Water developable photopolymerizable composition and printing pl

Details Water developable photopolymerizable composition and printing pl Water developable photopolymerizable composition and printing pl

1984-09-12

1985-09-10

Brammer, Jack P.

Radiation imagery chemistry: process, composition, or product th

Imaging affecting physical property of radiation sensitive...

Radiation sensitive composition or product or process of making

430905, 430926, 430909, 430300, 430302, 20415923, 20415924, G03C 168

Patent

active

045406499

ABSTRACT:
A water developable, photopolymerizable composition and printing plates prepared from such composition are disclosed. The photopolymerizable composition includes at least one water soluble polymer, such as polyvinyl alcohol or partially saponified polyvinyl acetate, at least one photopolymerization initiator, and the condensation reaction product of N-methylol acrylamide, N-methylol methacrylamide, N-alkyloxymethyl acrylamide or N-alkyloxymethyl methacrylamide with a melamine derivative of the following formula: ##STR1## wherein, R.sub.1 is CH.sub.2 OR, R.sub.2 is H or CH.sub.2 OR, and R is C.sub.1 -C.sub.4 alkyl. A thermal polymerization inhibitor may also be included in the composition.
Plates prepared from the composition demonstrate improved hardness and water resistance, compared to previously known photopolymerizable compositions, and also achieve excellent image quality.

REFERENCES:
patent: 3801328 (1974-04-01), Takimoto et al.
patent: 3899611 (1975-08-01), Hall
patent: 4125678 (1978-11-01), Stvan et al.
patent: 4209581 (1980-06-01), Takanashi et al.
patent: 4230550 (1980-10-01), Vincent
patent: 4233391 (1980-11-01), Okay et al.

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