Patent US4423100A successfully refreshed from Google Patents.
US4423100A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Differentially adhering release coatings for vinyl chloride-containing compositions
Assignee: Armstrong World Industries Inc
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Filing: 1982-06-28
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Granted: 1983-12-27
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Expires: 2002-06-28
Abstract
Abstract The present invention relates to release coatings which comprise cellulosic esters or cellulosic ethers in combination with adhesion-promoting compounds having an affinity for vinyl chloride-containing compositions. The release coatings maintain their adherence characteristics during processing of the structure in which they are disposed, but substantially lose their adherence characteristics when said structure is fused, thereby becoming easily separable from the resulting product.
Inventors
- 👤 Jack H. Witman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:37
CPC Classifications
C; C09; C09J; C09J5/00; C09D; C09D5/00; C09D5/20; Y; Y10; Y10T; Y10T428/00; Y10T428/14; Y10T428/1424; Y10T428/31504; Y10T428/31855; Y10T428/3188; Y10T428/31971
Claims Analysis
Total Claims: 36
Claim 1
Independent Claim
113 words
A process for preparing a fused vinyl chloride-containing structure, said process comprising the steps of providing a carrier with a releasable coating film, said film comprising (a) at least one cellulosic ether or cellulosic ester having a melting point not less than about 220° F., and (b) at least one adhesion-promoting compound having an affinity for polymeric vinyl chloride-containing compositions, adhering a polymeric vinyl chloride-containing composition to the coated carrier, selectively processing and fusing the composite structure, and separating said carrier from the resulting fused polyvinyl chloride-containing composition, said coating film securely bonding said carrier to said composite structure during processing, but substantially losing its bonding capability when said composite structure is fused.
Claim 2
Dependent Claim
113 words
A process for preparing a fused vinyl chloride-containing structure, said process comprising the steps of providing a carrier with a releasable coating film, said film comprising (a) at least one cellulosic ether or cellulosic ester having a melting point not less than about 220° F., and (b) at least one adhesion-promoting compound having an affinity for polymeric vinyl chloride-containing compositions, adhering a polymeric vinyl chloride-containing composition to the coated carrier, selectively processing and fusing the composite structure, and separating said carrier from the resulting fused polyvinyl chloride-containing composition, said coating film securely bonding said carrier to said composite structure during processing, but substantially losing its bonding capability when said composite structure is fused.
Claim 3
Dependent Claim
23 words
The invention as set forth in claim 1 hereof wherein the cellulosic compound has a melting point not less than about 250° F.
Claim 4
Dependent Claim
51 words
The invention as set forth in claim 1 hereof wherein said composition comprises from about 20 to about 95 parts by weight of cellulosic compound and from about 80 to about 5 parts by weight of adhesion-promoting compound, said proportions being based on a total of 100 parts of said compounds.
Claim 5
Dependent Claim
23 words
The invention as set forth in claim 3 hereof wherein said cellulosic compound has a melting point not less than about 250° F.
Claim 6
Dependent Claim
23 words
The invention as set forth in claims 1, 2, 3 or 4 hereof wherein said composition comprises cellulose acetate propionate and polymethyl methacrylate.
Claim 7
Dependent Claim
53 words
The invention as set forth in claim 5 hereof wherein said composition comprises from about 50 to about 94 parts by weight of cellulose acetate propionate and from about 50 to about 6 parts by weight of polymethyl methacrylate, said proportions being based on a total of 100 parts of these major components.
Claim 8
Dependent Claim
39 words
The invention as set forth in claim 6 hereof wherein said composition comprises from about 67 to about 91 parts by weight of cellulose acetate propionate and from about 33 to about 9 parts by weight of polymethyl methacrylate.
Claim 9
Dependent Claim
23 words
The invention as set forth in claims 1, 2, 3 or 4 hereof wherein said composition comprises cellulose acetate propionate and toluenesulfonamide-formaldehyde resin.
Claim 10
Dependent Claim
53 words
The invention as set forth in claim 8 hereof wherein said composition comprises from about 25 to about 85 parts by weight of cellulose acetate propionate and from about 75 to about 15 parts by weight of toluenesulfonamide-formaldehyde resin, said proportions being based on a total of 100 parts of these major components.
Claim 11
Dependent Claim
39 words
The invention as set forth in claim 9 hereof wherein said composition comprises from about 33 to about 80 parts by weight of cellulose acetate propionate and from about 67 to about 20 parts by weight of toluenesulfonamide-formaldehyde resin.
Claim 12
Dependent Claim
22 words
The invention as set forth in claims 1, 2, 3 or 4 hereof wherein the cellulosic compound is an organic cellulosic ester.
Claim 13
Dependent Claim
26 words
The invention as set forth in claim 11 herein wherein said ester is selected from the group consisting of cellulose acetate propionate and cellulose acetate butyrate.
Claim 14
Dependent Claim
22 words
The invention as set forth in claims 1, 2, 3 or 4 hereof wherein the cellulosic compound is an inorganic cellulosic ester.
Claim 15
Dependent Claim
14 words
The invention as set forth in claim 13 hereof wherein said ester is nitrocellulose.
Claim 16
Dependent Claim
21 words
The invention as set forth in claims 1, 2, 3 or 4 hereof wherein said cellulosic compound is a cellulosic ether.
Claim 17
Dependent Claim
22 words
The invention as set forth in claim 15 hereof wherein said ether is selected from the group consisting of ethylcellulose or methylcellulose.
