U.S. patent application number 12/693855 was filed with the patent office on 2010-07-29 for packaging body.
This patent application is currently assigned to SUMITOMO CHEMICAL COMPANY, LIMITED. Invention is credited to Natsuko SATO.
Application Number | 20100187151 12/693855 |
Document ID | / |
Family ID | 42173519 |
Filed Date | 2010-07-29 |
United States Patent
Application |
20100187151 |
Kind Code |
A1 |
SATO; Natsuko |
July 29, 2010 |
PACKAGING BODY
Abstract
A packaging body comprising a bag body filled with a compound of
the following formula (1) and further filled with an inert gas so
as to occupy 80 vol % or more with respect to the total capacity of
an internal space formed by the bag body. ##STR00001##
Inventors: |
SATO; Natsuko; (Osaka,
JP) |
Correspondence
Address: |
BIRCH STEWART KOLASCH & BIRCH
PO BOX 747
FALLS CHURCH
VA
22040-0747
US
|
Assignee: |
SUMITOMO CHEMICAL COMPANY,
LIMITED
Tokyo
JP
|
Family ID: |
42173519 |
Appl. No.: |
12/693855 |
Filed: |
January 26, 2010 |
Current U.S.
Class: |
206/524.1 ;
206/524.4; 206/524.6; 53/402; 53/403; 53/469 |
Current CPC
Class: |
B65D 81/24 20130101;
C08K 5/134 20130101; B65D 81/2084 20130101 |
Class at
Publication: |
206/524.1 ;
206/524.4; 206/524.6; 53/402; 53/403; 53/469 |
International
Class: |
B65D 81/20 20060101
B65D081/20; B65B 31/02 20060101 B65B031/02; B65D 30/02 20060101
B65D030/02; B65D 81/24 20060101 B65D081/24 |
Foreign Application Data
Date |
Code |
Application Number |
Jan 29, 2009 |
JP |
2009-017861 |
Claims
1. A packaging body comprising a bag body filled with a compound of
the following formula (1) and further filled with an inert gas so
as to occupy 80 vol % or more with respect to the total capacity of
an internal space formed by the bag body: ##STR00004## (in the
formula (1), R.sup.1 and R.sup.2 represent each independently an
alkyl group having 1 to 8 carbon atoms or cycloalkyl group having 5
to 8 carbon atoms, R.sup.3 represents a hydrogen atom or methyl
group, and X represents a single bond, sulfur atom, oxygen atom,
alkylidene group having 1 to 8 carbon atoms or cycloalkylidene
group having 5 to 8 carbon atoms.).
2. The packaging body according to claim 1 wherein the bag body is
made of a gas barrier wrapping material.
3. The packaging body according to claim 2 wherein the gas barrier
wrapping material has an oxygen transmission rate of 200
[cm.sup.325.mu.mm.sup.-2day.sup.-1atm.sup.-1] or less.
4. The packaging body according to claim 1 wherein the compound of
the formula (1) is
2,4-di-t-amyl-6-[1-(3,5-di-t-amyl-2-hydroxyphenyl)ethyl]phenyl
acrylate or
2-t-butyl-6-(3-t-butyl-2-hydroxy-5-methylbenzyl)-4-methylphenyl
acrylate.
5. A method of producing a packaging body, comprising a filling
step of filling a bag body with a compound of the following formula
(1), an introduction step of further introducing an inert gas into
the bag body so that the gas occupies 80 vol % or more with respect
to the total capacity of an internal space formed by the bag body:
and a sealing step of sealing the bag body obtained via the filling
step and the introduction step: ##STR00005## (in the formula (1),
R.sup.1 and R.sup.2 represent each independently an alkyl group
having 1 to 8 carbon atoms or cycloalkyl group having 5 to 8 carbon
atoms, R.sup.3 represents a hydrogen atom or methyl group, and X
represents a single bond, sulfur atom, oxygen atom, alkylidene
group having 1 to 8 carbon atoms or cycloalkylidene group having 5
to 8 carbon atoms.).
Description
TECHNICAL FIELD
[0001] The present invention relates to a packaging body, and the
like.
BACKGROUND ART
[0002] For improving the processing stability of a thermoplastic
polymer composition, it is known, for example, to blend a compound
such as
2-t-butyl-6-(3-t-butyl-2-hydroxy-5-methylbenzyl)-4-methylphenyl
acrylate and the like into a thermoplastic polymer (patent document
1).
(patent document 1) JP-A No. 62-18445
DISCLOSURE OF THE INVENTION
[0003] It was desired to develop a technology for further improving
the processing stability of a thermoplastic polymer
composition.
