U.S. patent application number 10/611746 was filed with the patent office on 2004-01-15 for chemical formulations and methods utilizing npb(n-propyl bromide) as non-aqueous carrier mediums to apply fluorocarbons and other organic chemicals to substrates.
Invention is credited to Rising, Larry Ervin.
Application Number | 20040006827 10/611746 |
Document ID | / |
Family ID | 30115690 |
Filed Date | 2004-01-15 |
United States Patent
Application |
20040006827 |
Kind Code |
A1 |
Rising, Larry Ervin |
January 15, 2004 |
Chemical formulations and methods utilizing NPB(n-propyl bromide)
as non-aqueous carrier mediums to apply fluorocarbons and other
organic chemicals to substrates
Abstract
The present invention relates to methods and chemical
formulations utilizing NPB(n-propyl bromide) also called
1-bromopropane or propyl bromide or 1-BP or N-Bromopropane as
non-aqueous carrier mediums to apply fluorocarbons and other
chemicals to substrates, whereby the NPB is evaporated away leaving
the remaining chemicals on the substrate. The present invention
offers formula and method for applying organic chemicals to
substrates that perform superior to current water based technology.
Additional, the invention offers a more economical and
environmental friendly alternative to current chlorinated
hydrocarbons carriers that are being phased out by mandate of the
Environmental Protection Agency (EPA).
Inventors: |
Rising, Larry Ervin;
(Kernersville, NC) |
Correspondence
Address: |
LARRY E. RISING
3820 FIRESTONE RD
KERNERSVILLE
NC
27284
US
|
Family ID: |
30115690 |
Appl. No.: |
10/611746 |
Filed: |
June 30, 2003 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
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60394212 |
Jul 3, 2002 |
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Current U.S.
Class: |
8/115.51 |
Current CPC
Class: |
D06M 15/277 20130101;
Y02P 70/641 20151101; Y02P 70/62 20151101; D06B 9/06 20130101; D06M
13/08 20130101; D06M 2200/11 20130101 |
Class at
Publication: |
8/115.51 |
International
Class: |
D06M 010/00 |
Claims
What is claimed is:
1. Methods and chemical formulations utilizing NPB(n-propyl
bromide) as non-aqueous carrier mediums to apply fluorocarbons and
other chemicals to substrates, whereby the NPB is evaporated away
leaving the remaining chemicals on the substrate.
2. Formula as set forth in claim 1, Fluorine-containing
compositions for oil-, water- and soil-repellant treatment of
substrates, comprising two components A (NPB) and B
(fluorine-containing copolymer) which comprises, based on the total
weight of A, the following weight contents of comonomer (B): 0.002
to 50% by weight of (meth) acrylates containing perfluoroalkyl
groups, of the formulaC.sub.n F.sub.2n+1--X--O--CO--CR.sup-
.1.dbd.CH.sub.2 (I).
3. Formula as set forth in claim 2, whereby treatment of
substrates, comprising two components A (NPB) and B (other
fluoroine-containing compounds) which comprises, based on the total
weight of A, the following weight contents of comonomer (B): 0.002
to 40% by weight of component A
4. Formula as set forth in claim 3, whereby treatment of
substrates, comprising two components A (NPB) and B (Ultraviolet
light inhibitor compound) which comprises, based on the total
weight of A, the following weight contents of comonomer (B): 0.002
to 20% by weight of component A
5. Formula as set forth in claim 4, whereby treatment of
substrates, comprising two components A (NPB) and B (Antistat
compounds) which comprises, based on the total weight of A, the
following weight contents of comonomer (B): 0.002 to 10% by weight
of component A
6. Formula as set forth in claim 5, whereby treatment of
substrates, comprising two components A (NPB) and B (Foaming
compounds) which comprises, based on the total weight of A, the
following weight contents of comonomer (B): 0.002 to 18% by weight
of component A
7. Formula as set forth in claim 6, whereby treatment of
substrates, comprising two components A (NPB) and B (Antibacterial
compound) which comprises, based on the total weight of A, the
following weight contents of comonomer (B): 0.002 to 15% by weight
of component A
8. Formula as set forth in claim 7, whereby treatment of
substrates, comprising two components A (NPB) and B (softening and
hand building compound) which comprises, based on the total weight
of A, the following weight contents of comonomer (B) 0.002 to 20%
by weight of component A
9. Formula as set forth in claim 8, whereby treatment of
substrates, comprising two components A (NPB) and B (resin
compounds) which comprises, based on the total weight of A, the
following weight contents of comonomer (B): 0.002 to 80% by weight
of component A
10. Formula as set forth in claim 9, whereby treatment of
substrates, comprising two components A (NPB) and B (Urethane)
which comprises, based on the total weight of A, the following
weight contents of comonomer (B) 0.002 to 12% by weight of
component A
11. Formula as set forth in claim 10, whereby treatment of
substrates, comprising the single component A(NPB) being used as
scouring agent.
