U.S. patent application number 15/029970 was filed with the patent office on 2016-08-18 for hindered amine light stabilizers.
This patent application is currently assigned to BASF SE. The applicant listed for this patent is BASF SE. Invention is credited to Bjoern LUDOLPH, Bruno ROTZINGER, Cornelia SCHLETH, Liane SCHULZ, Manuele VITALI.
Application Number | 20160237063 15/029970 |
Document ID | / |
Family ID | 49356340 |
Filed Date | 2016-08-18 |
United States Patent
Application |
20160237063 |
Kind Code |
A1 |
SCHLETH; Cornelia ; et
al. |
August 18, 2016 |
HINDERED AMINE LIGHT STABILIZERS
Abstract
A compound of the formula (I), wherein R.sub.1 and R.sub.2
independently of one another are hydrogen, C.sub.1-C.sub.22alkyl,
--O., --OH, --CH.sub.2CN, C.sub.1-C.sub.18alkoxy,
C.sub.2-C.sub.18alkoxy substituted by --OH;
C.sub.5-C.sub.12cycloalkoxy, C.sub.3-C.sub.6alkenyl,
C.sub.3-C.sub.6alkenyloxy, C.sub.7-C.sub.9phenylalkyl unsubstituted
or substituted on the phenyl by 1, 2 or 3 C.sub.1-C.sub.4alkyl; or
C.sub.1-C.sub.8acyl; and R.sub.3 and R.sub.4 independently of one
another are C.sub.1-C.sub.22alkyl or a group of the formula (1a),
wherein R.sub.0 has one of the meanings of R.sub.1 and R.sub.2.
##STR00001##
Inventors: |
SCHLETH; Cornelia;
(Grenzach-Wyhlen, DE) ; SCHULZ; Liane; (Freiburg i
Br., DE) ; ROTZINGER; Bruno; (Delemont, CH) ;
LUDOLPH; Bjoern; (Ludwigshafen, DE) ; VITALI;
Manuele; (Bologna, IT) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
BASF SE |
Ludwigshafen |
|
DE |
|
|
Assignee: |
BASF SE
Ludwigshafen
DE
|
Family ID: |
49356340 |
Appl. No.: |
15/029970 |
Filed: |
October 13, 2014 |
PCT Filed: |
October 13, 2014 |
PCT NO: |
PCT/EP2014/071854 |
371 Date: |
April 15, 2016 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
C08K 3/013 20180101;
C08K 3/04 20130101; C08K 5/34926 20130101; C08K 5/005 20130101;
C08K 5/134 20130101; C08K 13/02 20130101; C08K 5/34926 20130101;
C08K 5/132 20130101; C08K 3/346 20130101; C08K 3/22 20130101; C07D
401/14 20130101; C08K 3/22 20130101; C08K 5/3492 20130101; C08K
5/524 20130101; C08K 3/346 20130101; C08K 13/02 20130101; C08K 3/04
20130101; C08L 23/12 20130101; C08L 23/12 20130101; C08L 23/12
20130101; C08L 23/12 20130101; C08L 23/12 20130101 |
International
Class: |
C07D 401/14 20060101
C07D401/14; C08K 5/132 20060101 C08K005/132; C08K 5/3475 20060101
C08K005/3475; C08K 5/524 20060101 C08K005/524; C08K 3/00 20060101
C08K003/00; C08K 3/04 20060101 C08K003/04; C08K 3/22 20060101
C08K003/22; C08K 3/34 20060101 C08K003/34; C08K 13/02 20060101
C08K013/02; C08K 5/00 20060101 C08K005/00; C08K 5/3492 20060101
C08K005/3492; C08K 5/134 20060101 C08K005/134 |
Foreign Application Data
Date |
Code |
Application Number |
Oct 17, 2013 |
EP |
13189048.5 |
Claims
1: A compound of formula (I) ##STR00009## wherein R.sub.1 and
R.sub.2 independently of one another are hydrogen,
C.sub.1-C.sub.22alkyl, --O., --OH, --CH.sub.2CN,
C.sub.1-C.sub.18alkoxy, C.sub.2-C.sub.18alkoxy substituted by --OH,
C.sub.5-C.sub.12cycloalkoxy, C.sub.3-C.sub.6alkenyl,
C.sub.3-C.sub.6alkenyloxy, C.sub.7-C.sub.9phenylalkyl unsubstituted
or substituted on the phenyl by 1, 2 or 3 C.sub.1-C.sub.4alkyl; or
C.sub.1-C.sub.8acyl; and R.sub.3 and R.sub.4 independently of one
another are C.sub.1-C.sub.22alkyl or a group of formula (Ia)
##STR00010## wherein R.sub.0 has one of the meanings of R.sub.1 and
R.sub.2.
2: The compound according to claim 1, wherein R.sub.1 and R.sub.2
independently of one another are hydrogen, C.sub.1-C.sub.8alkyl,
C.sub.1-C.sub.18alkoxy or cyclohexyloxy; and R.sub.3 and R.sub.4
independently of one another are C.sub.1-C.sub.6alkyl.
3: The compound according to claim 1, wherein the compound of the
formula (I) is the compound (A) ##STR00011##
4: A composition comprising: an organic material susceptible to
degradation induced by light, heat or oxidation, and the compound
according to claim 1.
5: The composition according to claim 4, wherein the organic
material is a thermoplastic polymer.
6: The composition according to claim 4, wherein the organic
material is a polyolefin, an acrylonitrile/butadiene/styrene, a
polyvinyl chloride, a polymethylmethacrylate, a polyamide or a
polyoxymethylene.
7: The composition according to claim 4, wherein the organic
material is a thermoplastic polyolefin.
8: The composition according to claim 4, wherein the organic
material is a thermoplastic polyethylene or polypropylene.
9: The composition according to claim 4, further comprising a
phenolic antioxidant and/or a phenolic phosphite.
10: The composition according to claim 9, wherein the phenolic
antioxidant is pentaerythritol
tetrakis[3,5-di-tert-butyl-4-hydroxyphenylpropionate],
octadecyl-3-(3,5-di-tert-butyl-4-hydroxyphenyl)proprionate,
1,3,5-tris(3,5-di-tert-butyl-4-hydroxybenzyl)-2,4,6-trimethylbenzene,
N,N'-bis(3,5-di-tert-butyl-4-hydroxyphenylpropionyl)hexamethylene-diamide
or 1,3,5-tris[3,5-di-tert-butyl-4-hydroxybenzyl]isocyanurate,
2,4-di-t-butylphenyl-3,5-di-t-butyl-4-hydroxybenzoate or
bis(1,2,2,6,6-pentamethylpiperidin-4-yl)-butyl(3,5-di-t-butyl-4-hydroxybe-
nzyl)malonate), and the phenolic phosphite is
tris[2,4-di-tert-butylphenyl]phosphite.
11: The composition according to claim 4, further comprising: a
sterically hindered amine light stabilizer different from the
compound of the formula (I), and/or an UV-absorber.
12: The composition according to claim 11, wherein the UV-absorber
is present and is selected from the group consisting of a
2-(2'-hydroxyphenyl)benzotriazole, a 2-hydroxybenzophenone, an
oxamide and a 2-(2-hydroxyphenyl)-1,3,5-triazine.
13: The composition according to which claim 4, further comprising
a filler and/or a pigment.
14: An automotive interior or exterior trim material comprising the
composition according to claim 4.
15: The automotive interior or exterior trim material according to
claim 14, which is a facing material for a roof, seat or
dashboard.
16: An agricultural article comprising the composition according to
claim 4.
17: The agricultural article according to claim 16, which is a
greenhouse cover.
18: A method for stabilizing an organic material against
degradation induced by light, heat or oxidation, comprising
incorporating into said organic material at least one compound of
claim 1.
19: A method for preparing a compound of claim 1, comprising
reacting a compound of formula (II) ##STR00012## with pyrrolidine
in an organic solvent, optionally in the presence of an organic or
inorganic base.
Description
[0001] The present invention relates to sterically hindered amine
compounds, an organic material stabilized with the sterically
hindered amine compounds against degradation induced by light, heat
or oxidation, the use of the sterically hindered amine compounds as
stabilizers and a method for the preparation of the sterically
hindered amine compounds.
[0002] Sterically hindered amine compounds are for example
described in EP-A-107615, EP-A-227640, EP-A-357223, U.S. Pat. No.
5,244,948 and U.S. Pat. No. 5,268,401.
[0003] The present invention relates in particular to a compound of
the formula (I)
##STR00002##
wherein R.sub.1 and R.sub.2 independently of one another are
hydrogen, C.sub.1-C.sub.22alkyl, --O., --OH, --CH.sub.2CN,
C.sub.1-C.sub.18alkoxy, C.sub.2-C.sub.18alkoxy substituted by --OH;
C.sub.5-C.sub.12cycloalkoxy, C.sub.3-C.sub.6alkenyl,
C.sub.3-C.sub.6alkenyloxy, C.sub.7-C.sub.9phenylalkyl unsubstituted
or substituted on the phenyl by 1, 2 or 3 C.sub.1-C.sub.4alkyl; or
C.sub.1-C.sub.8acyl; and R.sub.3 and R.sub.4 independently of one
another are C.sub.1-C.sub.22alkyl or a group of the formula
(Ia)
##STR00003##
wherein R.sub.0 has one of the meanings of R.sub.1 and R.sub.2.
[0004] Examples of alkyl having up to 22 carbon atoms are methyl,
ethyl, propyl, isopropyl, n-butyl, sec-butyl, isobutyl, tert-butyl,
2-ethylbutyl, n-pentyl, isopentyl, 1-methylpentyl,
1,3-dimethylbutyl, n-hexyl, 1-methylhexyl, n-heptyl, isoheptyl,
1,1,3,3-tetramethylbutyl, 1-methylheptyl, 3-methylheptyl, n-octyl,
2-ethylhexyl, 1,1,3-trimethylhexyl, 1,1,3,3-tetramethylpentyl,
nonyl, decyl, undecyl, 1-methylundecyl, dodecyl,
1,1,3,3,5,5-hexamethylhexyl, tridecyl, tetradecyl, pentadecyl,
hexadecyl, heptadecyl, octadecyl and eicosyl. One preferred meaning
is C.sub.1-C.sub.4alkyl. R.sub.1 and R.sub.2 are preferably methyl
and R.sub.3 and R.sub.4 are preferably n-butyl.
[0005] Examples of alkoxy having up to 18 carbon atoms are methoxy,
ethoxy, propoxy, isopropoxy, butoxy, isobutoxy, pentoxy,
isopentoxy, hexoxy, heptoxy, octoxy, decyloxy, dodecyloxy,
tetradecyloxy, hexadecyloxy and octadecyloxy. Preferred meanings of
R.sub.0, R.sub.1 and R.sub.2 are methoxy, ethoxy, propoxy, octoxy
or undecyloxy.
[0006] Examples of C.sub.3-C.sub.6alkenyloxy are 1-propenyloxy and
2-propenyloxy.
[0007] An examples of C.sub.2-C.sub.18alkoxy substituted by --OH is
2-hydroxyethyl.
[0008] Examples of C.sub.5-C.sub.12cycloalkoxy are cyclopentoxy,
cyclohexoxy, cycloheptoxy, cyclooctoxy, cyclodecyloxy and
cyclododecyloxy. C.sub.5-C.sub.8Cycloalkoxy, in particular
cyclopentoxy and cyclohexoxy, is preferred.
[0009] Examples of C.sub.7-C.sub.9phenylalkyl are benzyl and
2-phenylethyl.
[0010] C.sub.7-C.sub.9Phenylalkyl which is substituted on the
phenyl radical by 1, 2 or 3 C.sub.1-C.sub.4alkyl is for example
methylbenzyl, dimethylbenzyl, trimethylbenzyl or
tert-butylbenzyl.
[0011] Examples of C.sub.3-C.sub.6alkenyl are allyl, 2-methallyl,
butenyl, pentenyl and hexenyl. Allyl is preferred. The carbon atom
in position 1 is preferably saturated.
[0012] Examples of C.sub.1-C.sub.8acyl are formyl, acetyl,
propionyl, butyryl, pentanoyl, hexanoyl, heptanoyl, octanoyl,
acryloyl, methacryloyl and benzoyl. C.sub.1-C.sub.8Alkanoyl,
C.sub.3-C.sub.8alkenoyl and benzoyl are preferred. Acetyl and
acryloyl are especially preferred.
[0013] A compound of the formula (I) wherein R.sub.1 and R.sub.2
independently of one another are hydrogen, C.sub.1-C.sub.8alkyl,
C.sub.1-C.sub.18alkoxy or cyclohexyloxy and R.sub.3 and R.sub.4
independently of one another are C.sub.1-C.sub.6alkyl is
preferred.
[0014] The compound of the formula (I) is preferably a compound of
the formula (A).
##STR00004##
[0015] The compounds of the formula (I) can be prepared in analogy
to known methods, for example by reacting a compound of the formula
(II)
##STR00005##
with pyrrolidine in an organic solvent, optionally in the presence
of an organic or inorganic base.