[0004] Under such conditions, the present inventors have
investigated and resultantly completed the present invention
described below.
[0005] That is, the present invention provides the following [1] to
[5].
[0006] [1] A packaging body comprising a bag body filled with a
compound of the following formula (1) and further filled with an
inert gas so as to occupy 80 vol % or more with respect to the
total capacity of an internal space formed by the bag body:
##STR00002##
(in the formula (1), R.sup.1 and R.sup.2 represent each
independently an alkyl group having 1 to 8 carbon atoms or
cycloalkyl group having 5 to 8 carbon atoms, R.sup.3 represents a
hydrogen atom or methyl group, and X represents a single bond,
sulfur atom, oxygen atom, alkylidene group having 1 to 8 carbon
atoms or cycloalkylidene group having 5 to 8 carbon atoms.).
[0007] [2] The packaging body according to [1] wherein the bag body
is made of a gas barrier wrapping material.
[0008] [3] The packaging body according to [2] wherein the gas
barrier wrapping material has an oxygen transmission rate of 200
[cm.sup.325 .mu.mm.sup.-2day.sup.-1atm.sup.-1] or less.
[0009] [4] The packaging body according to any one of [1] to [3]
wherein the compound of the formula (1) is 2,4-di-t-amyl-6-[1-
(3,5-di-t-amyl-2-hydroxyphenyl)ethyl]phenyl acrylate or
2-t-butyl-6-(3-t-butyl-2-hydroxy-5-methylbenzyl)-4-methylphenyl
acrylate.
[0010] [5] A method of producing a packaging body, comprising a
filling step of filling a bag body with a compound of the following
formula (1),
[0011] an introduction step of further introducing an inert gas
into the bag body so that the gas occupies 80 vol % or more with
respect to the total capacity of an internal space formed by the
bag body: and
[0012] a sealing step of sealing the bag body obtained via the
filling step and the introduction step:
##STR00003##
(in the formula (1), R.sup.1 and R.sup.2 represent each
independently an alkyl group having 1 to 8 carbon atoms or
cycloalkyl group having 5 to 8 carbon atoms, R.sup.3 represents a
hydrogen atom or methyl group, and X represents a single bond,
sulfur atom, oxygen atom, alkylidene group having 1 to 8 carbon
atoms or cycloalkylidene group having 5 to 8 carbon atoms.)
MODES FOR CARRYING OUT THE INVENTION
[0013] The present invention will be described in detail below.
[0014] The compound used in the packaging body of the present
invention (hereinafter, described as the present packaging body in
some cases) is a compound of the above-described formula (1)
(hereinafter, described as compound (1) in some cases).
[0015] In the compound (1), R.sup.1 and R.sup.2 represent each
independently an alkyl group having 1 to 8 carbon atoms or
cycloalkyl group having 5 to 8 carbon atoms.
[0016] Examples of the alkyl group include a methyl group, ethyl
group, n-propyl group, i-propyl group, n-butyl group, i-butyl
group, t-butyl group, n-pentyl group, i-pentyl group, t-pentyl
group, 2-ethylhexyl group and the like, and examples of the
cycloalkyl group include a cyclopentyl group, cyclohexyl group,
cyclooctyl group, 3-methylcyclopentyl group, 4-methylcyclopentyl
group, 3-methylcyclohexyl group and the like, and tertiary alkyl
groups such as a t-butyl group and t-pentyl group and the like are
preferable and a t-pentyl group is more preferable.
[0017] In the formula (1), R.sup.3 represents a hydrogen atom or
methyl group, and a hydrogen atom is preferable.
[0018] In the formula (1), X represents a single bond; a sulfur
atom; an oxygen atom; an alkylidene group having 1 to 8 carbon
atoms such as a methylene group, ethylidene group, propylidene
group, butylidene group and the like; or a cycloalkylidene group
having 5 to 8 carbon atoms such as a cyclopentylidene group,
cyclohexylidene group and the like.
