Patent ID: 11860539
Assignee: SHOWA KAKO CORPORATION
Field: Optics (Instruments)
Classification: CPC G  C | IPC C  G

Claim 0:
1. A photosensitive resin composition in form of an aqueous emulsion comprising:
a water-based, water-processable, non-saponified, and non-hydrolyzed vinyl acetate polymer to which at least one group selected from the group consisting of a styrylpyridinium group and a styrylquinolinium group has been added, the polymer being obtained by adding from 0.01 to 5 mole % of the at least one group selected from the group consisting of the styrylpyridinium group and the styrylquinolinium group to a vinyl acetate polymer having a polymerization degree in a range from 100 to 5000 and a saponification degree of zero, and the styrylpyridinium group and the styrylquinolinium group being one or more of respective formulae in the following formulae (A) and (B):, wherein A represents:, or, wherein, R1 is a hydrogen atom or an alkyl or aralkyl group which optionally contains a hydroxyl group, a carbamoyl group, an ether bond, or an unsaturated bond; R2 is a hydrogen atom or a lower alkyl group; and X− is a halide ion, a phosphate ion, a p-toluene-sulfonate ion, a methyl sulfate ion, an ethyl sulfate ion, or a mixture of two or more of said ions, wherein A is:, or, wherein, R1 is a hydrogen atom or an alkyl or aralkyl group which optionally contains a hydroxyl group, a carbamoyl group, ether bond, or an unsaturated bond; R2 is a hydrogen atom or a lower alkyl group; and X− is a halide ion, a phosphate ion, a p-toluene-sulfonate ion, a methyl sulfate ion, an ethyl sulfate ion, or mixture of two or more of said ions.