[0016] According to a preferred embodiment the compound of the
formula (II) is reacted with e.g. 0.8 to 5 equivalent of
pyrrolidine in an organic solvent, for example toluene, xylene,
chlorobenzene, nitrobenzene, mesitylene, ethylbenzene, an alcohol
such as methanol, ethanol, n-propanol, i-propanol, n-butanol,
t-butanol; N-methyl-2-pyrrolidone, dimethylformamide, 1,4-dioxane,
an ester or pyrrolidine; with or without water, in the presence of
e.g. 0 to 10 equivalent of an alkali metal hydroxide such as LiOH,
NaOH, KOH; a carbonate or hydrogen carbonate such as NaHCO.sub.3,
Na.sub.2CO.sub.3, K.sub.2CO.sub.3; a solid base, a zeolite, an
ion-exchange resin, an amine based base or an organic base. The
concentration of the compound of the formula (II) in the organic
solvent is preferably 0.1-3 molar. The reaction can be carried out
e.g. under atmospheric pressure or an elevated pressure up to 60
bar. The used temperatures vary between e.g. 30.degree. C. and
180.degree. C. in dependence on the reaction time of e.g. 2 h to 24
h.
[0017] The starting materials of the formula (II) can be prepared
in analogy to known methods, e.g. as described in U.S. Pat. No.
5,268,401.
[0018] A further embodiment of the present invention is a
composition containing an organic material susceptible to
degradation induced by light, heat or oxidation and a compound of
the formula (I).
[0019] Examples of organic materials which can be stabilized
are:
1. Polymers of monoolefins and diolefins, for example
polypropylene, polyisobutylene, polybut-1-ene,
poly-4-methylpent-1-ene, polyvinylcyclohexane, polyisoprene or
polybutadiene, as well as polymers of cycloolefins, for instance of
cyclopentene or norbornene, polyethylene (which optionally can be
crosslinked), for example high density polyethylene (HDPE), high
density and high molecular weight polyethylene (HDPEHMW), high
density and ultrahigh molecular weight polyethylene (HDPE-UHMW),
medium density polyethylene (MDPE), low density polyethylene
(LDPE), linear low density polyethylene (LLDPE), (VLDPE) and
(ULDPE).
[0020] Polyolefins, i.e. the polymers of monoolefins exemplified in
the preceding paragraph, preferably polyethylene and polypropylene,
can be prepared by different, and especially by the following,
methods: [0021] a) radical polymerisation (normally under high
pressure and at elevated temperature). [0022] b) catalytic
polymerisation using a catalyst that normally contains one or more
than one metal of groups IVb, Vb, VIb or VIII of the Periodic
Table. These metals usually have one or more than one ligand,
typically oxides, halides, alcoholates, esters, ethers, amines,
alkyls, alkenyls and/or aryls that may be either .pi.- or
.sigma.-coordinated. These metal complexes may be in the free form
or fixed on substrates, typically on activated magnesium chloride,
titanium(III) chloride, alumina or silicon oxide. These catalysts
may be soluble or insoluble in the polymerisation medium. The
catalysts can be used by themselves in the polymerisation or
further activators may be used, typically metal alkyls, metal
hydrides, metal alkyl halides, metal alkyl oxides or metal
alkyloxanes, said metals being elements of groups Ia, IIa and/or
IIIa of the Periodic Table. The activators may be modified
conveniently with further ester, ether, amine or silyl ether
groups. These catalyst systems are usually termed Phillips,
Standard Oil Indiana, Ziegler (-Natta), TNZ (DuPont), metallocene
or single site catalysts (SSC). 2. Mixtures of the polymers
mentioned under 1), for example mixtures of polypropylene with
polyisobutylene, polypropylene with polyethylene (for example
PP/HDPE, PP/LDPE) and mixtures of different types of polyethylene
(for example LDPE/HDPE). 3. Copolymers of monoolefins and diolefins
with each other or with other vinyl monomers, for example
ethylene/propylene copolymers, linear low density polyethylene
(LLDPE) and mixtures thereof with low density polyethylene (LDPE),
propylene/but-1-ene copolymers, propylene/isobutylene copolymers,
ethylene/but-1-ene copolymers, ethylene/hexene copolymers,
ethylene/methylpentene copolymers, ethylene/heptene copolymers,
ethylene/octene copolymers, ethylene/vinylcyclohexane copolymers,
ethylene/cycloolefin copolymers (e.g. ethylene/norbornene like
COC), ethylene/1-olefins copolymers, where the 1-olefin is
generated in-situ; propylene/butadiene copolymers,
isobutylene/isoprene copolymers, ethylene/vinylcyclohexene
copolymers, ethylene/alkyl acrylate copolymers, ethylene/alkyl
methacrylate copolymers, ethylene/vinyl acetate copolymers or
ethylene/acrylic acid copolymers and their salts (ionomers) as well
as terpolymers of ethylene with propylene and a diene such as
hexadiene, dicyclopentadiene or ethylidene-norbornene; and mixtures
of such copolymers with one another and with polymers mentioned in
1) above, for example polypropylene/ethylenepropylene copolymers,
LDPE/ethylene-vinyl acetate copolymers (EVA), LDPE/ethylene-acrylic
acid copolymers (EAA), LLDPE/EVA, LLDPE/EAA and alternating or
random polyalkylene/carbon monoxide copolymers and mixtures thereof
with other polymers, for example polyamides. 4. Hydrocarbon resins
(for example C.sub.5-C.sub.9) including hydrogenated modifications
thereof (e.g. tackifiers) and mixtures of polyalkylenes and
starch.
[0023] Homopolymers and copolymers from 1.)-4.) may have any
stereostructure including syndiotactic, isotactic, hemi-isotactic
or atactic; where atactic polymers are preferred. Stereoblock
polymers are also included.
5. Polystyrene, poly(p-methylstyrene), poly(.alpha.-methylstyrene).
6. Aromatic homopolymers and copolymers derived from vinyl aromatic
monomers including styrene, .alpha.-methylstyrene, all isomers of
vinyl toluene, especially p-vinyltoluene, all isomers of ethyl
styrene, propyl styrene, vinyl biphenyl, vinyl naphthalene, and
vinyl anthracene, and mixtures thereof. Homopolymers and copolymers
may have any stereostructure including syndiotactic, isotactic,
hemi-isotactic or atactic; where atactic polymers are preferred.
Stereoblock polymers are also included. 6a. Copolymers including
aforementioned vinyl aromatic monomers and comonomers selected from
ethylene, propylene, dienes, nitriles, acids, maleic anhydrides,
maleimides, vinyl acetate and vinyl chloride or acrylic derivatives
and mixtures thereof, for example styrene/butadiene,
styrene/acrylonitrile, styrene/ethylene (interpolymers),
styrene/alkyl methacrylate, styrene/butadiene/alkyl acrylate,
styrene/butadiene/alkyl methacrylate, styrene/maleic anhydride,
styrene/acrylonitrile/methyl acrylate; mixtures of high impact
strength of styrene copolymers and another polymer, for example a
polyacrylate, a diene polymer or an ethylene/propylene/diene
terpolymer; and block copolymers of styrene such as
styrene/butadiene/styrene, styrene/isoprene/styrene,
styrene/ethylene/butylene/styrene or
styrene/ethylene/propylene/styrene. 6b. Hydrogenated aromatic
polymers derived from hydrogenation of polymers mentioned under
6.), especially including polycyclohexylethylene (PCHE) prepared by
hydrogenating atactic polystyrene, often referred to as
polyvinylcyclohexane (PVCH). 6c. Hydrogenated aromatic polymers
derived from hydrogenation of polymers mentioned under 6a.).
[0024] Homopolymers and copolymers may have any stereostructure
including syndiotactic, isotactic, hemi-isotactic or atactic; where
atactic polymers are preferred. Stereoblock polymers are also
included.
7. Graft copolymers of vinyl aromatic monomers such as styrene or
.alpha.-methylstyrene, for example styrene on polybutadiene,
styrene on polybutadiene-styrene or polybutadiene-acrylonitrile
copolymers; styrene and acrylonitrile (or methacrylonitrile) on
polybutadiene; styrene, acrylonitrile and methyl methacrylate on
polybutadiene; styrene and maleic anhydride on polybutadiene;
styrene, acrylonitrile and maleic anhydride or maleimide on
polybutadiene; styrene and maleimide on polybutadiene; styrene and
alkyl acrylates or methacrylates on polybutadiene; styrene and
acrylonitrile on ethylene/propylene/diene terpolymers; styrene and
acrylonitrile on polyalkyl acrylates or polyalkyl methacrylates,
styrene and acrylonitrile on acrylate/butadiene copolymers, as well
as mixtures thereof with the copolymers listed under 6), for
example the copolymer mixtures known as ABS, MBS, ASA or AES
polymers. 8. Halogen-containing polymers such as polychloroprene,
chlorinated rubbers, chlorinated and brominated copolymer of
isobutylene-isoprene (halobutyl rubber), chlorinated or
sulfochlorinated polyethylene, copolymers of ethylene and
chlorinated ethylene, epichlorohydrin homo- and copolymers,
especially polymers of halogen-containing vinyl compounds, for
example polyvinyl chloride, polyvinylidene chloride, polyvinyl
fluoride, polyvinylidene fluoride, as well as copolymers thereof
such as vinyl chloride/vinylidene chloride, vinyl chloride/vinyl
acetate or vinylidene chloride/vinyl acetate copolymers. 9.
Polymers derived from .alpha.,.beta.-unsaturated acids and
derivatives thereof such as polyacrylates and polymethacrylates;
polymethyl methacrylates, polyacrylamides and polyacrylonitriles,
impact-modified with butyl acrylate. 10. Copolymers of the monomers
mentioned under 9) with each other or with other unsaturated
monomers, for example acrylonitrile/butadiene copolymers,
acrylonitrile/alkyl acrylate copolymers, acrylonitrile/alkoxyalkyl
acrylate or acrylonitrile/vinyl halide copolymers or
acrylonitrile/alkyl methacrylate/butadiene terpolymers. 11.
Polymers derived from unsaturated alcohols and amines or the acyl
derivatives or acetals thereof, for example polyvinyl alcohol,
polyvinyl acetate, polyvinyl stearate, polyvinyl benzoate,
polyvinyl maleate, polyvinyl butyral, polyallyl phthalate or
polyallyl melamine; as well as their copolymers with olefins
mentioned in 1) above. 12. Homopolymers and copolymers of cyclic
ethers such as polyalkylene glycols, polyethylene oxide,
polypropylene oxide or copolymers thereof with bisglycidyl ethers.
13. Polyacetals such as polyoxymethylene and those
polyoxymethylenes which contain ethylene oxide as a comonomer;
polyacetals modified with thermoplastic polyurethanes, acrylates or
MBS. 14. Polyphenylene oxides and sulfides, and mixtures of
polyphenylene oxides with styrene polymers or polyamides. 15.
Polyurethanes derived from hydroxyl-terminated polyethers,
polyesters or polybutadienes on the one hand and aliphatic or
aromatic polyisocyanates on the other, as well as precursors
thereof. 16. Polyamides and copolyamides derived from diamines and
dicarboxylic acids and/or from aminocarboxylic acids or the
corresponding lactams, for example polyamide 4, polyamide 6,
polyamide 6/6, 6/10, 6/9, 6/12, 4/6, 12/12, polyamide 11, polyamide
12, aromatic polyamides starting from m-xylene diamine and adipic
acid; polyamides prepared from hexamethylenediamine and isophthalic
or/and terephthalic acid and with or without an elastomer as
modifier, for example poly-2,4,4,-trimethylhexamethylene
terephthalamide or poly-m-phenylene isophthalamide; and also block
copolymers of the aforementioned polyamides with polyolefins,
olefin copolymers, ionomers or chemically bonded or grafted
elastomers; or with polyethers, e.g. with polyethylene glycol,
polypropylene glycol or polytetramethylene glycol; as well as
polyamides or copolyamides modified with EPDM or ABS; and
polyamides condensed during processing (RIM polyamide systems). 17.
Polyureas, polyimides, polyamide-imides, polyetherimides,
polyesterimides, polyhydantoins and polybenzimidazoles. 18.
Polyesters derived from dicarboxylic acids and diols and/or from
hydroxycarboxylic acids or the corresponding lactones or lactides,
for example polyethylene terephthalate, polybutylene terephthalate,
poly-1,4-dimethylolcyclohexane terephthalate, polyalkylene
naphthalate and polyhydroxybenzoates as well as copolyether esters
derived from hydroxyl-terminated polyethers, and also polyesters
modified with polycarbonates or MBS. Copolyesters may comprise, for
example--but are not limited
to--polybutylenesuccinate/terephtalate,
polybutyleneadipate/terephthalate,
polytetramethyleneadipate/terephthalate,
polybutylensuccinate/adipate, polybutylensuccinate/carbonate,
poly-3-hydroxybutyrate/octanoate copolymer,
poly-3-hydroxybutyrate/hexanoate/decanoate terpolymer. Furthermore,
aliphatic polyesters may comprise, for example--but are not limited
to--the class of poly(hydroxyalkanoates), in particular,
poly(propiolactone), poly(butyrolactone), poly(pivalolactone),
poly(valerolactone) and poly(caprolactone), polyethylenesuccinate,
polypropylenesuccinate, polybutylenesuccinate,
polyhexamethylenesuccinate, polyethyleneadipate,
polypropyleneadipate, polybutyleneadipate,
polyhexamethyleneadipate, polyethyleneoxalate,
polypropyleneoxalate, polybutyleneoxalate,
polyhexamethyleneoxalate, polyethylenesebacate,
polypropylenesebacate, polybutylenesebacate and polylactic acid
(PLA) as well as corresponding polyesters modified with
polycarbonates or MBS. The term "polylactic acid (PLA)" designates
a homo-polymer of preferably poly-L-lactide and any of its blends
or alloys with other polymers; a co-polymer of lactic acid or
lactide with other monomers, such as hydroxy-carboxylic acids, like
for example glycolic acid, 3-hydroxy-butyric acid,
4-hydroxy-butyric acid, 4-hydroxy-valeric acid, 5-hydroxy-valeric
acid, 6-hydroxy-caproic acid and cyclic forms thereof; the terms
"lactic acid" or "lactide" include L-lactic acid, D-lactic acid,
mixtures and dimers thereof, i.e. L-lactide, D-lactide, meso-lacide
and any mixtures thereof. 19. Polycarbonates and polyester
carbonates.