Claim 18
Dependent Claim
55 words
The invention as set forth in claims 1, 2, 3 or 4 hereof wherein said adhesion promoting compound comprises at least one compound selected from the group consisting of polymethyl methacrylate, copolymers of methyl methacrylate and butyl methacrylate, arylsulfonamide-formaldehyde condensates, ortho- and para-toluenesulfonamides, dicyclohexyl phthalate, diphenyl phthalate, polyester resins, maleic acid resins, and polyamide resins.
Claim 19
Dependent Claim
68 words
A composite structure comprising (a) a carrier layer, (b) a polymeric vinyl chloride-containing composition, and (c) a release coating layer disposed therebetween, said release coating layer comprising at least one cellulosic ether or cellulosic ester having a melting point not less than about 220° F. and at least one adhesion-promoting compound having an affinity for said composition, and being capable of differentially bonding said composition to said carrier.
Claim 20
Dependent Claim
68 words
A composite structure comprising (a) a carrier layer, (b) a polymeric vinyl chloride-containing composition, and (c) a release coating layer disposed therebetween, said release coating layer comprising at least one cellulosic ether or cellulosic ester having a melting point not less than about 220° F. and at least one adhesion-promoting compound having an affinity for said composition, and being capable of differentially bonding said composition to said carrier.
Claim 21
Dependent Claim
23 words
The invention as set forth in claim 18 hereof wherein the cellulosic compound has a melting point not less than about 250° F.
Claim 22
Dependent Claim
51 words
The invention as set forth in claim 18 hereof wherein said film comprises from about 20 to about 95 parts by weight of cellulosic compound and from about 80 to about 5 parts by weight of adhesive-promoting compound, said proportions being based on a total of 100 parts of said compounds.
Claim 23
Dependent Claim
23 words
The invention as set forth in claim 20 hereof wherein said cellulosic compound has a melting point not less than about 250° F.
Claim 24
Dependent Claim
23 words
The invention as set forth in claims 18, 19, 20 or 21 hereof wherein said film comprises cellulosic acetate propionate and polymethyl methacrylate.
Claim 25
Dependent Claim
52 words
The invention as set forth in claim 22 hereof wherein said film comprises from about 50 to about 94 parts by weight of cellulose acetate propionate and from about 50 to about 6 parts by weight of polymethyl methacrylate, said proportions being based on a total of 100 parts by these components.
Claim 26
Dependent Claim
39 words
The invention as set forth in claim 23 hereof wherein said film comprises from about 67 to about 91 parts by weight of cellulose acetate propionate and from about 33 to about 9 parts by weight of polymethyl methacrylate.
Claim 27
Dependent Claim
24 words
The invention as set forth in claims 18, 19, 20 or 21 hereof wherein said film comprises cellulose acetate propionate and toluene sulfonamide-formaldehyde resin.
Claim 28
Dependent Claim
53 words
The invention as set forth in claim 25 hereof wherein said film comprises from about 25 to about 85 parts by weight of cellulose acetate propionate and from about 75 to about 15 parts by weight of toluene sulfonamide-formaldehyde resin, said proportions being based on a total of 100 parts by these components.
Claim 29
Dependent Claim
40 words
The invention as set forth in claim 26 hereof wherein said film comprises from about 33 to about 80 parts by weight of cellulose acetate propionate and from about 67 to about 20 parts by weight of toluene sulfonamide-formaldehyde resin.
Claim 30
Dependent Claim
22 words
The invention as set forth in claims 18, 19, 20 or 21 hereof wherein the cellulosic compound is an organic cellulosic ester.
Claim 31
Dependent Claim
26 words
The invention as set forth in claim 28 hereof wherein said ester is selected from the group consisting of cellulose acetate propionate and cellulose acetate butyrate.
Claim 32
Dependent Claim
22 words
The invention as set forth in claims 18, 19, 20 or 21 hereof wherein the cellulosic compound is an inorganic cellulosic ester.
Claim 33
Dependent Claim
14 words
The invention as set forth in claim 30 hereof wherein said ester is nitrocellulose.
Claim 34
Dependent Claim
21 words
The invention as set forth in claims 18, 19, 20 or 21 hereof wherein said cellulosic compound is a cellulosic ether.
Claim 35
Dependent Claim
24 words
The invention as set forth in claim 32 hereof wherein said ether is selected from the group consisting of ethyl cellulose or methyl cellulose.
Claim 36
Dependent Claim
51 words
The invention as set forth in claims 18, 19, 20 or 21 hereof wherein said adhesion-promoting compound comprises at least one compound selected from the group consisting of polymethylmethacrylate, copolymers of methylmethacrylate and butylmethacrylate, arylsulfonamide-formaldehyde condensates, ortho- and para-toluenesulfonamides, dicyclohexyl phthalate, diphenyl phthalate, polyester resins, maleic acid resins, and polyamide resins.
References Cited (Backward Citations)
US2746893A
Cited
US3034915A
Cited
US3017284A
Cited
US3066033A
Cited
US3342686A
Cited
US3300327A
Cited
US3442731A
Cited
US3529049A
Cited
US3556826A
Cited
US3480466A
Cited
US3370025A
Cited
US3429840A
Cited
US3788941A
Cited
US3922464A
Cited
US3959193A
Cited
US4113650A
Cited
JPS5597953A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-12-26 | 1987-06-27 | 1987-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-12-26 | 1991-06-27 | 1991-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-12-26 | 1995-06-27 | 1995-12-27 | $7700.00 | Window Closed / Lapsed |