[0019] Examples of the compound (1) include [0020]
2-[1-(2-hydroxy-3,5-di-t-pentylphenyl)ethyl]-4,6-di-t-pentylphenyl
acrylate, [0021]
2-t-butyl-6-(3-t-butyl-2-hydroxy-5-methylbenzyl)-4-methylphenyl
acrylate, [0022]
2,4-di-t-butyl-6-[1-(3,5-di-t-butyl-2-hydroxyphenyl)ethyl]phenyl
acrylate, [0023]
2-t-butyl-6-[1-(3-t-butyl-2-hydroxy-5-methylphenyl)ethyl]-4-methylphenyl
acrylate, [0024]
2-t-butyl-6-[1-(3-t-butyl-2-hydroxy-5-methylphenyl)propyl]-4-methylphenyl
acrylate, [0025]
2-t-butyl-6-[1-(3-t-butyl-2-hydroxy-5-propylphenyl)ethyl]-4-propylphenyl
acrylate, [0026]
2-t-butyl-6-[1-(3-t-butyl-2-hydroxy-5-isopropylphenyl)ethyl]-4-isopropylp-
henyl acrylate and the like, preferably, [0027]
2-[1-(2-hydroxy-3,5-di-t-pentylphenyl)ethyl]-4,6-di-t-pentyphenyl
acrylate or [0028]
2-t-butyl-6-(3-t-butyl-2-hydroxy-5-methylbenzyl)-4-methylphenyl
acrylate.
[0029] As the wrapping material constituting the bag body, cloth,
paper, leather, hemp, resin, metal and the like are listed, and gas
barrier wrapping materials are preferable.
[0030] As the gas barrier wrapping material, wrapping materials are
mentioned having an oxygen transmission rate of preferably 200
[cm.sup.325 .mu.mm.sup.-2day.sup.-1atm.sup.-1] or less, more
preferably 100 [cm.sup.325 .mu.mm.sup.-2day.sup.-1atm.sup.-] or
less, further preferably 50 [cm.sup.325
.mu.mm.sup.-2day.sup.-1atm.sup.-1] or less.
[0031] Examples of the material of the wrapping material include
plastic films such as a polyvinyl alcohol film, polyamide film,
polyacrylonitrile film, polyethylene terephthalate film, nylon
film, moisture-proof cellophane film, polyvinylidene chloride film
and the like; copolymerized polyolefin copolymer films such as a
vinyl chloride-propylene copolymerized plastic film, ethylene-vinyl
alcohol copolymerized plastic film and the like; and composite
films thereof, and the like.
[0032] As the material of the gas barrier wrapping material, there
can be used laminate films obtained by vapor-depositing a metal
such as aluminum and the like onto an oxygen transmissible film
such as a polyethylene film, polyethylene terephthalate and the
like so as to give an oxygen transmission rate of 200 [cm.sup.325
.mu.mm.sup.-2day.sup.-1atm.sup.-1] or less, and also laminate films
obtained by further vapor-depositing a metal such as aluminum and
the like onto a film already having an oxygen transmission rate of
200 [cm.sup.325 .mu.mm.sup.-2day.sup.-1atm.sup.-1] or less.
[0033] As the material of the gas barrier wrapping material,
laminate films vapor-deposited with aluminum are preferable and
laminate films obtained by vapor-deposing a metal such as aluminum
and the like onto an oxygen transmissible film are more
preferable.
[0034] The present packaging body is obtained by filling a bag body
with a compound (1).
[0035] As the above-described bag body, for example, a paper
wrapping material may be sealed by suturing with a thread and the
like to obtain a bag body, or a gas barrier wrapping material may
be sealed by thermal compression bond and the like to obtain a bag
body.
[0036] An inert gas is further filled so as to occupy 80 vol % or
more with respect to the total capacity of an internal space formed
by the bag body. The capacity occupied by the inert gas is
preferably 83 vol % or more, more preferably 90 vol % or more.
[0037] Here, the phrase "with respect to the total capacity of an
internal space formed by the bag body" means a volume capacity of a
transient or permanent space formed insulating from an outer space
by the gas barrier wrapping material forming the bag body
irrespective of sealing or non-sealing.
[0038] Examples of the inert gas include rare gases such as helium,
argon and the like; nitrogen, carbon dioxide, and the like.
Preferable is nitrogen or argon, and more preferable is
nitrogen.
[0039] As the method of producing the present packaging body, for
example, a production method comprising a filling step of filling a
bag body with a compound (1), an introduction step of further
introducing an inert gas into the bag body so that the gas occupies
80 vol % or more with respect to the total capacity of an internal
space formed by the bag body, and a sealing step of sealing the bag
body obtained via the filling step and the introduction step, and
other methods are mentioned.
[0040] Other two steps than the sealing step, that is, the filling
step and the introduction step may be carried out in any order, and
it may be advantageous that the filling step and the introduction
step are carried out in any order before conducting the sealing
step.