20. Polyketones.
[0025] 21. Polysulfones, polyether sulfones and polyether ketones.
22. Crosslinked polymers derived from aldehydes on the one hand and
phenols, ureas and melamines on the other hand, such as
phenol/formaldehyde resins, urea/formaldehyde resins and
melamine/formaldehyde resins. 23. Drying and non-drying alkyd
resins. 24. Unsaturated polyester resins derived from copolyesters
of saturated and unsaturated dicarboxylic acids with polyhydric
alcohols and vinyl compounds as crosslinking agents, and also
halogen-containing modifications thereof of low flammability. 25.
Crosslinkable acrylic resins derived from substituted acrylates,
for example epoxy acrylates, urethane acrylates or polyester
acrylates. 26. Alkyd resins, polyester resins and acrylate resins
crosslinked with melamine resins, urea resins, isocyanates,
isocyanurates, polyisocyanates or epoxy resins. 27. Crosslinked
epoxy resins derived from aliphatic, cycloaliphatic, heterocyclic
or aromatic glycidyl compounds, e.g. products of diglycidyl ethers
of bisphenol A and bisphenol F, which are crosslinked with
customary hardeners such as anhydrides or amines, with or without
accelerators. 28. Natural polymers such as cellulose, rubber,
gelatin and chemically modified homologous derivatives thereof, for
example cellulose acetates, cellulose propionates and cellulose
butyrates, or the cellulose ethers such as methyl cellulose; as
well as rosins and their derivatives. 29. Blends of the
aforementioned polymers (polyblends), for example PP/EPDM,
Polyamide/EPDM or ABS, PVC/EVA, PVC/ABS, PVC/MBS, PC/ABS, PBTP/ABS,
PC/ASA, PC/PBT, PVC/CPE, PVC/acrylates, POM/thermoplastic PUR,
PC/thermoplastic PUR, POM/acrylate, POM/MBS, PPO/HIPS, PPO/PA 6.6
and copolymers, PA/HDPE, PA/PP, PA/PPO, PBT/PC/ABS or PBT/PET/PC.
30. Naturally occurring and synthetic organic materials which are
pure monomeric compounds or mixtures of such compounds, for example
mineral oils, animal and vegetable fats, oil and waxes, or oils,
fats and waxes based on synthetic esters (e.g. phthalates,
adipates, phosphates or trimellitates) and also mixtures of
synthetic esters with mineral oils in any weight ratios, typically
those used as spinning compositions, as well as aqueous emulsions
of such materials. 31. Aqueous emulsions of natural or synthetic
rubber, e.g. natural latex or lattices of carboxylated
styrene/butadiene copolymers.
[0026] A polyolefin, an acrylonitrile/butadiene/styrene, a
polyvinyl chloride, a polymethylmethacrylate, a polyamide or a
polyoxymethylene are of special interest.
[0027] According to a preferred embodiment the organic material is
a thermoplastic elastomer.
[0028] Examples of thermoplastic elastomers include polyolefin
thermoplastic elastomers and block copolymer-type polystyrene
thermoplastic elastomers. The polyolefin thermoplastic elastomers
comprise polyolefin resins such as polypropylene and polyethylene
serving as hard segments and rubber compositions such as
ethylene-propylene-diene-elastomer (EPDM) serving as soft segments.
The block copolymer-type polystyrene thermoplastic elastomer
comprises polystyrene serving as hard segments and polydienes such
as polybutadiene or polyisoprene serving as soft segments.
[0029] Alternatively, a blend of the polyolefin elastomers and the
polystyrene elastomers may also be used as the thermoplastic
elastomer of the present invention. The methods for combining soft
segments and hard segments in thermoplastic elastomers may be
roughly divided into simple blending, implantation by
copolymerization, and dynamic cross-linking. Combinations of
segments of polystyrene thermoplastic elastomers include a
styrene-butadiene-styrene block copolymer (SBS), a
styrene-isoprene-styrene block copolymer (SIS), a styrene-ethylene
butylene-styrene block copolymer (SEBS), a styrene-ethylene
propylene-styrene block copolymer (SEPS), a hydrogenated polymer of
any one of the four copolymers, a hydrogenated polymer of random
SBR (HSBR), and a blend of polypropylene and one or more arbitrary
members selected from among these polymers. (SBR=styrene butadiene
rubber)
[0030] Of interest is a thermoplastic polyolefin, in particular
polyethylene or polypropylene containing a rubber phase based on
ethylene and/or propylene.
[0031] The compounds of the formula (I) can be used in various
proportions depending on the nature of the organic material to be
stabilized, on the end use and on the presence of other
additives.
[0032] In general, it is appropriate to use, for example, 0.01 to
5% by weight of a compound of the formula (I), relative to the
weight of the organic material, preferably 0.05 to 2%, in
particular 0.05 to 1%.
[0033] The compounds of the formula (I) can be added, for example,
to polymeric materials before, during or after the polymerization
or crosslinking of the said materials. Furthermore, they can be
incorporated in the polymeric materials in the pure form or
encapsulated in waxes, oils or polymers.
[0034] In general, the compounds of the formula (I) can be
incorporated in the organic materials by various processes, such as
dry mixing in the form of powder, or wet mixing in the form of
solutions or suspensions or also in the form of a masterbatch which
contains the compounds of the formula (I) in a concentration of 2.5
to 25% by weight; in such operations, the polymer can be used in
the form of powder, granules, solutions, suspensions or in the form
of lattices.
[0035] Examples of processing of the compositions according to the
present invention are: Injection blow molding, extrusion, blow
molding, rotomolding, in mold decoration (back injection), slush
molding, injection molding, co-injection molding, forming,
compression molding, pressing, film extrusion (cast film; blown
film), fiber spinning (woven, nonwoven), drawing (uniaxial,
biaxial), annealing, deep drawing, calandering, mechanical
transformation, sintering, coextrusion, coating, lamination,
crosslinking (radiation, peroxide, silane), vapor deposition, weld
together, glue, vulcanization, thermoforming, pipe extrusion,
profile extrusion, sheet extrusion; sheet casting, spin coating,
strapping, foaming, recycling/rework, extrusion coating,
visbreaking (peroxide, thermal), fiber melt blown, spun bonded,
surface treatment (corona discharge, flame, plasma), sterilization
(by gamma rays, electron beams), gel-coating, tape extrusion,
SMC-process or plastisol.
[0036] The compositions according to the present invention can be
advantageously used for the preparation of various shaped articles.
Examples are:
I-1) Floating devices, marine applications, pontoons, buoys,
plastic lumber for decks, piers, boats, kayaks, oars, and beach
reinforcements. I-2) Automotive applications, in particular
bumpers, dashboards, battery, rear and front linings, moldings
parts under the hood, hat shelf, trunk linings, interior linings,
air bag covers, electronic moldings for fittings (lights), panes
for dashboards, headlamp glass, instrument panel, exterior linings,
upholstery, automotive lights, head lights, parking lights, rear
lights, stop lights, interior and exterior trims; door panels; gas
tank; glazing front side; rear windows; seat backing, exterior
panels, wire insulation, profile extrusion for sealing, cladding,
pillar covers, chassis parts, exhaust systems, fuel filter/filler,
fuel pumps, fuel tank, body side mouldings, convertible tops,
exterior mirrors, exterior trim, fasteners/fixings, front end
module, glass, hinges, lock systems, luggage/roof racks,
pressed/stamped parts, seals, side impact protection, sound
deadener/insulator and sunroof. I-3) Road traffic devices, in
particular sign postings, posts for road marking, car accessories,
warning triangles, medical cases, helmets, tires. I-4) Devices for
plane, railway, motor car (car, motorbike) including furnishings.
I-5) Devices for space applications, in particular rockets and
satellites, e.g. reentry shields. I-6) Devices for architecture and
design, mining applications, acoustic quietized systems, street
refuges, and shelters. II-1) Appliances, cases and coverings in
general and electric/electronic devices (personal computer,
telephone, portable phone, printer, television-sets, audio and
video devices), flower pots, satellite TV bowl, and panel devices.
II-2) Jacketing for other materials such as steel or textiles.
II-3) Devices for the electronic industry, in particular insulation
for plugs, especially computer plugs, cases for electric and
electronic parts, printed boards, and materials for electronic data
storage such as chips, check cards or credit cards. II-4) Electric
appliances, in particular washing machines, tumblers, ovens
(microwave oven), dish-washers, mixers, and irons. II-5) Covers for
lights (e.g. street-lights, lamp-shades). II-6) Applications in
wire and cable (semi-conductor, insulation and cable-jacketing).
II-7) Foils for condensers, refrigerators, heating devices, air
conditioners, encapsulating of electronics, semi-conductors, coffee
machines, and vacuum cleaners. III-1) Technical articles such as
cogwheel (gear), slide fittings, spacers, screws, bolts, handles,
and knobs. III-2) Rotor blades, ventilators and windmill vanes,
solar devices, swimming pools, swimming pool covers, pool liners,
pond liners, closets, wardrobes, dividing walls, slat walls,
folding walls, roofs, shutters (e.g. roller shutters), fittings,
connections between pipes, sleeves, and conveyor belts. III-3)
Sanitary articles, in particular shower cubicles, lavatory seats,
covers, and sinks. III-4) Hygienic articles, in particular diapers
(babies, adult incontinence), feminine hygiene articles, shower
curtains, brushes, mats, tubs, mobile toilets, tooth brushes, and
bed pans. III-5) Pipes (cross-linked or not) for water, waste water
and chemicals, pipes for wire and cable protection, pipes for gas,
oil and sewage, guttering, down pipes, and drainage systems. III-6)
Profiles of any geometry (window panes) and siding. III-7) Glass
substitutes, in particular extruded plates, glazing for buildings
(monolithic, twin or multiwall), aircraft, schools, extruded
sheets, window film for architectural glazing, train,
transportation and sanitary articles. III-8) Plates (walls, cutting
board), extrusion-coating (photographic paper, tetrapack and pipe
coating), silos, wood substitute, plastic lumber, wood composites,
walls, surfaces, furniture, decorative foil, floor coverings
(interior and exterior applications), flooring, duck boards, and
tiles. III-9) Intake and outlet manifolds. III-10) Cement-,
concrete-, composite-applications and covers, siding and cladding,
hand rails, banisters, kitchen work tops, roofing, roofing sheets,
tiles, and tarpaulins. IV-1) Plates (walls and cutting board),
trays, artificial grass, astroturf, artificial covering for stadium
rings (athletics), artificial floor for stadium rings (athletics),
and tapes. IV-2) Woven fabrics continuous and staple, fibers
(carpets/hygienic articles/geotextiles/monofilaments; filters;
wipes/curtains (shades)/medical applications), bulk fibers
(applications such as gown/protection clothes), nets, ropes,
cables, strings, cords, threads, safety seat-belts, clothes,
underwear, gloves; boots; rubber boots, intimate apparel, garments,
swimwear, sportswear, umbrellas (parasol, sunshade), parachutes,
paraglides, sails, "balloon-silk", camping articles, tents,
airbeds, sun beds, bulk bags, and bags. IV-3) Membranes,
insulation, covers and seals for roofs, tunnels, dumps, ponds,
dumps, walls roofing membranes, geomembranes, swimming pools,
curtains (shades)/sun-shields, awnings, canopies, wallpaper, food
packing and wrapping (flexible and solid), medical packaging
(flexible & solid), airbags/safety belts, arm- and head rests,
carpets, centre console, dashboard, cockpits, door, overhead
console module, door trim, headliners, interior lighting, interior
mirrors, parcel shelf, rear luggage cover, seats, steering column,
steering wheel, textiles, and trunk trim. V-1) Films (packaging,
dump, laminating, bale wrap, swimming pools, waste bags, wallpaper,
stretch film, raffia, desalination film, batteries, and connectors.
