US4772538A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water developable lithographic composition
Assignee: CNA Holdings LLC
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Filing: 1985-08-02
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Granted: 1988-09-20
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Expires: 2005-08-02
Abstract
Abstract This invention relates to a radiation polymerizable composition for use in a photographic element such as a lithographic printing plate comprising in admixture (a) a binder resin having the general formula --A--B--C-- wherein a plurality of each of components A, B and C occur in ordered or random sequence in the resin and wherein A is present in said resin at about 5% to about 20% by weight and comprises groups of the formula ##STR1## B is present in said resin at about 4% to about 30% by weight and comprises groups of the formula ##STR2## and C is present in said resin at about 50% to about 91% by weight and comprises acetal groups consisting of groups of the formulae ##STR3## where R is lower alkyl or hydrogen, and wherein said group I is present in component C from about 75% to about 85%, group II is present in component C from about 3% to about 5%; and group III is present in component C from about 10% to about 22%; (b) a photoinitiator; (c) a photopolymerizable mixture of (1) a polyethoxylate diacrylate monomer; and (2) an oligomeric amine diacrylate.
Inventors
- 👤 John E. Walls
- 👤 Frank C. Pagano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:04
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; Y10S430/11; Y10S430/114; Y10S430/12; Y10S430/121; Y10S430/122; Y10S430/123; Y10S522/00; Y10S522/904
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
174 words
A radiation-polymerizable composition comprising in admixture (a) a binder resin having the general formula --A--B--C-- wherein a plurality of each of components A, B and C occur in ordered or random sequence in the resin and wherein A is present in said resin at about 5% to about 20% by weight and comprises groups of the formula ##STR20## B is present in said resin at about 4% to about 30% by weight and comprises groups of the formula ##STR21## and C is present in said resin at about 50% to about 91% by weight and comprises acetal groups consisting of groups of the formulae ##STR22## where R is lower alkyl or hydrogen, and wherein said group I is present in component C from about 75% to about 85%, group II is present in component C from about 3% to about 5%; and group III is present in component C from about 10% to about 22%; (b) a photoinitiator; and (c) a photopolymerizable mixture of (1) a polyethoxylate diacrylated monomer; (2) an oligomeric amine diacrylate.
Claim 2
Dependent Claim
174 words
A radiation-polymerizable composition comprising in admixture (a) a binder resin having the general formula --A--B--C-- wherein a plurality of each of components A, B and C occur in ordered or random sequence in the resin and wherein A is present in said resin at about 5% to about 20% by weight and comprises groups of the formula ##STR20## B is present in said resin at about 4% to about 30% by weight and comprises groups of the formula ##STR21## and C is present in said resin at about 50% to about 91% by weight and comprises acetal groups consisting of groups of the formulae ##STR22## where R is lower alkyl or hydrogen, and wherein said group I is present in component C from about 75% to about 85%, group II is present in component C from about 3% to about 5%; and group III is present in component C from about 10% to about 22%; (b) a photoinitiator; and (c) a photopolymerizable mixture of (1) a polyethoxylate diacrylated monomer; (2) an oligomeric amine diacrylate.
Claim 3
Dependent Claim
32 words
The composition of claim 1 wherein said photopolymerizable mixture further comprises a multifunctional acrylate monomer having two or more unsaturated groups, and an oligomeric urethane acrylate having one or two unsaturated groups.
Claim 4
Dependent Claim
14 words
The composition of claim 1 wherein said polyethoxylate diacrylated monomer has the formula ##STR23##
Claim 5
Dependent Claim
35 words
The composition of claim 1 wherein said oligomeric amine diacrylate has the formula ##STR24## wherein R 1 is ##STR25## where n=0-4; and R 2 is hydrogen, hydroxyl or --(CH 2 ) m OH where m=1-4.
Claim 6
Dependent Claim
14 words
The composition of claim 2 wherein said multifunctional acrylate monomer is trimethylolpropane ethoxylate triacrylate.
Claim 7
Dependent Claim
35 words
The composition of claim 2 wherein said oligomeric urethane acrylate has the formula ##STR26## wherein ##STR27## and R 4 =R 5 =C 6 H 3 R 7 ##STR28## wherein R 7 =--CH 3 or --H.
Claim 8
Dependent Claim
12 words
The composition of claim 1 wherein said photoinitiator is a thioxanthone compound.
Claim 9
Dependent Claim
11 words
The compound of claim 7 wherein said thioxanthone compund is 2-isopropyl-9H-thioxanthen-9-one.
Claim 10
Dependent Claim
12 words
The composition of claim 1 wherein said photoinitiator comprises a triazine compound.
Claim 11
Dependent Claim
44 words
The composition of claim 9 wherein said photoinitiator comprises a bis-trichloromethyl triazine having the formula ##STR29## wherein Ar is ##STR30## and R 8 , R 9 , R 10 , and R 11 are, independently, hydrogen, chlorine, bromine, alkoxy, alkyl ketone, naphthyl or anthracyl.
Claim 12
Dependent Claim
10 words
The composition of claim 10 wherein said photoinitiator is 2-stilbenyl-4,6-di(trichloromethyl)triazine.
Claim 13
Dependent Claim
9 words
The composition of claim 1 wherein R is ethyl.
Claim 14
Dependent Claim
9 words
The composition of claim 1 wherein R is methyl.
Claim 15
Dependent Claim
20 words
The composition of claim 1 wherein said binder resin is present at from about 8% to about 18% by weight.
Claim 16
Dependent Claim
20 words
The composition of claim 14 wherein said binder resin is present at from about 10% to about 12% by weight.
Claim 17
Dependent Claim
20 words
The composition of claim 1 wherein said diacrylate monomer is present at from about 4% to about 14% by weight.
Claim 18
Dependent Claim
20 words
The composition of claim 16 wherein said diacylate monomer is present at from about 5% to about 7% by weight.
Claim 19
Dependent Claim
21 words
The composition of claim 1 wherein said oligomeric amine diacrylate is present at from about 1.5% to about 14% by weight.
Claim 20
Dependent Claim
21 words
The composition of claim 18 wherein said oligomeric amine diacrylate is present at from about 5% to about 7% by weight.
Claim 21
Dependent Claim
19 words
The composition of claim 2 wherein said multifunctional acrylate monomer is present at up to about 12% by weight.
Claim 22
Dependent Claim
21 words
The composition of claim 20 wherein said multifunctional acrylate monomer is present at from about 2% to about 4% by weight.
Claim 23
Dependent Claim
19 words
The composition of claim 2 wherein said oligomeric urethane acrylate is present at up to about 12% by weight.
Claim 24
Dependent Claim
21 words
The composition of claim 22 wherein said oligomeric urethane acrylate is present at from about 2% to about 4% by weight.
Claim 25
Dependent Claim
20 words
The composition of claim 7 wherein said triazine compound is present at from about 0.2% to about 1.0% by weight.
Claim 26
Dependent Claim
20 words
The composition of claim 24 wherein said triazine compound is present at from about 0.5% to about 0.7% by weight.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1991-09-20 | 1992-03-21 | 1992-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-09-20 | 1996-03-21 | 1996-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-09-20 | 2000-03-21 | 2000-09-20 | $7700.00 | Window Closed / Lapsed |