US3930865A
Expired / Lapsed
US
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Photopolymerizable copying composition
Assignee: Hoechst AG
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Filing: 1974-12-18
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Granted: 1976-01-06
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Expires: 1994-12-18
Abstract
Abstract The invention relates to a photopolymerizable copying composition comprising at least one polymerizable compound, at least one photo-initiator, and at least one copolymer of (A) an unsaturated carboxylic acid, (B) an alkyl methacrylate with at least 4 carbon atoms in the alkyl group, and (C) at least one additional monomer which is capable of copolymerization with monomers (A) and (B), the homopolymer of said additional monomer having a glass transition temperature of at least 80°C.
Inventors
- 👤 Raimund Josef Faust
- 👤 Kurt Walter Klupfel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:34
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/027; G03F7/032; G03F7/033; Y; Y10; Y10S; Y10S430/00; Y10S430/1053; Y10S430/1055; Y10S430/106; Y10S430/108; Y10S430/111
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
71 words
A photopolymerizable copying composition comprising at least one polymerizable compound, at least one photo-initiator, and at least one copolymer of A. an unsaturated carboxylic acid, B. an alkyl methacrylate with at least 4 carbon atoms in the alkyl group, and C. at least one additional monomer which is capable of copolymerization with monomers (A) and (B), the homopolymer of said additional monomer having a glass transition temperature of at least 80°C.
Claim 2
Dependent Claim
71 words
A photopolymerizable copying composition comprising at least one polymerizable compound, at least one photo-initiator, and at least one copolymer of A. an unsaturated carboxylic acid, B. an alkyl methacrylate with at least 4 carbon atoms in the alkyl group, and C. at least one additional monomer which is capable of copolymerization with monomers (A) and (B), the homopolymer of said additional monomer having a glass transition temperature of at least 80°C.
Claim 3
Dependent Claim
28 words
A copying composition according to claim 1 which comprises methacrylic acid, acrylic acid, crotonic acid, sorbic acid, maleic or itaconic acid, or the half-esters thereof, as monomer (A).
Claim 4
Dependent Claim
17 words
A copying composition according to claim 2 which comprises methacrylic acid as the unsaturated carboxylic acid (A).
Claim 5
Dependent Claim
24 words
A copying composition according to claim 1 in which the alkyl methacrylate (B) has from 4 to 20 carbon atoms in the alkyl group.
Claim 6
Dependent Claim
34 words
A copying composition according to claim 1 which comprises styrene, p-chlorostyrene, vinyl toluene, vinyl naphthalene, vinyl carbazole, vinyl cyclohexane, acrylamide, methacrylamide, N-alkyl-acrylamide, phenyl methacrylate, acrylonitrile, methacrylonitrile, or benzyl methacrylate as the monomeric component (C).
Claim 7
Dependent Claim
25 words
A copying composition according to claim 1 in which the homopolymer of the monomeric component (C) has a glass transition temperature of at least 100°C.
Claim 8
Dependent Claim
15 words
A copying composition according to claim 6 in which styrene is the monomeric component (C).
Claim 9
Dependent Claim
64 words
A copying composition according to claim 1 in which, in the copolymer, the component (A) is present in a concentration of about 10 to 40 percent by weight, the component (B) is present in a concentration of about 35 to 83 percent by weight, and the component (C) is present in a concentration of about 1 to not more than 35 percent by weight.
Claim 10
Dependent Claim
19 words
A copying composition according to claim 1 in the form of a solid light-sensitive layer on a metallic support.
Claim 11
Dependent Claim
15 words
A copying composition according to claim 9 in which the support is a copper support.
Claim 12
Dependent Claim
22 words
A copying composition according to claim 1 in the form of a solid, transferable light-sensitive layer on an intermediate plastic film support.
Claim 13
Dependent Claim
32 words
A copying composition according to claim 1 containing a copolymer of 30 parts by weight of methacrylic acid, 60 parts by weight of n-hexyl methacrylate, and 10 parts by weight of styrene.
Claim 14
Dependent Claim
33 words
A copying composition according to claim 1 containing a copolymer of 50 parts by weight of methacrylic acid, 100 parts by weight of n-hexyl methacrylate, and 10 parts by weight of 1-vinyl naphthalene.
Claim 15
Dependent Claim
32 words
A copying composition according to claim 1 containing a copolymer of 20 parts by weight of methacrylic acid, 68.7 parts by weight of n-butyl methacrylate, and 11.3 parts by weight of styrene.
Claim 16
Dependent Claim
32 words
A copying composition according to claim 1 containing a copolymer of 50 parts by weight of methacrylic acid, 100 parts by weight of 2-ethyl-hexyl methacrylate, and 15 parts by weight of acrylonitrile.
Claim 17
Dependent Claim
32 words
A copying composition according to claim 1 containing a copolymer of 95 parts by weight of methacrylic acid, 175 parts by weight of n-hexyl methacrylate, and 50 parts by weight of acrylonitrile.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-01-05 | 1979-07-07 | 1980-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-05 | 1983-07-07 | 1984-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-05 | 1987-07-07 | 1988-01-06 | $7700.00 | Window Closed / Lapsed |