US5102771A
Expired / Lapsed
US
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Photosensitive materials
Assignee: Eastman Kodak Co
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Filing: 1990-11-26
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Granted: 1992-04-07
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Expires: 2010-11-26
Abstract
Abstract Photosensitive compositions containing a photoinitiator which generates an acid upon exposure to light and a polymer containing pendant alkoxy alkyl ester groups. Also disclosed are imageable articles containing the photosensitive compositions of the present invention coated on a substrate as well as processes for forming an imaged article.
Inventors
- 👤 Dennis E. Vogel
- 👤 John J. Stofko, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:07
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/039; G03F7/038
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
157 words
A photosensitive composition comprising: (a) a photoinitiator which generates an acid upon exposure to radiation; and (b) a polymer having acid labile groups pendant from the polymer backbone, said acid labile pendant groups being represented by the following formula: ##STR5## wherein: R 1 and R 2 each represent hydrogen or a C 1 to C 18 alkyl group with the proviso that at least one of R 1 and R 2 must be hydrogen; R 3 represents a C 1 to C 18 alkyl group; or any two of R 1 , R 2 , and R 3 together form a substituted or unsubstituted ring containing from 2 to 36 carbon atoms; and T represents a divalent linking group connected to the polymer backbone and contains a total of from 0 to about 18 carbon atoms where up to one of each three carbon atoms can be replaced with nitrogen, oxygen, or sulfur atoms, or combinations thereof.
Claim 2
Dependent Claim
157 words
A photosensitive composition comprising: (a) a photoinitiator which generates an acid upon exposure to radiation; and (b) a polymer having acid labile groups pendant from the polymer backbone, said acid labile pendant groups being represented by the following formula: ##STR5## wherein: R 1 and R 2 each represent hydrogen or a C 1 to C 18 alkyl group with the proviso that at least one of R 1 and R 2 must be hydrogen; R 3 represents a C 1 to C 18 alkyl group; or any two of R 1 , R 2 , and R 3 together form a substituted or unsubstituted ring containing from 2 to 36 carbon atoms; and T represents a divalent linking group connected to the polymer backbone and contains a total of from 0 to about 18 carbon atoms where up to one of each three carbon atoms can be replaced with nitrogen, oxygen, or sulfur atoms, or combinations thereof.
Claim 3
Dependent Claim
25 words
A photosensitive composition according to claim 1 wherein said photoinitiator is one selected from the group consisting of onium salts and photolyzable organic halogen compounds.
Claim 4
Dependent Claim
120 words
A photosensitive composition according to claim 2 wherein said photoinitiator is one selected from the group consisting of: ##STR6## wherein: A and B are individually substituted or unsubstituted aryl groups with a total of from 4 to 20 carbon atoms; W is selected from the group consisting of a carbon to carbon bond; oxygen; sulfur; ##STR7## R 6 is aryl, acyl, or R 7 -C-R 8 ; R 7 and R 8 are individually hydrogen, an alkyl group of 1-4 carbon atoms, or an alkenyl group of 2 to 4 carbon atoms; p is 0 or 1; and Q is an anion with a pK a less than about 16 and an oxidation potential of greater than about 0.7 V.
Claim 5
Dependent Claim
16 words
A photosensitive composition according to claim 3 wherein said anion Q is a halogenated metal complex.
Claim 6
Dependent Claim
36 words
A photosensitive composition according to claim 2 wherein said photolyzable organic halogen compound contains from 1 to 40 carbon atoms, is non-gaseous at room temperature, and has a polarographic half-wave reduction potential greater than -0.9 V.
Claim 7
Dependent Claim
31 words
A photosensitive composition according to claim 1 wherein said polymer is one selected from the group consisting of polyacrylates, polymethacrylates, polystyrenes, acrylonitrile-styrene copolymers, butadiene-styrene copolymers, polyolefins, polyesters, polyethers, polycarbonates, and polysulfides.
Claim 8
Dependent Claim
34 words
A photosensitive composition according to claim 1 wherein said divalent linking group T does not contain any basic functional groups selected from the group consisting of free amines, alkoxides, sulfides, amides, urethanes, and imides.
Claim 9
Dependent Claim
17 words
A photosensitive composition according to claim 1 further comprising a homo- or copolymer of an acid anhydride.
Claim 10
Dependent Claim
14 words
A photosensitive composition according to claim 8 wherein said acid anhydride is maleic anhydride.
References Cited (Backward Citations)
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