[0041] Specifically mentioned are
[0042] a method in which a filling step of filling a bag body with
a compound (1) is carried out, then, an introduction step of
introducing an inert gas so as to occupy 80 vol % or more with
respect to the total capacity of an internal space formed by the
bag body obtained in the filling step is carried out, and the bag
body obtained in the introduction step is sealed;
[0043] a method in which an introduction step of introducing an
inert gas so as to occupy 80 vol % or more with respect to the
total capacity of an internal space formed by the bag body is
carried out in a place substituted with an inert gas of 80 vol % or
more, a filling step of filling the bag body obtained in the
introduction step with a compound (1) is carried out in a place
substituted with an inert gas of 80 vol % or more;
[0044] and other methods.
[0045] Examples of the sealing method to be used in the sealing
step include a method of performing thermal compression bond, a
method of sealing with a zipper, chuck or the like, a method of
suturing with a thread or the like, and other methods.
[0046] A thermoplastic polymer composition prepared by removing a
compound (1) from the packaging body of the present invention,
then, blending this compound (1) into a thermoplastic polymer
without leaving for a long period of time is excellent in
processing stability and has a coloration suppressing effect.
[0047] Such a thermoplastic polymer is not particularly restricted
providing it is a commercially available thermoplastic polymer, and
thermoplastic polymers obtained by solution polymerization are
preferable. Of them, polypropylene resins such as an
ethylene-propylene copolymer and the like; polyethylene resins
(high density polyethylene(HD-PE), low density polyethylene(LD-PE),
linear low density polyethylene(LLDPE) and the like), methylpentene
polymer, ethylene-ethyl acrylate copolymer, ethylene-vinyl acetate
copolymer, polystyrenes (polystyrene such as poly(p-methylstyrene),
poly(a-methylstyrene) or the like, and acrylonitrile-styrene
copolymer, acrylonitrile-butadiene-styrene copolymer, special acryl
rubber-acrylonitrile-styrene copolymer, acrylonitrile-chlorinated
polyethylene-styrene copolymer, styrene-butadiene copolymer and the
like), chlorinated polyethylene, polychloroprene, chlorinated
rubber, polyvinyl chloride, polyvinylidene chloride, methacrylic
resin, ethylene-vinyl alcohol copolymer, fluorine resin,
polyacetal, grafted polyphenylene ether resin, polyphenylene
sulfide resin, polyurethane, polyamide, polyester resins (for
example, polyethylene terephthalate, polybutylene terephthalate and
the like), polycarbonate, polyacrylate, polysulfone, polyether
ether ketone, polyether sulfone, aromatic polyester resin, diallyl
phthalate prepolymer, silicone resin, 1,2-polybutadiene,
polyisoprene, butadiene/acrylonitrile copolymer, ethylene-methyl
methacrylate copolymer and the like are mentioned, and
particularly, preferable from the standpoint of good molding
processability are polyethylene resins, polypropylene resins and
polystyrenes, and especially, polypropylene resins,
acrylonitrile-butadiene-styrene copolymer and styrene-butadiene
copolymer are more preferable.
[0048] The addition amount of the compound (1) is preferably 0.01
to 5 parts by weight, more preferably 0.02 to 2 parts by weight,
further preferably 0.05 to 1 part by weight, still further
preferably 0.1 to 0.6 parts by weight with respect to 100 parts by
weight of a thermoplastic polymer.
[0049] The above-described thermoplastic polymer composition is
suitable for, for example, food packaging containers, daily use
miscellaneous goods, electronic and electric parts and materials,
parts and materials of transport machines such as automobile and
the like, etc.
[0050] A thermoplastic polymer composition prepared by removing a
compound of the formula (1) preserved in the present packaging body
from the packaging body, then, blending this compound (1) into a
thermoplastic polymer without leaving for a long period of time is
excellent in processing stability and has a coloration suppressing
effect.
Examples
[0051] The present invention will be described in detail by
examples and reference examples mentioned below, but the present
invention is not limited to them. Parts and % are by weight unless
otherwise stated.
Example 1
<Fabrication of Packaging Body>
[0052] In a glove box previously adjusted to nitrogen gas 83 vol %
and oxygen gas 17 vol %, 12 g of
2,4-di-t-amyl-6-[1-(3,5-di-t-amyl-2-hydroxyphenyl)ethyl]phenyl
acrylate (Sumilizer GS(F), registered trademark, manufactured by
Sumitomo Chemical Co., Ltd.) was filled in a bag body with chuck
(115 mm.times.90 mm, Seisannipponsha Ltd., Lamizip AL-9) made of a
gas barrier wrapping material (oxygen transmission rate: 0.1 to 1
[cm.sup.325 .mu.mm.sup.-2day.sup.-1atm.sup.-1]) composed of
polyethylene terephthalate (outer layer)/aluminum vapor deposited
layer/polyethylene (inner layer), then, the chuck was hermetically
closed to obtain a packaging body.