12. A method for applying formulas set forth in claims 2 through 11
with a substrate, comprising the acts of padding; applying the
chemical mixture with the substrate forming a wet substrate; and
removing the non-aqueous solvent from the wet substrate, leaving a
substrate with remaining chemical solution.
13. Method as set forth in claim 12, where by formula set forth in
claims 2 through 11 are foamed onto substrtate.
14. Method as set forth in claim 13, where by formula set forth in
claims 2 through 11 are sprayed onto substrtate.
15. Method as set forth in claim 14, where by formula set forth in
claims 2 through 11 are coated onto substrtate.
Description
BACKGROUND OF THE INVENTION
[0001] NPB (n-propyl bromide) has been used in the metal parts
degreasing industry, particularly in vapor degreasers for years.
Now according to the invention it has been discovered to have a
very useful and desired purpose in other industries. Many
substrates, for example, home textiles, carpets, upholstery acquire
oil-,water- and soil-repellant properties by treatment with
fluorocarbons.
[0002] These chemicals are now applied to substrates with water
based (aqueous) carriers requiring other auxiliary chemicals i.e.:
emulsifiers and dispersing agents to keep organics in suspension.
These auxiliary chemicals needed for aqueous application often
lesson the intended benefit of the applied chemical to the
substrate. These aqueous carriers require high temperatures and
expensive drying systems to evaporate the water. Chlorinated
hydrocarbons have been used in the past as carrier mediums to apply
organic chemicals to substrates when an aqueous carrier could not
be used. Chlorinated hydrocarbons are being phased out by mandate
of the Environmental Protection Agency (EPA).
BRIEF SUMMERY OF THE INVENTION
[0003] By this invention, NPB has shown an excellent alternative to
current aqueous and chlorinated hydrocarbons as a carrier medium
for application of organics to substrates. NPB is non-regulated,
non-toxic and has no ozone pollution properties. NPB is economical
and environmentally friendly.
[0004] After extensive study, it has been found that the use of NPB
as a carrier dramatically improves the performances and durability
of benefits achieved by application of organics to substrate and
that this invention is superior to current methods and
chemistry.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0005] The invention relates to methods and formulations to provide
substrates with treatment to include oil and water repellant
treatment, for example; the treatment of home textiles and apparel,
which achieve desired effects with significantly smaller amounts of
expensive fluorocarbon compounds as Compared to available current
technology, as illustrated in Example 2 Compared to Example 4.
[0006] The following description, taken in conjunction with the
referenced examples, is presented to enable one of ordinary skill
in the art to make and use the invention. Various modifications
will be readily apparent to those Skilled in the art, and the
general principles defined herein may be applied to a wide range of
aspects. Thus, the present invention is not intended to be limited
to the aspects presented, but is to be accorded the widest scope
consistent with the principles and novel features disclosed herein.
Furthermore, the compositions according to the invention should
furthermore impart to the substrates, in particular the home
textiles, water-repellant actions that meet increased requirements.
Another object comprises providing treatment compositions with
which the heat treatment can be carried out at the lowest
temperature or, preferably, no heat treatment is necessary (Example
3).
[0007] In one aspect, invention relates to substrates from the
group consisting of naturally occurring and synthetic textiles and
their mixtures, leather, mineral substances, thermoplastic and
thermosetting polymers and paper, which are treated with
fluorine-containing compositions of the type mentioned below in an
amount of 10 to 10,000 ppm, preferably 50 to 5,000 ppm,
particularly preferably 100 to 2,000 ppm, calculated as fluorine
and based on the total weight of substrates provided with an oil-,
water- and soil-repellant treatment.