V-2) Agricultural films (greenhouse covers, tunnel, mulch, silage,
bale wrap), especially in presence of intensive application of
agrochemicals. VI-1) Food packing and wrapping (flexible and
solid), BOPP, BOPET, bottles. VI-2) Storage systems such as boxes
(crates), luggage, chest, household boxes, pallets, shelves,
tracks, screw boxes, packs, and cans. VI-3) Cartridges, syringes,
medical applications, containers for any transportation, waste
baskets and waste bins, waste bags, bins, dust bins, bin liners,
wheely bins, container in general, tanks for water/used
water/chemistry/gas/oil/gasoline/diesel; tank liners, boxes,
crates, battery cases, troughs, medical devices such as piston,
ophthalmic applications, diagnostic devices, and packing for
pharmaceuticals blister. VII-1) Extrusion coating (photo paper,
tetrapack, pipe coating), household articles of any kind (e.g.
appliances, thermos bottle/clothes hanger), fastening systems such
as plugs, wire and cable clamps, zippers, closures, locks, and
snap-closures. VII-2) Support devices, articles for the leisure
time such as sports and fitness devices, gymnastics mats,
ski-boots, inline-skates, skis, big foot, athletic surfaces (e.g.
tennis grounds); screw tops, tops and stoppers for bottles, and
cans. VII-3) Furniture in general, foamed articles (cushions,
impact absorbers), foams, sponges, dish clothes, mats, garden
chairs, stadium seats, tables, couches, toys, building kits
(boards/figures/balls), playhouses, slides, and play vehicles.
VII-4) Materials for optical and magnetic data storage. VII-5)
Kitchen ware (eating, drinking, cooking, storing). VII-6) Boxes for
CD's, cassettes and video tapes; DVD electronic articles, office
supplies of any kind (ball-point pens, stamps and ink-pads, mouse,
shelves, tracks), bottles of any volume and content (drinks,
detergents, cosmetics including perfumes), and adhesive tapes.
VII-7) Footwear (shoes/shoe-soles), insoles, spats, adhesives,
structural adhesives, food boxes (fruit, vegetables, meat, fish),
synthetic paper, labels for bottles, couches, artificial joints
(human), printing plates (flexographic), printed circuit boards,
and display technologies. VII-8) Devices of filled polymers (talc,
chalk, china clay (kaolin), wollastonite, pigments, carbon black,
TiO.sub.2, mica, nanocomposites, dolomite, silicates, glass,
asbestos).
[0037] An automotive interior or exterior trim material made of a
composition according to the present invention is preferred.
Particularly preferred shaped articles are those listed above under
I-2. Of interest is also a facing material for a roof, seat or
dashboard.
[0038] If desired, one or more conventional additives for synthetic
polymers, such as antioxidants, UV absorbers, nickel stabilizers,
pigments, fillers, plasticizers, corrosion inhibitors and metal
deactivators, can be added to the organic materials containing the
compounds of the formula (I).
[0039] Examples of conventional additives are:
1. Antioxidants
[0040] 1.1. Alkylated monophenols, for example
2,6-di-tert-butyl-4-methylphenol, 2-tert-butyl-4,6-dimethylphenol,
2,6-di-tert-butyl-4-ethylphenol, 2,6-di-tert-butyl-4-n-butylphenol,
2,6-di-tert-butyl-4-isobutylphenol,
2,6-dicyclopentyl-4-methylphenol,
2-(.alpha.-methylcyclohexyl)-4,6-dimethylphenol,
2,6-dioctadecyl-4-methylphenol, 2,4,6-tricyclohexylphenol,
2,6-di-tert-butyl-4-methoxymethylphenol, nonylphenols which are
linear or branched in the side chains, for example,
2,6-di-nonyl-4-methylphenol,
2,4-dimethyl-6-(1'-methylundec-1'-yl)phenol,
2,4-dimethyl-6-(1'-methylheptadec-1'-yl)phenol,
2,4-dimethyl-6-(1'-methyltridec-1'-yl)phenol and mixtures thereof.
1.2. Alkylthiomethylphenols, for example
2,4-dioctylthiomethyl-6-tert-butylphenol,
2,4-dioctylthiomethyl-6-methylphenol,
2,4-dioctylthiomethyl-6-ethylphenol,
2,6-di-dodecylthiomethyl-4-nonylphenol. 1.3. Hydroquinones and
alkylated hydroquinones, for example
2,6-di-tert-butyl-4-methoxyphenol, 2,5-di-tert-butylhydroquinone,
2,5-di-tert-amylhydroquinone, 2,6-diphenyl-4-octadecyloxyphenol,
2,6-di-tert-butylhydroquinone, 2,5-di-tert-butyl-4-hydroxyanisole,
3,5-di-tert-butyl-4-hydroxyanisole,
3,5-di-tert-butyl-4-hydroxyphenyl stearate,
bis(3,5-di-tert-butyl-4-hydroxyphenyl) adipate. 1.4. Tocopherols,
for example .alpha.-tocopherol, .beta.-tocopherol,
.gamma.-tocopherol, .delta.-tocopherol and mixtures thereof
(vitamin E). 1.5. Hydroxylated thiodiphenyl ethers, for example
2,2'-thiobis(6-tert-butyl-4-methylphenol),
2,2'-thiobis(4-octylphenol),
4,4'-thiobis(6-tert-butyl-3-methylphenol),
4,4'-thiobis(6-tert-butyl-2-methylphenol),
4,4'-thiobis(3,6-di-sec-amylphenol),
4,4'-bis(2,6-dimethyl-4-hydroxyphenyl)disulfide. 1.6.
Alkylidenebisphenols, for example
2,2'-methylenebis(6-tert-butyl-4-methylphenol),
2,2'-methylenebis(6-tert-butyl-4-ethylphenol),
2,2'-methylenebis[4-methyl-6-(.alpha.-methylcyclohexyl)phenol],
2,2'-methylenebis(4-methyl-6-cyclohexylphenol),
2,2'-methylenebis(6-nonyl-4-methylphenol),
2,2'-methylenebis(4,6-di-tert-butylphenol),
2,2'-ethylidenebis(4,6-di-tert-butylphenol),
2,2'-ethylidenebis(6-tert-butyl-4-isobutylphenol),
2,2'-methylenebis[6-(.alpha.-methylbenzyl)-4-nonylphenol],
2,2'-methylenebis[6-(.alpha.,.alpha.-dimethylbenzyl)-4-nonylphenol],
4,4'-methylenebis(2,6-di-tert-butylphenol),
4,4'-methylenebis(6-tert-butyl-2-methylphenol),
1,1-bis(5-tert-butyl-4-hydroxy-2-methylphenyl)butane,
2,6-bis(3-tert-butyl-5-methyl-2-hydroxybenzyl)-4-methylphenol,
1,1,3-tris(5-tert-butyl-4-hydroxy-2-methylphenyl)butane,
1,1-bis(5-tert-butyl-4-hydroxy-2-methyl-phenyl)-3-n-dodecylmercaptobutane-
, ethylene glycol
bis[3,3-bis(3'-tert-butyl-4'-hydroxyphenyl)butyrate],
bis(3-tert-butyl-4-hydroxy-5-methyl-phenyl)dicyclopentadiene,
bis[2-(3'-tert-butyl-2'-hydroxy-5'-methylbenzyl)-6-tert-butyl-4-methylphe-
nyl]terephthalate, 1,1-bis-(3,5-dimethyl-2-hydroxyphenyl)butane,
2,2-bis(3,5-di-tert-butyl-4-hydroxyphenyl)propane,
2,2-bis(5-tert-butyl-4-hydroxy2-methylphenyl)-4-n-dodecylmercaptobutane,
1,1,5,5-tetra-(5-tert-butyl-4-hydroxy-2-methylphenyl)pentane. 1.7.
O-, N- and S-benzyl compounds, for example
3,5,3',5'-tetra-tert-butyl-4,4'-dihydroxydibenzyl ether,
octadecyl-4-hydroxy-3,5-dimethylbenzyl mercaptoacetate,
tridecyl-4-hydroxy-3,5-di-tert-butylbenzylmercaptoacetate,
tris(3,5-di-tert-butyl-4-hydroxybenzyl)amine,
bis(4-tert-butyl-3-hydroxy-2,6-dimethylbenzyl)dithioterephthalate,
bis(3,5-di-tert-butyl-4-hydroxybenzyl)sulfide,
isooctyl-3,5-di-tert-butyl-4-hydroxybenzylmercaptoacetate. 1.8.
Hydroxybenzylated malonates, for example
dioctadecyl-2,2-bis(3,5-di-tert-butyl-2-hydroxybenzyl)malonate,
di-octadecyl-2-(3-tert-butyl-4-hydroxy-5-methylbenzyl)malonate,
di-dodecylmercaptoethyl-2,2-bis(3,5-di-tert-butyl-4-hydroxybenzyl)malonat-
e,
bis[4-(1,1,3,3-tetramethylbutyl)phenyl]-2,2-bis(3,5-di-tert-butyl-4-hyd-
roxybenzyl)malonate. 1.9. Aromatic hydroxybenzyl compounds, for
example
1,3,5-tris(3,5-di-tert-butyl-4-hydroxybenzyl)-2,4,6-trimethylbenzene,
1,4-bis(3,5-di-tert-butyl-4-hydroxybenzyl)-2,3,5,6-tetramethylbenzene,
2,4,6-tris(3,5-di-tert-butyl-4-hydroxybenzyl)phenol. 1.10. Triazine
compounds, for example
2,4-bis(octylmercapto)-6-(3,5-di-tert-butyl-4-hydroxyanilino)-1,3,5-triaz-
ine,
2-octylmercapto-4,6-bis(3,5-di-tert-butyl-4-hydroxyanilino)-1,3,5-tri-
azine,
2-octylmercapto-4,6-bis(3,5-di-tert-butyl-4-hydroxyphenoxy)-1,3,5-t-
riazine,
2,4,6-tris(3,5-di-tert-butyl-4-hydroxyphenoxy)-1,2,3-triazine,
1,3,5-tris(3,5-di-tert-butyl-4-hydroxybenzyl)isocyanurate,
1,3,5-tris(4-tert-butyl-3-hydroxy-2,6-dimethylbenzyl)isocyanurate,
2,4,6-tris(3,5-di-tert-butyl-4-hydroxyphenylethyl)-1,3,5-triazine,
1,3,5-tris(3,5-di-tert-butyl-4-hydroxy-phenylpropionyl)-hexahydro-1,3,5-t-
riazine, 1,3,5-tris(3,5-dicyclohexyl-4-hydroxybenzyl)isocyanurate.
1.11. Benzylphosphonates, for example
dimethyl-2,5-di-tert-butyl-4-hydroxybenzylphosphonate,
diethyl-3,5-di-tert-butyl-4-hydroxybenzylphosphonate,
di-octadecyl3,5-di-tert-butyl-4-hydroxybenzylphosphonate,
dioctadecyl-5-tert-butyl-4-hydroxy-3-methylbenzylphosphonate, the
calcium salt of the monoethyl ester of
3,5-di-tert-butyl-4-hydroxybenzylphosphonic acid. 1.12.
Acylaminophenols, for example 4-hydroxylauranilide,
4-hydroxystearanilide, octyl
N-(3,5-di-tert-butyl-4-hydroxyphenyl)carbamate. 1.13. Esters of
.beta.-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid with mono-
or polyhydric alcohols, e.g. with methanol, ethanol, n-octanol,
i-octanol, octadecanol, 1,6-hexanediol, 1,9-nonanediol, ethylene
glycol, 1,2-propanediol, neopentyl glycol, thiodiethylene glycol,
diethylene glycol, triethylene glycol, pentaerythritol,
tris(hydroxyethyl)isocyanurate, N,N'-bis(hydroxyethyl)oxamide,
3-thiaundecanol, 3-thiapentadecanol, trimethylhexanediol,
trimethylolpropane,
4-hydroxymethyl-1-phospha-2,6,7-trioxabicyclo[2.2.2]octane. 1.14.
Esters of .beta.-(5-tert-butyl-4-hydroxy-3-methylphenyl)propionic
acid with mono- or polyhydric alcohols, e.g. with methanol,
ethanol, n-octanol, i-octanol, octadecanol, 1,6-hexanediol,
1,9-nonanediol, ethylene glycol, 1,2-propanediol, neopentyl glycol,
thiodiethylene glycol, diethylene glycol, triethylene glycol,
pentaerythritol, tris(hydroxyethyl)isocyanurate,
N,N'-bis(hydroxyethyl)oxamide, 3-thiaundecanol, 3-thiapentadecanol,
trimethylhexanediol, trimethylolpropane,
4-hydroxymethyl-1-phospha-2,6,7-trioxabicyclo[2.2.2]octane;
3,9-bis[2-{3-(3-tert-butyl-4-hydroxy-5-methylphenyl)propionyloxy}-1,1-dim-
ethylethyl]-2,4,8,10-tetraoxaspiro[5.5]undecane. 1.15. Esters of
.beta.-(3,5-dicyclohexyl-4-hydroxyphenyl)propionic acid with mono-
or polyhydric alcohols, e.g. with methanol, ethanol, octanol,
octadecanol, 1,6-hexanediol, 1,9-nonanediol, ethylene glycol,
1,2-propanediol, neopentyl glycol, thiodiethylene glycol,
diethylene glycol, triethylene glycol, pentaerythritol,
tris(hydroxyethyl)isocyanurate, N,N'-bis(hydroxyethyl)oxamide,
3-thiaundecanol, 3-thiapentadecanol, trimethylhexanediol,
trimethylolpropane,
4-hydroxymethyl-1-phospha-2,6,7-trioxabicyclo[2.2.2]octane. 1.16.