<Preservation>
[0053] The packaging body obtained above was preserved in a
ventilation constant temperature oven at 50.degree. C. for 1
month.
<Coloring Property Test>
[0054] The above-described compound was removed from the packaging
body after preservation described above, and 0.5 parts of the
removed compound and 100 parts of a propylene-ethylene block
copolymer (MI(230.degree. C., load: 2.16 kg): 3 g/10 min.,
manufactured by Sumitomo Chemical Co., Ltd.) were dry-blended,
then, the resultant blend was kneaded using a 30 mm.phi. single
screw extruder (Tanabe Plastics Machinery Co., Ltd., VS30-28 type
extruder) under conditions of 230.degree. C. and a screw revolution
of 50 rpm, to obtain pellets of a thermoplastic polymer
composition.
[0055] The resultant pellets were subjected to measurement of
Yellowness Index (YI) using a colorimeter (CM-3500d, manufactured
by Konica Minolta Holdings, Inc.) according to JIS K7105, to obtain
a value of -6.07. Smaller the YI value, weaker the coloration.
<Processing Stability>
[0056] The pellets obtained in <Coloring property test> were
subjected to measurement of melt flow rate (MFR, 280.degree. C.,
load: 2.16 kg) using Melt Indexer (L217-E14011, manufactured by
TechnoSeven Co., Ltd.), to obtain a value of 9.91. Smaller the MFR
value, more excellent the processing stability.
Examples 2 to 4, Reference Example 1
[0057] Thermoplastic polymer compositions were produced according
to the same method as in Example 1 excepting that the content of a
nitrogen gas in the glove box was changed as described in Table 1,
and the performances of the resultant thermoplastic polymer
compositions were evaluated. These results are shown in Table 1
together with those of Example 1.
[0058] For "improvement rate", the above-described compound allowed
to stand still on a petri dish without being filled in a bag body
was preserved in a ventilation constant temperature oven at
50.degree. C. for 1 month and the resultant reference substance was
subjected to the coloring property test and the processing
stability test according to the same procedure as in Example 1
(hereinafter, described as Reference Example 1 in some cases), and
the improvement rate was calculated based on the obtained results.
In Example 1, the improvement rate of the coloring property test
was:
{-6.01-(-5.39)}/(-5.39).times.100=12 (%)
since YI in Reference Example 1 was -5.39 and the improvement rate
of the processing stability was:
(10.82-10.08)/10.82.times.100=6.8 (%)
since MFR in Reference Example 1 was 10.82.
TABLE-US-00001 TABLE 1 nitrogen YI MFR content improvement
improvement (vol %)*.sup.1 YI rate(%) MFR rate(%) Example 1 83
-6.07 13 9.91 8.4 Example 2 90 -6.09 13 9.80 9.4 Example 3 96 -6.26
16 9.79 9.5 Example 4 100 -6.50 21 9.73 10.1 Reference 79 -5.39 0
10.82 0 Example 1 *.sup.1Capacity ratio of an inert gas occupying
with respect to the total capacity of an internal space formed by
the bag body
Example 5
[0059] Under an air atmosphere, 12 g of
2,4-di-t-amyl-6-[1-(3,5-di-t-amyl-2-hydroxyphenyl)ethyl]phenyl
acrylate (Sumilizer GS(F), registered trademark, manufactured by
Sumitomo Chemical Co., Ltd.) was filled in a bag body with chuck
(115 mm.times.90 mm, Seisannipponsha Ltd., Lamizip AL-9) made of a
gas barrier wrapping material (oxygen transmission rate: 0.1 to 1
[cm.sup.325 .mu.mm.sup.-2day.sup.-1atm.sup.-1]) composed of
polyethylene terephthalate (outer layer)/aluminum vapor deposited
layer/polyethylene (inner layer), then, a nitrogen gas was
introduced into the resultant bag body for about 1 minute from a
nitrogen cylinder of which pressure had been controlled to 1
kg/cm.sup.2 (9.8 Pa), then, the chuck was hermetically closed to
obtain a packaging body.
INDUSTRIAL APPLICABILITY
[0060] A thermoplastic polymer composition prepared by removing a
compound of the formula (1) preserved in the present packaging body
from the packaging body, then, blending this compound (1) into a
thermoplastic polymer without leaving for a long period of time is
excellent in processing stability and has a coloration suppressing
effect.
* * * * *