[0008] In another aspect, other textile auxiliary chemicals can be
added during preparation of the treatment formula as according to
the invention, or subsequently. Such additives are crease-proofing
and soft handle agents, melamine, flame retardant, oleophobizing
agents, hydrophobizing agents, Urethane, finishing agents,
extenders for textile auxiliaries and others.
[0009] Substrates which are suitable for imparting oil-, water- and
soil-repellant properties according to the invention are: linen,
cotton, wool, silk, jute, polyamide, polyester, polyacrylonitrile
and mixtures thereof, leather, stone slabs, floor tiles, glazed
tiles, roof tiles, glass, ground surfaces of silicon, foils and
films and compact workpieces of polyolefins, polyesters,
polyamides, polycarbonates, polyurethane, polyacetals, polyethers,
polysulphides, polysulphones, polyamides and other thermoplastics,
as well as of phenol/formaldehyde resins, urea/formaldehyde resins,
melamine/formaldehyde resins and other thermosetting resins, paper
and paper-like materials, such as paperboard. Preferred base
substrates are home textiles based on naturally occurring and
synthetic textiles and their mixtures, which are employed, for
example, as carpets, curtains, decorative materials or coverings
for upholstered furniture.
[0010] Processes for the treatment of such base substrates and
therefore for application of the fluorine-containing compositions
according to the invention are known to the expert and are, for
example, foaming, dipping or spraying of the base substrates; the
compositions according to the invention furthermore can be employed
during the production of the base substrates, for example the
pulp.
[0011] Textiles as base substrates, preferably home textiles and
apparel can be treated, for example, in the padding, spraying or
foaming process. The padder consists of a liquor trough (chassis)
and at least one pair of rubber rolls (Example 2). The textiles to
be treated are impregnated with the treatment liquor in the chassis
and squeezed off between the rolls; the liquor runs back into the
chassis. It is very important that a uniform liquor pick-up is
achieved over the entire width of the goods during
squeezing-off.
[0012] In the padding process, the liquor pick-up is stated in
percentage of the weight of goods, and for normal textile
constructions can be between 30 and 300%, depending on the quality
of the goods and the padder pressure used.
[0013] In the spraying process, (Example 3) the textile is sprayed
with the treatment liquor. The treatment liquor is finely divided
by nozzles and applied uniformly. An amount of treatment liquor
precisely defined beforehand is applied to one square meter of
textile goods.
[0014] In the foaming process, the treatment liquor is continuously
foamed mechanically in a commercially available mixer with out the
addition of a foaming agent. The foam is produced in the mixing
head by mixing the liquor with air. The foam, which emerges, is
conveyed via a foam line to a discharge slot in the applicator. The
goods are pressed against the slot and taken off via a separate
unit, for example a stenter frame. In example 1, a concentration of
98% NPB and 2% Perfluoroalkyl polyacrylate were used. The
experiments were carried out on the Gaston Systems, Inc. Foam
Applicator, Stanly, N.C.
[0015] By the invention, it has been discovered surprisingly that a
mixture of NPB and Perfluoroalkyl polyacrylate can be foamed with
or without the aid of a foaming agent (Example 1). Not using
foaming agents greatly improves the benefit of the applied fluorine
composition to the substrate and reduces the amount of compound
added to fabric to achieve water and oil repellency.
[0016] In another aspect, this invention involves the surprising
discovery that the use of NPB applied in 100% concentration via
dipping and squeezing with pressure rollers (Padding) and the NPB
being evaporated away imparts a much improved softness and luster
to textile substrates, especially home furnishing, apparel fabrics
and upholstery fabrics.
[0017] After the treatment, the textiles, preferably home textiles,
are dried, it being possible to use temperatures of 120.degree. to
170.degree. C. to achieve the desired treatment effect according to
the known procedure. However, good oil-, water- and soil-repellant
treatments can also be obtained with the new compositions according
to the invention at significantly lower drying temperatures, for
example at 25.degree. C. (Example 3).
[0018] Samples of the materials thus pretreated were taken for
testing of the following effects:
[0019] Oil-repellency (according to AATCC 118-1972): The test
sample is placed on a horizontal, smooth surface, a small drop
(drop diameter about 5 mm) of he test liquids is applied to the
test sample with the aid of a dropping pipette, In addition, the
sample is evaluated as specified.