Esters of 3,5-di-tert-butyl-4-hydroxyphenyl acetic acid with mono-
or polyhydric alcohols, e.g. with methanol, ethanol, octanol,
octadecanol, 1,6-hexanediol, 1,9-nonanediol, ethylene glycol,
1,2-propanediol, neopentyl glycol, thiodiethylene glycol,
diethylene glycol, triethylene glycol, pentaerythritol,
tris(hydroxyethyl)isocyanurate, N,N'-bis(hydroxyethyl)oxamide,
3-thiaundecanol, 3-thiapentadecanol, trimethylhexanediol,
trimethylolpropane,
4-hydroxymethyl-1-phospha-2,6,7-trioxabicyclo[2.2.2]octane. 1.17.
Amides of .beta.-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid
e.g.
N,N'-bis(3,5-di-tert-butyl-4-hydroxyphenylpropionyl)hexamethylenediamide,
N,N'-bis(3,5-di-tert-butyl-4-hydroxyphenylpropionyl)trimethylenediamide,
N,N'-bis(3,5-di-tert-butyl-4-hydroxyphenylpropionyl)hydrazide,
N,N'-bis[2-(3-[3,5-di-tert-butyl-4-hydroxyphenyl]propionyloxy)ethyl]oxami-
de (Naugard.RTM.XL-1, supplied by Uniroyal). 1.18. Ascorbic acid
(vitamin C) 1.19. Aminic antioxidants, for example
N,N'-di-isopropyl-p-phenylenediamine,
N,N'-di-sec-butyl-p-phenylenediamine,
N,N'-bis(1,4-dimethylpentyl)-p-phenylenediamine,
N,N'-bis(1-ethyl-3-methylpentyl)-p-phenylenediamine,
N,N'-bis(1-methylheptyl)-p-phenylenediamine,
N,N'-dicyclohexyl-p-phenylenediamine,
N,N'-diphenyl-p-phenylenediamine,
N,N'-bis(2-naphthyl)-p-phenylenediamine,
N-isopropyl-N'-phenyl-p-phenylenediamine,
N-(1,3-dimethylbutyl)-N'-phenyl-p-phenylenediamine,
N-(1-methylheptyl)-N'-phenyl-p-phenylenediamine,
N-cyclohexyl-N'-phenyl-p-phenylenediamine,
4-(p-toluenesulfamoyl)diphenylamine,
N,N'-dimethyl-N,N'-di-sec-butyl-p-phenylenediamine, diphenylamine,
N-allyldiphenylamine, 4-isopropoxydiphenylamine,
N-phenyl-1-naphthylamine, N-(4-tert-octylphenyl)-1-naphthylamine,
N-phenyl-2-naphthylamine, octylated diphenylamine, for example
p,p'-di-tert-octyldiphenylamine, 4-n-butylaminophenol,
4-butyrylaminophenol, 4-nonanoylaminophenol,
4-dodecanoylaminophenol, 4-octadecanoylaminophenol,
bis(4-methoxyphenyl)amine,
2,6-di-tert-butyl-4-dimethylaminomethylphenol,
2,4'-diaminodiphenylmethane, 4,4'-diaminodiphenylmethane,
N,N,N',N'-tetramethyl-4,4'-diaminodiphenylmethane,
1,2-bis[(2-methylphenyl)amino]ethane, 1,2-bis(phenylamino)propane,
(o-tolyl)biguanide, bis[4-(1',3'-dimethylbutyl)phenyl]amine,
tert-octylated N-phenyl-1-naphthylamine, a mixture of mono- and
dialkylated tert-butyl/tert-octyldiphenylamines, a mixture of mono
and dialkylated nonyldiphenylamines, a mixture of mono- and
dialkylated dodecyldiphenylamines, a mixture of mono- and
dialkylated isopropyl/isohexyldiphenylamines, a mixture of mono-
and dialkylated tert-butyldiphenylamines,
2,3-dihydro-3,3-dimethyl-4H-1,4-benzothiazine, phenothiazine, a
mixture of mono- and dialkylated
tert-butyl/tertoctylphenothiazines, a mixture of mono- and
dialkylated tert-octyl-phenothiazines, N-allylphenothiazine,
N,N,N',N'-tetraphenyl-1,4-diaminobut-2-ene.
2. UV Absorbers and Light Stabilizers
[0041] 2.1. 2-(2'-Hydroxyphenyl)benzotriazoles, for example
2-(2'-hydroxy-5'-methylphenyl)benzotriazole,
2-(3',5'-di-tert-butyl-2'-hydroxyphenyl)benzotriazole,
2-(5'-tert-butyl-2'-hydroxyphenyl)benzotriazole,
2-(2'-hydroxy-5'-(1,1,3,3-tetramethylbutyl)phenyl)benzotriazole,
2-(3',5'-di-tert-butyl-2'-hydroxyphenyl)-5-chloro-benzotriazole,
2-(3'-tert-butyl-2'-hydroxy-5'-methylphenyl)-5-chloro-benzotriazole,
2-(3'-sec-butyl-5'-tert-butyl-2'-hydroxyphenyl)benzotriazole,
2-(2'-hydroxy-4'-octyloxyphenyl)benzotriazole,
2-(3',5'-di-tert-amyl-2'-hydroxyphenyl)benzotriazole,
2-(3',5'-bis-(.alpha.,.alpha.-dimethyl
benzyl)-2'-hydroxyphenyl)benzotriazole,
2-(3'-tert-butyl-2'-hydroxy-5'-(2-octyloxycarbonylethyl)phenyl)-5-chloro--
benzotriazole,
2-(3'-tert-butyl-5'-[2-(2-ethylhexyloxy)-carbonylethyl]-2'-hydroxyphenyl)-
-5-chloro-benzotriazole,
2-(3'-tert-butyl-2'-hydroxy-5'-(2-methoxycarbonylethyl)phenyl)-5-chloro-b-
enzotriazole,
2-(3'-tert-butyl-2'-hydroxy-5'-(2-methoxycarbonylethyl)phenyl)benzotriazo-
le,
2-(3'-tert-butyl-2'-hydroxy-5'-(2-octyloxycarbonylethyl)phenyl)benzotr-
iazole,
2-(3'-tert-butyl-5'-[2-(2-ethylhexyloxy)carbonylethyl]-2'-hydroxyp-
henyl)benzotriazole,
2-(3'-dodecyl-2'-hydroxy-5'-methylphenyl)benzotriazole,
2-(3'-tert-butyl-2'-hydroxy-5'-(2-isooctyloxycarbonylethyl)phenyl
benzotriazole,
2,2'-methylene-bis[4-(1,1,3,3-tetramethylbutyl)-6-benzotriazole-2-ylpheno-
l]; the transesterification product of
2-[3'-tert-butyl-5'-(2-methoxycarbonylethyl)-2'-hydroxyphenyl]-2H-benzotr-
iazole with polyethylene glycol 300;
##STR00006##
where R=3'-tert-butyl-4'-hydroxy-5'-2H-benzotriazol-2-ylphenyl,
2-[2'-hydroxy-3'-(.alpha.,.alpha.-dimethyl
benzyl)-5'-(1,1,3,3-tetramethylbutyl)-phenyl]benzotriazole;
2-[2'-hydroxy-3'-(1,1,3,3-tetramethylbutyl)-5'-(.alpha.,.alpha.-dimethylb-
enzyl)-phenyl]benzotriazole. 2.2. 2-Hydroxybenzophenones, for
example the 4-hydroxy, 4-methoxy, 4-octyloxy, 4-decyloxy,
4-dodecyloxy, 4-benzyloxy, 4,2',4'-trihydroxy and
2'-hydroxy-4,4'-dimethoxy derivatives. 2.3. Esters of substituted
and unsubstituted benzoic acids, for example 4-tert-butylphenyl
salicylate, phenyl salicylate, octylphenyl salicylate, dibenzoyl
resorcinol, bis(4-tert-butylbenzoyl)resorcinol, benzoyl resorcinol,
2,4-di-tert-butylphenyl 3,5-di-tert-butyl-4-hydroxybenzoate,
hexadecyl 3,5-di-tert-butyl-4-hydroxybenzoate, octadecyl
3,5-di-tert-butyl-4-hydroxybenzoate,
2-methyl-4,6-di-tert-butylphenyl
3,5-di-tert-butyl-4-hydroxybenzoate. 2.4. Acrylates, for example
ethyl .alpha.-cyano-.beta.,.beta.-diphenylacrylate, isooctyl
.alpha.-cyano-.beta.,.beta.-diphenylacrylate, methyl
.alpha.-carbomethoxycinnamate, methyl
.alpha.-cyano-.beta.-methyl-p-methoxycinnamate, butyl
.alpha.-cyano-.beta.-methyl-p-methoxy-cinnamate, methyl
.alpha.-carbomethoxy-p-methoxycinnamate,
N-(.beta.-carbomethoxy-.beta.-cyanovinyl)-2-methylindoline,
neopentyl tetra(.alpha.-cyano-.beta.,.beta.-diphenylacrylate. 2.5.
Nickel compounds, for example nickel complexes of
2,2'-thio-bis[4-(1,1,3,3-tetramethylbutyl)phenol], such as the 1:1
or 1:2 complex, with or without additional ligands such as
n-butylamine, triethanolamine or N-cyclohexyldiethanolamine, nickel
dibutyldithiocarbamate, nickel salts of the monoalkyl esters, e.g.
the methyl or ethyl ester, of
4-hydroxy-3,5-di-tert-butylbenzylphosphonic acid, nickel complexes
of ketoximes, e.g. of 2-hydroxy-4-methylphenylundecylketoxime,
nickel complexes of 1-phenyl-4-lauroyl-5-hydroxypyrazole, with or
without additional ligands. 2.6. Sterically hindered amines, for
example carbonic acid
bis(1-undecyloxy-2,2,6,6-tetramethyl-4-piperidyl)ester,
bis(2,2,6,6-tetramethyl-4-piperidyl)sebacate,
bis(2,2,6,6-tetramethyl-4-piperidyl)succinate,
bis(1,2,2,6,6-pentamethyl-4-piperidyl)sebacate,
bis(1-octyloxy-2,2,6,6-tetramethyl-4-piperidyl)sebacate,
bis(1,2,2,6,6-pentamethyl-4-piperidyl)
n-butyl-3,5-di-tert-butyl-4-hydroxybenzylmalonate, the condensate
of 1-(2-hydroxyethyl)-2,2,6,6-tetramethyl-4-hydroxypiperidine and
succinic acid, linear or cyclic condensates of
N,N'-bis(2,2,6,6-tetramethyl-4-piperidyl)hexamethylenediamine and
4-tert-octylamino-2,6-dichloro-1,3,5-triazine,
tris(2,2,6,6-tetramethyl-4-piperidyl)nitrilotriacetate,
tetrakis(2,2,6,6-tetramethyl-4-piperidyl)-1,2,3,4-butanetetracarboxylate,
1,1'-(1,2-ethanediyl)-bis(3,3,5,5-tetramethylpiperazinone),
4-benzoyl-2,2,6,6-tetramethylpiperidine,
4-stearyloxy-2,2,6,6-tetramethylpiperidine,
bis(1,2,2,6,6-pentamethylpiperidyl)-2-n-butyl-2-(2-hydroxy-3,5-di-tert-bu-
tylbenzyl)malonate,
3-n-octyl-7,7,9,9-tetramethyl-1,3,8-triazaspiro[4.5]decane-2,4-dione,
bis(1-octyloxy-2,2,6,6-tetramethylpiperidyl)sebacate,
bis(1-octyloxy-2,2,6,6-tetramethylpiperidyl)succinate, linear or
cyclic condensates of
N,N'-bis(2,2,6,6-tetramethyl-4-piperidyl)hexamethylenediamine and
4-morpholino-2,6-dichloro-1,3,5-triazine, the condensate of
2-chloro-4,6-bis(4-n-butylamino-2,2,6,6-tetramethylpiperidyl)-1,3,5-triaz-
ine and 1,2-bis(3-aminopropylamino)ethane, the condensate of
2-chloro-4,6-di-(4-n-butylamino-1,2,2,6,6-pentamethylpiperidyl)-1,3,5-tri-
azine and 1,2-bis(3-aminopropylamino)ethane,
8-acetyl-3-dodecyl-7,7,9,9-tetramethyl-1,3,8-triazaspiro[4.5]decane-2,4-d-
ione,
3-dodecyl-1-(2,2,6,6-tetramethyl-4-piperidyl)pyrrolidine-2,5-dione,
3-dodecyl-1-(1,2,2,6,6-pentamethyl-4-piperidyl)pyrrolidine-2,5-dione,
a mixture of 4-hexadecyloxy- and
4-stearyloxy-2,2,6,6-tetramethylpiperidine, a condensate of
N,N'-bis(2,2,6,6-tetramethyl-4-piperidyl)hexamethylenediamine and
4-cyclohexylamino-2,6-dichloro-1,3,5-triazine, a condensate of
1,2-bis(3-aminopropylamino)ethane and
2,4,6-trichloro-1,3,5-triazine as well as
4-butylamino-2,2,6,6-tetramethylpiperidine (CAS Reg. No.
[136504-96-6]); a condensate of 1,6-hexanediamine and
2,4,6-trichloro-1,3,5-triazine as well as N,N-dibutylamine and
4-butylamino-2,2,6,6-tetramethylpiperidine (CAS Reg. No.
