Patent US3531853A successfully refreshed from Google Patents.
Patent US4263394A successfully refreshed from Google Patents.
US4263394A
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Aqueous alkaline soluble photopolymerizable material
Assignee: EIDP Inc
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Filing: 1979-06-18
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Granted: 1981-04-21
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Expires: 1999-06-18
Abstract
Abstract A photopolymerizable material suitable for use in the production of lithographic printing plates comprises a polymer which includes a plurality of structural units represented by the Formula: ##STR1## in which R 1 represents a hydrogen atom or a methyl group; R 2 represents a hydrogen atom, an alkyl or substituted alkyl group, an aryl or substituted aryl group, or a heterocyclic or substituted heterocyclic group; R 3 , R 4 and R 5 , which may be the same or different, each represents a hydrogen atom, a halogen atom, a cyano group, an alkyl group, an aryl group, an alkoxy group, an aryloxy group, an aralkyl group, an aralkoxy group or an alkoxy carbonyl group; Z represents a hydroxyl group, or an ester group and a is an integer greater than or equal to 1. The polymer may be produced by reacting a polymer of 2,3-epoxy propyl acrylate or 2,3-epoxy propyl methacrylate with an acid of formula ##STR2##
Inventors
- 👤 Allen P. Gates
- 👤 Stephen C. Hinch
- 👤 Christopher V. Withers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:03
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/038; G03F7/0388; C; C07; C07C; C07C205/00; C07C205/44; C07C205/49; C07C205/56; C07C255/00; C07C45/00; C07C47/00; C07C47/20; C07C47/24; C07C57/00; C07C57/30; C07C57/42; C07C59/00; C07C59/40; C07C59/58; C07C59/64; C07C59/66; C07C59/68; C08; C08F; C08F20/00; C08F20/02; C08F20/10; C08F20/26; C08F20/34; C08F20/36
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
143 words
A polymer which includes a plurality of structural units represented by Formula (I): ##STR8## in which R 1 represents a hydrogen atom or a methyl group; R 2 represents a hydrogen atom, an alkyl or substituted alkyl group, an aryl or substituted aryl group, or a heterocyclic or substituted deterocyclic group; R 3 , R 4 and R 5 , which may be the same or different, each represents a hydrogen atom, a halogen atom, a cyano group, an alkyl group, an aryl group, an alkoxy group, an aryloxy group, an aralkyl group, an aralkoxy group or an alkoxy carbonyl group; Z represents a hydroxyl group or an ester group and a is an integer greater than or equal to 1, the number of said structural units in the polymer being such that the polymer is photopolymerizable and soluble in aqueous alkaline solution.
Claim 2
Dependent Claim
143 words
A polymer which includes a plurality of structural units represented by Formula (I): ##STR8## in which R 1 represents a hydrogen atom or a methyl group; R 2 represents a hydrogen atom, an alkyl or substituted alkyl group, an aryl or substituted aryl group, or a heterocyclic or substituted deterocyclic group; R 3 , R 4 and R 5 , which may be the same or different, each represents a hydrogen atom, a halogen atom, a cyano group, an alkyl group, an aryl group, an alkoxy group, an aryloxy group, an aralkyl group, an aralkoxy group or an alkoxy carbonyl group; Z represents a hydroxyl group or an ester group and a is an integer greater than or equal to 1, the number of said structural units in the polymer being such that the polymer is photopolymerizable and soluble in aqueous alkaline solution.
Claim 3
Dependent Claim
94 words
A polymer as claimed in claim 1, wherein in Formula I, (i) R 2 represents phenyl and R 3 , R 4 and R 5 represent hydrogen; (ii) R 2 represents 2-nitrophenyl and R 3 , R 4 and R 5 represent hgydrogen; (iii) R 2 represents 3-nitrophenyl and R 3 , R 4 and R 5 represent hydrogen; (iv) R 2 represents phenyl, R 3 represents chloro and R 4 and R 5 represent hydrogen; or (v) R 2 represents 4-nitrophenyl, R 3 represents chloro and R 4 and R 5 represent hydrogen.
Claim 4
Dependent Claim
76 words
A polymer as claimed in claim 1, wherein the polymer additionally includes a plurality of structural units having the Formula (II); ##STR9## in which Z 1 represents a hydroxyl group, an ester group or a halogen atom, R 1 to R 5 represent the same as in Formula I, R 6 represents the same as R 3 to R 5 in Formula I and b is 0 or an integer greater than or equal to 1.
Claim 5
Dependent Claim
217 words
A polymer as claimed in claim 3, wherein in Formula II, (i) b is 0, and R 2 , R 5 and R 6 all represent hydrogen; (ii) b is 0, R 2 and R 5 represent hydrogen; and R 6 represents methyl; (iii) b is 0, R 2 represents phenyl and R 5 and R 6 represent hydrogen; (iv) b is 0, R 2 represents 4-methoxyphenyl, R 5 represents hydrogen and R 6 represents cyano; (v) b is 0, R 2 represents 4-chloro-phenyl, R 5 represents hydrogen and R 6 represents phenyl; (vi) b is 0, R 2 represents 4-methyl phenyl, R 5 is hydrogen and R 6 is phenoxy; (vii) b is 0, R 2 represents 4-azido phenyl, R 5 represents hydrogen and R 6 represents cyano; (iix) b is 0, R 2 represents 2-furyl, and R 5 and R 6 represent hydrogen; (ix) b is 1, R 2 represents phenyl, R 3 , R 4 and R 5 represent hydrogen and R 6 is cyano; (x) b is 1, R 2 is phenyl, R 3 , R 4 and R 5 represent hydrogen and R 6 represents ethoxy carbonyl; or (xi) b is 1, R 2 represents phenyl, R 3 and R 4 represent hydrogen, R 5 represents methyl and R 6 represents cyano.
Claim 6
Dependent Claim
59 words
A polymer as claimed in claim 1, wherein the polymer additionally includes a plurality of structural units having the Formula (III); ##STR10## in which R 1 and Z 1 represent the same as in Formula II and R 7 represents an alkyl or substituted alkyl group, an aryl or substituted aryl group, or a heterocyclic or substituted heterocyclic group.
Claim 7
Dependent Claim
52 words
A polymer as claimed in claim 5, wherein in Formula III, (i) R 7 represents methyl and Z 1 represent hydroxyl; (ii) R 7 represents heptyl and Z 1 represents hydroxyl; (iii) R 7 represents ethyl and Z 1 represents chlorine; or (iv) R 7 represents trichloromethyl and Z 1 represents hydroxyl.
Claim 8
Dependent Claim
24 words
A polymer as claimed in claim 1, wherein the polymer additionally includes a plurality of structural units derived from an unsaturated addition polymerisable monomer.
Claim 9
Dependent Claim
17 words
A polymer as claimed in claim 7, wherein said polymerisable monomer is dodecyl methacrylate, styrene or acrylonitrile.
Claim 10
Dependent Claim
15 words
A light sensitive plate comprising a polymer according to claim 1 coated on a substrate.
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) | 1984-04-20 | 1984-10-20 | 1985-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-04-20 | 1988-10-20 | 1989-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-04-20 | 1992-10-20 | 1993-04-21 | $7700.00 | Window Closed / Lapsed |