[0020] The AATCC oil-repellency level of a test fabric is the
highest number of that test liquid which does not wet or penetrate
into the test material within a time span of 30 seconds. The test
liquids and mixtures for the test method are: No. 1: Nujol or
paraffin oil DAB 8; No. 2: 65% by volume of Nujol and 35% by volume
of n-hexadecane; No. 3: n-hexadecane; No. 4: n-tetradecane; No. 5:
n-dodecane; No. 6: n-decane; No. 7: n-octane; No. 8: n-heptane.
[0021] Repellency towards a water/alcohol mixture (hydrophobicity):
Drops of water/isopropanol mixtures (ratio 90/10 to 10/90) are
applied to the test sample. The test result corresponds to the
mixture with the highest isopropanol content which remains on the
test sample in unchanged form for at least 20 seconds (the value
80/20, for example, is better than 20/80).
EXAMPLES
[0022] Compositions which are not according to the invention
(Example 4) and which represent the prior art are the following:
Nuva HPU (Clariant Corporation). Scotchgard.RTM. FC 396 (3M Comp.)
according to DE-A 2 149 292 Baygard.RTM. SF-A. (Bayer AG) according
to DE-A 3 307 420 and Zonyl (E. I. Dupont)
[0023] The compositions according to the invention (Examples 1, 2
& 3) are non-aqueous solutions contents of which comprise a
mixture of NPB (component A) and one or more poly (meth) acrylates
(component B).
Use of the Compositions According to the Invention
Example 1
[0024] A solution of 98% NPB and 2% Perfluoroalkyl polyacrylate
were mixed and applied to the foam generator which imparts the
solution to a high speed mixer that generates the solution into
foam. The foam was then dispensed to the substrates listed in below
via an applicator at 30%-wet pickup. The substrates were then dried
at 170 deg C. for 1-minute dwell time with the following
results:
1 Initial After 10 Home Laundries Example 1 Oil IPA Spray Fluoride
Oil IPA Spray Fluoride Cotton 5 85 100 2160 ppm 2 60 70 1600 ppm
Polyester 6 90 100 1170 ppm 5 90 90 980 ppm Pes/Rayon 6 80 100 5 60
70
Example 2
[0025] A solution of 99.6% NPB and 0.4% Perfluoroalkyl polyacrylate
were mixed and applied to the substrates listed below via a pad
applicator at 3.5 bars pressure. The solution was applied at noted
wet pickup. Again, the substrates were dried at 170 deg C. with a
1-minute dwell.
2 Initial After 10 Home Laundries Example 2 Oil IPA Spray Fluoride
Oil IPA Spray Fluoride Cotton 6 100 100 2480 ppm 3 90 80 2200 ppm
Polyester 8 90 100 1270 ppm 6 90 90 1100 ppm Pes/Rayon 8 80 100 6
80 80
Example 3
[0026] A solution of 99.6% NPB and 2% Perfluoroalkyl polyacrylate
were mixed and applied to the substrates listed below via a Spray
at 1.5 bars pressure. The solution was applied at noted wet pickup.
Again, the substrates were dried at 170 deg C. with a 1-minute
dwell.
3 Initial After 10 Home Laundries Example 3 Oil IPA Spray Fluoride
Oil IPA Spray Fluoride Cotton 6 85 100 2260 ppm 2 60 70 1690 ppm
Polyester 6 90 100 1170 ppm 5 90 90 1080 ppm Pes/Rayon 6 80 100 5
60 70
Use of the Compositions Not According to the Invention
Example 4
[0027] An aqueous Perfluoroalkyl polyacrylate dispersion using Nuva
HPU at 2% concentration was prepared and applied via a padding
applicator at 3.5 bars pressure. The solution was applied at noted
wet pickup. Again, the substrates were dried at 170 deg C. with a
1-minute dwell.
4 Initial After 10 H me Laundries Example 4 Oil IPA Spray Fluoride
Oil IPA Spray Fluoride Cotton 7 100 100 2460 7 90 80 2210 ppm ppm
Polyester 6 60 100 1270 4-5 45-50 90 1100 ppm ppm Pes/Rayon 5 60
100 2 35-40 70
[0028] In all examples, the substrates used were (1) White
Polyester 8 oz/sq yd (PES), (2) 100% Cotton interlock and (3) 60/40
PES and Rayon Blend.
* * * * *