[192268-64-7]);
N-(2,2,6,6-tetramethyl-4-piperidyl)-n-dodecylsuccinimide,
N-(1,2,2,6,6-pentamethyl-4-piperidyl)-n-dodecylsuccinimide,
2-undecyl-7,7,9,9-tetramethyl-1-oxa-3,8-diaza-4-oxo-spiro[4,5]decane,
a reaction product of
7,7,9,9-tetramethyl-2-cycloundecyl-1-oxa-3,8-diaza-4-oxospiro-[4,5]decane
and epichlorohydrin,
1,1-bis(1,2,2,6,6-pentamethyl-4-piperidyloxycarbonyl)-2-(4-methoxyphenyl)-
ethene,
N,N'-bis-formyl-N,N'-bis(2,2,6,6-tetramethyl-4-piperidyl)hexamethy-
lenediamine, a diester of 4-methoxymethylenemalonic acid with
1,2,2,6,6-pentamethyl-4-hydroxypiperidine,
poly[methylpropyl-3-oxy-4-(2,2,6,6-tetramethyl-4-piperidyl)]siloxane,
a reaction product of maleic acid anhydride-.alpha.-olefin
copolymer with 2,2,6,6-tetramethyl-4-aminopiperidine or
1,2,2,6,6-pentamethyl-4-aminopiperidine,
2,4-bis[N-(1-cyclohexyloxy-2,2,6,6-tetramethylpiperidine-4-yl)-N-butylami-
no]-6-(2-hydroxyethyl)amino-1,3,5-triazine,
1-(2-hydroxy-2-methylpropoxy)-4-octadecanoyloxy-2,2,6,6-tetramethylpiperi-
dine, 5-(2-ethylhexanoyl)oxymethyl-3,3,5-trimethyl-2-morpholinone,
Sanduvor (Clariant; CAS Reg. No. 106917-31-1],
5-(2-ethylhexanoyl)oxymethyl-3,3,5-trimethyl-2-morpholinone, the
reaction product of
2,4-bis[(1-cyclohexyloxy-2,2,6,6-piperidine-4-yl)butylamino]-6-chloro-s-t-
riazine with N,N'-bis(3-aminopropyl)ethylenediamine),
1,3,5-tris(N-cyclohexyl-N-(2,2,6,6-tetramethylpiperazine-3-one-4-yl)amino-
)-s-triazine,
1,3,5-tris(N-cyclohexyl-N-(1,2,2,6,6-pentamethylpiperazine-3-one-4-yl)ami-
no)-s-triazine,
##STR00007##
2.7. Oxamides, for example 4,4'-dioctyloxyoxanilide,
2,2'-diethoxyoxanilide, 2,2'-dioctyloxy-5,5'-di-tert-butoxanilide,
2,2'-didodecyloxy-5,5'-di-tert-butoxanilide,
2-ethoxy-2'-ethyloxanilide, N,N'-bis(3-dimethylaminopropyl)oxamide,
2-ethoxy-5-tert-butyl-2'-ethoxanilide and its mixture with
2-ethoxy-2'-ethyl-5,4'-d -tert-butoxanilide, mixtures of o- and
p-methoxy-disubstituted oxanilides and mixtures of o- and
p-ethoxy-disubstituted oxanilides. 2.8.
2-(2-Hydroxyphenyl)-1,3,5-triazines, for example
2,4,6-tris(2-hydroxy-4-octyloxyphenyl)-1,3,5-triazine,
2-(2-hydroxy-4-octyloxyphenyl)-4,6-bis(2,4-dimethylphenyl)-1,3,5-triazine-
,
2-(2,4-dihydroxyphenyl)-4,6-bis(2,4-dimethylphenyl)-1,3,5-triazine,
2,4-bis(2-hydroxy-4-propyloxyphenyl)-6-(2,4-dimethylphenyl)-1,3,5-triazin-
e,
2-(2-hydroxy-4-octyloxyphenyl)-4,6-bis(4-methylphenyl)-1,3,5-triazine,
2-(2-hydroxy-4-dodecyloxyphenyl)-4,6-bis(2,4-dimethylphenyl)-1,3,5-triazi-
ne,
2-(2-hydroxy-4-tridecyloxyphenyl)-4,6-bis(2,4-dimethylphenyl)-1,3,5-tr-
iazine,
2-[2-hydroxy-4-(2-hydroxy-3-butyloxypropoxy)phenyl]-4,6-bis(2,4-di-
methyl)-1,3,5-triazine,
2-[2-hydroxy-4-(2-hydroxy-3-octyloxypropyloxy)phenyl]-4,6-bis(2,4-dimethy-
l)-1,3,5-triazine,
2-[4-(dodecyloxy/tridecyloxy-2-hydroxypropoxy)-2-hydroxyphenyl]-4,6-bis(2-
,4-dimethylphenyl)-1,3,5-triazine,
2-[2-hydroxy-4-(2-hydroxy-3-dodecyloxypropoxy)phenyl]-4,6-bis(2,4-dimethy-
lphenyl)-1,3,5-triazine,
2-(2-hydroxy-4-hexyloxy)phenyl-4,6-diphenyl-1,3,5-triazine,
2-(2-hydroxy-4-methoxyphenyl)-4,6-diphenyl-1,3,5-triazine,
2,4,6-tris[2-hydroxy-4-(3-butoxy-2-hydroxypropoxy)phenyl]-1,3,5-triazine,
2-(2-hydroxyphenyl)-4-(4-methoxyphenyl)-6-phenyl-1,3,5-triazine,
2-{2-hydroxy-4-[3-(2-ethylhexyl-1-oxy)-2-hydroxypropyloxy]phenyl}-4,6-bis-
(2,4-dimethylphenyl)-1,3,5-triazine,
2,4-bis(4-[2-ethylhexyloxy]-2-hydroxyphenyl)-6-(4-methoxyphenyl)-1,3,5-tr-
iazine,
2-(4,6-bis-biphenyl-4-yl-1,3,5-triazin-2-yl)-5-(2-ethyl-(n)hexylox-
y)phenol. 3. Metal deactivators, for example N,N'-diphenyloxamide,
N-salicylal-N'-salicyloyl hydrazine, N,N'-bis(salicyloyl)hydrazine,
N,N'-bis(3,5-di-tert-butyl-4-hydroxyphenylpropionyl)hydrazine,
3-salicyloylamino-1,2,4-triazole, bis(benzylidene)oxalyl
dihydrazide, oxanilide, isophthaloyl dihydrazide, sebacoyl
bisphenylhydrazide, N,N'-diacetyladipoyl dihydrazide,
N,N'-bis(salicyloyl)oxalyl dihydrazide,
N,N'-bis(salicyloyl)thiopropionyl dihydrazide. 4. Phosphites and
phosphonites, for example triphenyl phosphite, diphenylalkyl
phosphites, phenyldialkyl phosphites, tris(nonylphenyl) phosphite,
trilauryl phosphite, trioctadecyl phosphite,
distearylpentaerythritol diphosphite, tris(2,4-di-tert-butylphenyl)
phosphite, diisodecyl pentaerythritol diphosphite,
bis(2,4-di-tert-butylphenyl)pentaerythritol diphosphite,
bis(2,4-di-cumylphenyl)pentaerythritol diphosphite,
bis(2,6-di-tert-butyl-4-methylphenyl)pentaerythritol diphosphite,
diisodecyloxypentaerythritol diphosphite,
bis(2,4-di-tert-butyl-6-methylphenyl)pentaerythritol diphosphite,
bis(2,4,6-tris(tert-butylphenyl)pentaerythritol diphosphite,
tristearyl sorbitol triphosphite, tetrakis(2,4-di-tert-butylphenyl)
4,4'-biphenylene diphosphonite,
6-isooctyloxy-2,4,8,10-tetra-tert-butyl-12H-dibenz[d,g]-1,3,2-dioxaphosph-
ocin, bis(2,4-di-tert-butyl-6-methylphenyl)methyl phosphite,
bis(2,4-di-tert-butyl-6-methylphenyl)ethyl phosphite,
6-fluoro-2,4,8,10-tetra-tert-butyl-12-methyl-dibenz[d,g]-1,3,2-dioxaphosp-
hocin,
2,2',2''-nitrilo[triethyltris(3,3',5,5'-tetra-tert-butyl-1,1'-biphe-
nyl-2,2'-diyl)phosphite],
2-ethylhexyl(3,3',5,5'-tetra-tert-butyl-1,1'-biphenyl-2,2'-diyl)phosphite-
,
5-butyl-5-ethyl-2-(2,4,6-tri-tert-butylphenoxy)-1,3,2-dioxaphosphirane.
[0042] The following phosphites are especially preferred:
[0043] Tris(2,4-di-tert-butylphenyl) phosphite (Irgafos.RTM.168,
Ciba Specialty Chemicals Inc.), tris(nonylphenyl) phosphite,
##STR00008##
5. Hydroxylamines, for example N,N-dibenzylhydroxylamine,
N,N-diethylhydroxylamine, N,N-dioctylhydroxylamine,
N,N-dilaurylhydroxylamine, N,N-ditetradecylhydroxylamine,
N,N-dihexadecylhydroxylamine, N,N-dioctadecylhydroxylamine,
N-hexadecyl-N-octadecylhydroxylamine,
N-heptadecyl-N-octadecylhydroxylamine, N,N-dialkylhydroxylamine
derived from hydrogenated tallow amine. 6. Nitrones, for example,
N-benzyl-alpha-phenylnitrone, N-ethyl-alpha-methylnitrone,
N-octyl-alpha-heptylnitrone, N-lauryl-alpha-undecylnitrone,
N-tetradecyl-alpha-tridecylnnitrone,
N-hexadecyl-alpha-pentadecylnitrone,
N-octadecyl-alpha-heptadecylnitrone,
N-hexadecyl-alpha-heptadecylnitrone,
N-ocatadecyl-alpha-pentadecylnitrone,
N-heptadecyl-alpha-heptadecylnitrone,
N-octadecyl-alphahexadecylnitrone, nitrone derived from
N,N-dialkylhydroxylamine derived from hydrogenated tallow amine. 7.
Thiosynergists, for example dilauryl thiodipropionate, dimistryl
thiodipropionate, distearyl thiodipropionate, pentaerythritol
tetrakis[3-(dodecylthio)propionate] or distearyl disulfide. 8.
Peroxide scavengers, for example esters of .beta.-thiodipropionic
acid, for example the lauryl, stearyl, myristyl or tridecyl esters,
mercaptobenzimidazole or the zinc salt of 2-mercaptobenzimidazole,
zinc dibutyldithiocarbamate, dioctadecyl disulfide, pentaerythritol
tetrakis(.beta.-dodecylmercapto)propionate. 9. Polyamide
stabilizers, for example copper salts in combination with iodides
and/or phosphorus compounds and salts of divalent manganese. 10.
Basic co-stabilizers, for example melamine, polyvinylpyrrolidone,
dicyandiamide, triallyl cyanurate, urea derivatives, hydrazine
derivatives, amines, polyamides, polyurethanes, alkali metal salts
and alkaline earth metal salts of higher fatty acids, for example
calcium stearate, zinc stearate, magnesium behenate, magnesium
stearate, sodium ricinoleate and potassium palmitate, antimony
pyrocatecholate or zinc pyrocatecholate. 11. Nucleating agents, for
example inorganic substances, such as talcum, metal oxides, such as
titanium dioxide or magnesium oxide, phosphates, carbonates or
sulfates of, preferably, alkaline earth metals; organic compounds,
such as mono- or polycarboxylic acids and the salts thereof, e.g.
4-tert-butylbenzoic acid, adipic acid, diphenylacetic acid, sodium
succinate or sodium benzoate; polymeric compounds, such as ionic
copolymers (ionomers). Especially preferred are
1,3:2,4-bis(3',4'-dimethylbenzylidene)sorbitol,
1,3:2,4-di(paramethyldibenzylidene)sorbitol, and
1,3:2,4-di(benzylidene)sorbitol. 12. Fillers and reinforcing
agents, for example calcium carbonate, silicates, glass fibres,
glass beads, asbestos, talc, kaolin, mica, barium sulfate, metal
oxides and hydroxides, carbon black, graphite, wood flour and
flours or fibers of other natural products, synthetic fibers. 13.
Other additives, for example plasticisers, lubricants, emulsifiers,
pigments, rheology additives, catalysts, flow-control agents,
optical brighteners, flameproofing agents, antistatic agents and
blowing agents. 14. Benzofuranones and indolinones, for example
those disclosed in U.S. Pat. No. 4,325,863; U.S. Pat. No.
4,338,244; U.S. Pat. No. 5,175,312; U.S. Pat. No. 5,216,052; U.S.
Pat. No. 5,252,643; DE-A-4316611; DE-A-4316622; DE-A-4316876;
EP-A-0589839, EP-A-0591102; EP-A-1291384 or
3-[4-(2-acetoxyethoxy)phenyl]-5,7-di-tert-butylbenzofuran-2-one,
5,7-di-tert-butyl-3-[4-(2-stearoyloxyethoxy)phenyl]benzofuran-2-one,
3,3'-bis[5,7-di-tert-butyl-3-(4-[2-hydroxyethoxy]phenyl)benzofuran-2-one]-
, 5,7-di-tert-butyl-3-(4-ethoxyphenyl)benzofuran-2-one,
3-(4-acetoxy-3,5-dimethylphenyl)-5,7-di-tert-butylbenzofuran-2-one,
3-(3,5-dimethyl-4-pivaloyloxyphenyl)-5,7-di-tert-butylbenzofuran-2-one,
3-(3,4-dimethylphenyl)-5,7-di-tert-butylbenzofuran-2-one,
3-(2,3-dimethylphenyl)-5,7-di-tert-butylbenzofuran-2-one,
3-(2-acetyl-5-isooctylphenyl)-5-isooctylbenzofuran-2-one.
[0044] Phenolic antioxidants are preferred. Of interest are those
listed above under item 1. Of particular interest are phenolic
antioxidants and process stabilizers such as pentaerythritol
tetrakis[3,5-di-tert-butyl-4-hydroxyphenylpropionate],
octadecyl-3-(3,5-di-tert-butyl-4-hydroxyphenyl)proprionate,
1,3,5-tris(3,5-di-tert-butyl-4-hydroxybenzyl)-2,4,6-trimethylbenzene,
N,N'-bis(3,5-di-tert-butyl-4-hydroxyphenylpropionyl)hexamethylene-diamide-
, 1,3,5-tris[3,5-di-tert-butyl-4-hydroxybenzyl]isocyanurate,
2,4-di-t-butylphenyl-3,5-di-t-butyl-4-hydroxybenzoate,
bis(1,2,2,6,6-pentamethylpiperidin-4-yl)-butyl(3,5-di-t-butyl-4-hydroxybe-
nzyl)malonate) and tris[2,4-di-tert-butylphenyl]phosphite.
[0045] Further preferred additives are pentaerythritol
tetrakis[3-(dodecylthio)propionate] and Ca stearate.
[0046] Pigments such as TiO.sub.2 and carbon black are further
preferred. Fillers such as talc are also of interest.
[0047] Preferred additives are also sterically hindered amine light
stabilizers and/or UV-absorbers, in particular those listed above
under item 2.
[0048] The weight ratio of the compound of the formula (I) to the
conventional additive is for example 1:100 to 100:1, preferably
1:100 to 10:1, in particular 1:10 to 10:1.
[0049] Another object of the present invention is method for
stabilizing an organic material against degradation induced by
light, heat or oxidation which comprises incorporating into said
organic material at least one compound of the formula (I).
[0050] The examples below illustrate the invention in greater
detail. All percentages and parts mentioned in the present
application are by weight, unless stated otherwise.
EXAMPLE 1
Preparation of
2N,4N'-dibutyl-2N,4N'-bis(1,2,2,6,6-pentamethyl-4-piperidyl)-6-pyrrolidin-
-1-yl-1,3,5-triazine-2,4-diamine (=Compound A)
[0051] The starting material
2N,4N'-dibutyl-6-chloro-2N,4N'-bis(1,2,2,6,6-tetramethylpiperidin-4-yl)-1-
,3,5-triazine-2,4-diamine is known and can be prepared in analogy
to known methods, e.g. as described in Example 2A of U.S. Pat. No.
5,268,401.
Method A:
[0052] 43.19 g of
2N,4N'-dibutyl-6-chloro-2N,4N'-bis(1,2,2,6,6-tetramethylpiperidin-4-yl)-1-
,3,5-triazine-2,4-diamine, 5.6 g of pyrrolidine, 15 g of aqueous
sodium hydroxide (30%) and 30 g of xylene are added in a steel
autoclave. The reactor is three times flashed with argon. Then, the
reactor is heated up to 160.degree. C. for 20 h. After complete
conversion, the reaction mixture is diluted with water and toluene,
the phases are separated and the organic layer is washed with water
several times. After drying over sodium sulfate 51.1 g of white
cured solid is obtained. The product is solved in 150 ml of hot
hexane and the crystals are filtered off and dried. As yield, 41.6
g of white product (=89% of theory) are isolated.
TLC (n-Hexane/Ethyl Acetate 2:1 Plus 5 Drops Ammonium Hydroxide
Solution): Rf=0.82.
[0053] 1H NMR: (400 MHz, CHLOROFORM-d): ppm 5.17 (2H, m), 3.49 (4H,
dd), 3.33 (4H, dd), 2.25 (6H, s), 1.87 (4H, dd), 1.67-1.50 (12H,
m), 1.37-1.22 (4H, m), 1.16 (12H, s), 1.10 (12H, s), 0.96-0.86 (6H,
m).
Method B:
[0054] 93.4 g of
2N,4N'-dibutyl-6-chloro-2N,4N'-bis(1,2,2,6,6-tetramethylpiperidin-4-yl)-1-
,3,5-triazine-2,4-diamine are dissolved in 86.5 ml of xylene. 12.0
g of pyrrolidine, 23.2 g of aqueous sodium hydroxide (30%) and 29.9
g of water are added and the solution is heated up to 70.degree. C.
for 3 h. After complete reaction the phases are split and the
organic phase is washed with water several times. Solvent is
removed at 200.degree. C., 50 mbar. The hot melt is filled on a
plate and cooled down. The product (90.0 g (=90% of theory) is a
yellow brownish melt with a solidification temperature of
75-80.degree. C.
Form Giving:
[0055] The obtained solidified product can be converted into a
highly crystalline product form on an extrusion after seeding with
crystalline material.
[0056] Melting point: 165-172.degree. C.
EXAMPLE 2
Stabilization of a Thermoplastic Polypropylene
Base Formulation
[0057] 79.275% by weight of thermoplastic polypropylene
(Daplen.RTM. EE013 AE of Borealis;
[0058] Melt Flow Rate: 11 g/10 min (ISO 1133); Density: 905
kg/m.sup.3 (ISO 1183)
[0059] 20% by weight of talc,
[0060] 0.225% by weight of carbon,
and
[0061] 0.5% by weight of TiO.sub.2.
Preparation of the Tested Specimen:
[0062] The base formulation is pre-mixed in a Pappermaier.RTM.
ESK-150 mixer. This mixture is combined with 0.2% by weight of
Compound (A) on a Mixaco Lab CM12 high speed mixer and then
compounded on a Berstorff.RTM. ZE 25x32D extruder at 220.degree. C.
The full formulation is then injection molded on an Engel HL65
injection molding machine at 240.degree. C.
[0063] The injection molded plaques 40 mm.times.60 mm.times.2 mm or
25 mm.times.60 mm.times.2 mm are exposed to artificial weathering
according to the international norm SAE J2412. The parameters
measured are color deviation (Delta E) and gloss at 60.degree..
[0064] The results are listed in Tables 1 and 2.
TABLE-US-00001 TABLE 1 Delta E (Low values are desired.) Sterically
hindered Hours exposure amine 0 500 990 1490 1990 2510 2930 3110
None 0 13.5 15.2 -- -- -- -- -- Compound A 0 0.2 0.9 1.3 1.3 1.7
1.3 1.5
TABLE-US-00002 TABLE 2 Gloss at 60.degree. (High values are
desired.) Hours exposure Sterically hindered amine 0 1990 2510 3000
None 21.5 -- -- -- Compound A 22.3 25.8 26.5 26.5
EXAMPLE 3
Stabilization of a Thermoplastic Polypropylene
[0065] The test specimens are prepared in analogy to the method
described in Example 2 and are evaluated for their stickiness
according to VW PV1306 standard after artificial weathering.
Evaluation Parameters:
TABLE-US-00003 [0066] Rating Sample ok 1 lackluster/but NOT sticky
S Slightly sticky 2 Sticky 3 Very sticky 4 Resinified H Wax-like W
Test terminated, microcracks X *.sup.) The rating is the result of
the evaluation of 3-5 people.
TABLE-US-00004 TABLE 3 Stickiness Rating after Sterically hindered
amine 0 3 cycles 9 cycles 13 cycles 18 cycles None 1 1 1 1-S Sample
is destroyed 0.2% of Compound A 1 1 1 1 1 A cycle corresponds to 96
hours.
[0067] The results shown above clearly reveal that Compound A does
not add further stickiness to the thermoplastic polypropylene
samples.
EXAMPLE 4
Stabilization of a Thermoplastic Acrylonitrile/Butadiene/Styrene
(ABS)
[0068] The following two formulations are prepared based on ABS
(Styrolution Terluran.RTM.GP22, which is an easy-flow, general
purpose injection molding grade with high resistance to impact and
heat distortion, intended for a wide range of applications, with 19
cm.sup.3/10 min Melt Volume Rate, 220.degree. C./10 kg):
"Standard Polymer":
[0069] 96.00% of Terluran.RTM.GP-22
[0070] 3.00% of Titanium Dioxide Kronos.RTM.2220
[0071] 1.00% of Acrawax.RTM.C Powder
Formulation No 1:
[0072] 100.00% "of Standard Polymer"
Formulation No 2:
[0073] 99.65% of "Standard Polymer"
[0074] 0.25% of Compound A
[0075] 0.10% of Paraffin Oil
Preparation of the Tested Specimen:
[0076] The formulations are pre-mixed in a Rohnrad Elite 650 mixer
and then compounded on a Berstorff.RTM. ZE 25x32D extruder at
220.degree. C. After compounding the formulations are dryed for 2
hours at 80.degree. C. and then injection molded on an Arburg 320 S
injection molding machine at 240.degree. C.
[0077] The injection molded plaques with sizes of 68 mm.times.44
mm.times.2 mm are exposed to artificial weathering according to the
international norm ASTM G 155-C1. The parameters measured are color
deviation (Delta E, aperture 20 mm, D65, 10.degree.). The results
are listed in Table 4.
TABLE-US-00005 TABLE 4 Delta E*.sup.) after weathering time
according to ASTM G 155-C1 in h Formulation 0 168 336 672 No. 1 0.0
0.3 3.7 12.0 No. 2 0.0 0.8 1.8 8.2 *.sup.)Low values are
desired.
EXAMPLE 5
Stabilization of a Thermoplastic Flexible Polyvinyl Chloride
(PVC)
"Standard Polymer":
[0078] 64.73% of Norvinyl.RTM.S7060 (Vinyl chloride
homopolymer)
[0079] 32.36% of Palatinol.RTM.N (Plasticiser)
[0080] 1.61% of Drapex.RTM.39 (Epoxidised soy bean oil)
[0081] 1.30% of Baerostab.RTM.CT 9051 XRF (CaZn Stabilizer)
Formulation No. 1:
[0082] 100.00% of "Standard polymer"
Formulation No. 2:
[0083] 99.50% of "Standard polymer"
[0084] 0.25% of Chimassorb.RTM.81
(2-hydroxy-4-octyloxybenzophenone)
[0085] 0.25% of Compound A
Preparation of the Tested Specimen:
[0086] The formulations are pre-mixed per tumble mixer and then
compounded for 7 min on a Collin.RTM. two-roll-mill at 160.degree.
C. with 0.4 mm gap. The films obtained are then exposed to
artificial weathering according to the international norm ASTM G
154-C1. The parameter measured is color deviation (Delta E,
aperture 20 mm, D65, 10.degree.). The results are listed in Tables
5.
TABLE-US-00006 TABLE 5 Delta E*.sup.) after weathering time
according to ASTM G 154-C1 in h Formulation 0 250 No. 1 0 0.35 No.
2 0 0.18 *.sup.)Low values are desired.
EXAMPLE 6
Stabilization of a Polymethylmethacrylate (PMMA) Solution Cast Film
(1)
[0087] 10 g of Plexiglas 7 N (Evonik) are dissolved in 40 g of
methylene chloride together with 50 mg of Compound A. Films are
drawn with the help of an automatic blade (Erichsen.RTM.) with a
blade speed of 12 mm/sec and a gap height of 120 .mu.m. The films
are then exposed to xenon light in accordance to former ASTM G 26 C
(Xe light, 2 borosilicate filters "S", 0.35 W/m2 at 340 nm,
63.degree. C..+-.3.degree. C., 50-60% rel. humidity, continuous
light, no water spray). The color is measured in accordance to DIN
6167 (1980-01). The results are shown in Table 6.
TABLE-US-00007 TABLE 6 hours 0 99 263 472 1006 1504 2017 2498 2998
3987 YI (Yellowness Index)*.sup.) 0.1 0.4 0.3 0.4 0.6 0.3 0.7 0.5
0.5 0.8 .DELTA.E (Color difference)*.sup.) 0.0 0.3 0.1 0.3 0.5 0.3
0.5 0.3 0.3 0.5 b* (Color coordinate)*.sup.) 0.2 0.4 0.3 0.3 0.4
0.3 0.5 0.4 0.4 0.5 *.sup.)Low values are desired.
EXAMPLE 7
Stabilization of a Polymethylmethacrylate (PMMA) Solution Cast Film
(2)
[0088] 10 g of Plexiglas 7 N (Evonik) are dissolved in 40 g of
methylene chloride together with 50 mg of Compound A and 100 mg of
2,2'-methylenebis(6-(2H-benzotriazol-2-yl)-4-1,1,3,3-tetramethylbutyl)phe-
nol (Tinuvin.RTM.360). Films are drawn with the help of an
automatic blade (Erichsen.RTM.) with a blade speed of 12 mm/sec and
a gap height of 120 .mu.m. The freshly drawn film is dried for 10
minutes. The resulting film with a thickness of 25 .mu.m has a
yellowness index of 16.3. (DIN 6167(1980-01)). This film is then
exposed to xenon light in accordance to former ASTM G 26 C (Xe
light, 2 borosilicate filters "S", 0.35 W/m2 at 340 nm, 63.degree.
C..+-.3.degree. C., 50-60% rel. humidity, continuous light, no
water spray). The color is measured in accordance to DIN 6167
(1980-01). The results are shown in Table 7.
TABLE-US-00008 TABLE 7 hours 0 99 263 472 1006 1504 2017 2498 2998
3987 YI (Yellowness Index)*.sup.) 0.0 0.6 0.2 0.7 1.1 1.0 1.4 1.1
1.3 1.6 .DELTA.E (Color difference)*.sup.) 0.0 0.6 0.2 0.6 0.9 0.7
1.0 0.7 0.8 1.0 b* (Color coordinate)*.sup.) 0.1 0.5 0.3 0.5 0.8
0.7 0.9 0.8 0.8 1.0 *.sup.)Low values are desired.
EXAMPLE 8
Stabilization of a Polymethylmethacrylate (PMMA) Cast Thick Sheet
(1)
[0089] 70 g of freshly distilled methylmethacrylate are mixed with
70 mg of lauroylperoxide and 105 mg of Compound A. The mixture is
degassed and heated in a twist-off glass for 3 hours in a water
bath at 60.degree. C. The prepolymerized syrup is poured between
two glass plates, with 1.8 mm distance, which are sealed on three
sides. This glass sandwich is kept for 16 hours at 60.degree. C. in
an oven, followed by 3 hours at 120.degree. C. The resulting
polymethylmethacrylate (PMMA) sheet has a yellowness index of 32.2
(DIN 6167 (1980-01)). This sheet is then exposed to xenon light in
accordance to former ASTM G 26 C (Xe light, 2 borosilicate filters
"S", 0.35 W/m2 at 340 nm, 63.degree. C..+-.3.degree. C., 50-60%
rel. humidity, continuous light, no water spray). The color is
measured in accordance to DIN 6167 (1980-01). The results are shown
in Table 8.
TABLE-US-00009 TABLE 8 hours 0 255 496 733 999 1502 2005 2494 3028
4035 4995 YI (Yellowness Index)*.sup.) 2.7 1.2 0.7 0.3 0.3 0.3 0.2
0.2 0.2 0.2 0.4 .DELTA.E (Color difference)*.sup.) 0.0 1.3 1.6 1.8
1.9 1.9 1.9 1.9 1.9 1.9 1.9 b* (Color coordinate)*.sup.) 2.0 0.8
0.6 0.3 0.3 0.3 0.2 0.2 0.3 0.3 0.3 *.sup.)Low values are
desired.
EXAMPLE 9
Stabilization of a Polymethylmethacrylate (PMMA) Thick Sheet
(2)
[0090] 70 g of freshly distilled methylmethacrylate are mixed with
70 mg of lauroylperoxide, 105 mg of Compound A and 105 mg of
2-(2H-benzotriazol-2-yl)-p-cresol (Tinuvin.RTM.P). The mixture is
degassed and heated in a twist-off glass for 3 hours in a water
bath at 60.degree. C. The prepolymerized syrup is poured between
two glass plates, with 1.8 mm distance, which are sealed on three
sides. This glass sandwich is kept for 16 hours at 60.degree. C. in
an oven, followed by 3 hours at 120.degree. C. The resulting PMMA
sheet has a yellowness index of 32.2 (DIN 6167 (1980-01)). This
sheet is then exposed to xenon light in accordance to former ASTM G
26 C (Xe light, 2 borosilicate filters "S", 0.35 W/m2 at 340 nm,
63.degree. C..+-.3.degree. C., 50-60% rel. humidity, continuous
light, no water spray). The color is measured in accordance to DIN
6167 (1980-01). The results are shown in Table 9.
TABLE-US-00010 TABLE 9 hours 0 255 496 733 999 1502 2005 2494 3028
4035 4995 YI (Yellowness Index)*.sup.) 3.1 0.5 0.5 0.5 0.6 0.7 0.6
0.7 0.7 0.8 1.0 .DELTA.E (Color difference)*.sup.) 0.0 1.9 1.9 1.9
1.9 1.8 1.8 1.8 1.8 1.8 1.7 b* (Color coordinate)*.sup.) 2.2 0.5
0.4 0.4 0.5 0.5 0.5 0.6 0.6 0.6 0.7 *.sup.)Low values are
desired.
EXAMPLE 10
Stabilization of Polyamide PA6 (1)
[0091] 4000 g of PA6 (Ultramid.RTM.B40, BASF) is cryo-ground and
dried in a vacuum oven at 80.degree. C. for 4 hours. In a MTI M20
FU high-speed mixer the ground polymer is mixed with 12 g of
Irganox.RTM.B 1171 (Blend of 50% of
tris(2,4-di-tert-butylphenyl)phosphite and 50% of
N,N'-hexane-1,6-diyl-bis[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionamid-
e)]) and 10 g of Compound A. The powder mixture is then compounded
on a Berstorff.RTM.ZE 25x32D at 250.degree. C. and after drying in
a Heliomat 2000 6K drier extruded on a Collin.RTM.CR-136/350 film
extrusion line to 50 .mu.m thick films.
[0092] These films are exposed to xenon light in accordance to ASTM
G 155 Cycle 1 (Xe light, 2 borosilicate filters "S", 0.35 W/m2 at
340 nm, 63.degree. C..+-.3.degree. C., 50-60% rel. humidity,
continuous light, 102 minutes dry followed by 18 minutes water
spray). Color is measured in accordance to DIN 6167 (1980-01). The
results are listed in Table 10.
TABLE-US-00011 TABLE 10 hours 0 100 248 500 737 994 YI (Yellowness
Index)*.sup.) 0.1 0.3 0.4 0.5 0.6 0.8 b* (Color coordinate)*.sup.)
0.2 0.3 0.4 0.4 0.4 0.5 *.sup.)Low values are desired.
EXAMPLE 11
Stabilization of Polyamide PA6 (2)
[0093] 4000 g of PA6 (Ultramid.RTM.B40, BASF) is cryo-ground and
dried in a vacuum oven at 80.degree. C. for 4 hours. In a MTI M20
FU high-speed mixer the ground polymer is mixed with 12 g of
Irganox.RTM.B 1171 (Blend of 50% of
tris(2,4-di-tert-butylphenyl)phosphite and 50% of
N,N'-hexane-1,6-diyl-bis[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionamid-
e)]) and 20 g of Compound A. The powder mixture is then compounded
on a Berstorff.RTM.ZE 25x32D at 250.degree. C. and after drying in
a Heliomat 2000 6K drier extruded on a Collin.RTM.CR-136/350 film
extrusion line to 50 .mu.m thick films.
[0094] These films are exposed to xenon light in accordance to ASTM
G 155 Cycle 1 (Xe light, 2 borosilicate filters "S", 0.35 W/m2 at
340 nm, 63.degree. C..+-.3.degree. C., 50-60% rel. humidity,
continuous light, 102 minutes dry followed by 18 minutes water
spray). Color is measured in accordance to DIN 6167 (1980-01). The
results are listed in Table 11.
TABLE-US-00012 TABLE 11 hours 0 100 248 500 737 994 YI (Yellowness
Index)*.sup.) 0.1 0.4 0.3 0.4 0.3 0.6 b* (Color coordinate)*.sup.)
0.2 0.3 0.3 0.3 0.3 0.4 *.sup.)Low values are desired.
EXAMPLE 12
Stabilization of Polyoxymethylene (POM) (1)
[0095] 2500 g of POM (Ultraform.RTM.N2320 003, BASF) is cryo-ground
and dried in a vacuum oven at 80.degree. C. for 4 hours. In a
Mixaco.RTM.Lab CM 12 high-speed mixer the ground polymer is mixed
with 7.5 g of Compound A and 3.75 g of ethylene bis(oxyethylene)
bis-(3-(5-tert-butyl-4-hydroxy-m-tolyl)-propionate)
(Irganox.RTM.245). The powder mixture is then compounded on a
Berstorff.RTM.ZE 25x32D at 190.degree. C. and after drying in a
Heliomat 2000 6K drier injection molded to 2 mm thick plaques on a
Engel HL 65 at 190.degree. C.
[0096] These plaques are exposed to xenon light in accordance to
ASTM G 155 Cycle 1 (Xe light, 2 borosilicate filters "S", 0.35 W/m2
at 340 nm, 63.degree. C..+-.3.degree. C., 50-60% rel. humidity,
continuous light, 102 minutes dry followed by 18 minutes water
spray). Color is measured in accordance to DIN 6167 (1980-01). The
results are listed in Table 12.
TABLE-US-00013 TABLE 12 hours 0 98 262 499 776 YI (Yellowness
Index)*.sup.) 4.4 1.9 3.0 3.5 4.1 b* (Color coordinate)*.sup.) 2.7
1.3 1.9 2.2 2.5 *.sup.)Low values are desired.
EXAMPLE 13
Stabilization of Polyoxymethylene (POM) (2)
[0097] 2500 g of POM (Ultraform.RTM.N2320 003, BASF) is cryo-ground
and dried in a vacuum oven at 80.degree. C. for 4 hours. In a
Mixaco.RTM.Lab CM 12 high-speed mixer the ground polymer is mixed
with 7.5 g of Compound A, 3.75 g of ethylene bis(oxyethylene)
bis-(3-(5-tert-butyl-4-hydroxy-m-tolyl)-propionate)
(Irganox.RTM.245) and 7.5 g of
2-(2H-benzotriazol-2-yl)-4,6-bis(1-methyl-1-phenylethyl)phenol
(Tinuvin.RTM.234). The powder mixture is then compounded on a
Berstorff.RTM.ZE 25x32D at 190.degree. C. and after drying in a
Heliomat 2000 6K drier injection molded to 2 mm thick plaques on a
Engel HL 65 at 190.degree. C.
[0098] These plaques are exposed to xenon light in accordance to
ASTM G 155 Cycle 1 (Xe light, 2 borosilicate filters "S", 0.35 W/m2
at 340 nm, 63.degree. C..+-.3.degree. C., 50-60% rel. humidity,
continuous light, 102 minutes dry followed by 18 minutes water
spray). Color is measured in accordance to DIN 6167 (1980-01). The
results are listed in Table 13.
TABLE-US-00014 TABLE 13 hours 0 98 262 499 776 YI (Yellowness
Index)*.sup.) 7.0 4.1 4.4 4.4 4.6 b* (Color coordinate)*.sup.) 4.2
2.7 2.8 2.8 2.9 *.sup.)Low values are desired.
EXAMPLE 14
Stabilization of an Agricultural Low Density Polyethylene (LDPE)
Film
[0099] LDPE films for agricultural application are prepared as
follows: 100 g of the light stabilizer listed in Tables 14-1 and
14-2, 5 g of Irganox.RTM.B900 (80% of
tris(2,4-di-tert-butylphenyl)phosphite and 20% of
octadecyl-3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate) as
process stabilizer and 895 g of polyethylene powder (Versalis
Riblene.RTM.FF 29, characterized by a density of 0.921 g/cm.sup.3
and a melt flow index (190.degree. C./2.16 Kg) of 0.6 g/10') are
mixed in a turbo-mixer. The masterbatch formulation is extruded at
a maximum temperature of 200.degree. C. in a lab-scale OMC
twin-screw extruder (O 19 mm, L/D=25). A defined aliquot of the
granules so obtained are mixed with 50 g of a polyethylene
masterbatch containing 5% of Irganox.RTM.B900 as process stabilizer
and with an amount of the above described virgin polyethylene in
pellets to get a 10000 g formulation, in a Rhonrad slow mixer for
10 minutes, resulting in the final formulation that contains 0.6%
in total of light stabilizer. Finally this formulation is blown in
a semi-industrial Dolci.RTM.blow-extruder (O 40 mm, L/D=26) at a
maximum temperature of 210.degree. C. to give a 150 .mu.m thick
film.
Artificial Weathering:
[0100] Film specimens from the formulation prepared as described
above are cut and exposed in the Weather-o-Meter (WOM, as per ASTM
G155, dry cycle), for accelerated light weathering. Specimens are
taken at defined intervals of time after exposure and underwent
tensile testing: the residual elongation at break is measured, by
means of a constant velocity tensiometer (as per ISO 527), in order
to evaluate the decay of the mechanical properties of the plastic
film, as a consequence of the polymer degradation. The results of
the evaluations are listed in Table 14-1:
TABLE-US-00015 TABLE 14-1 Time (hours) to 50% of the Light
Stabilizer initial elongation 0.6% of Compound A 5075
[0101] The above table shows an excellent light stabilization
effect of Compound A.
Artificial Weathering Combined with Chemical Treatment (Sulfurous
Acid):
[0102] Film specimens prepared as described above are cut and
dipped into a 0.1 N solution of sulfurous acid for 24 hours. This
simulates the effect of an acidic environment caused by many
agrochemicals.
[0103] After letting the film specimens dry under a fume hood, the
treated films are exposed in the Weather-o-Meter (WOM, as per ASTM
G155, dry cycle), for accelerated light weathering. Specimens of
the formulations are taken at defined intervals of time after
exposure and underwent tensile testing, as described above. The
results of the evaluations are listed in Table 14-2.
TABLE-US-00016 TABLE 14-2 Time (hours) to 50% of the Light
Stabilizer initial elongation 0.6% of Compound A 4040
[0104] The above table shows an excellent light stabilization
effect of Compound A in the presence of agrochemicals.
* * * * *