Photopolymer compositions
AssigneeHercules Incorporated
InventorDavid A. Simpson
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Abstract
It has been found that printing elements can be prepared from a water-soluble photopolymer composition comprising (1) a water-soluble thermoplastic ethylene oxide copolymer containing 50-96% ethylene oxide, (2) from about 0.5 to about 25% by weight based on the ethylene oxide copolymer of an ethylenically unsaturated monomer having its unsaturation in the form of at least two ##STR1## groups, wherein R is hydrogen or a C.sub.1 -C.sub.3 alkyl group, and (3) from about 0.1 to about 10% by weight based on the ethylene oxide copolymer of a photoinitiator thermally stable at temperatures up to about 150.degree. C. The above described photopolymer composition can be thermoformed, such as by extrusion or compression molding.
Claims22
A photopolymer composition comprising (1) a water-soluble, thermoplastic ethylene oxide copolymer containing 50-96% ethylene oxide, having a reduced specific viscosity of 0.4 l to 50 at 1% concentration in water at 25.degree. C., (2) from about 0.5 to about 25% by weight based on the ethylene oxide copolymer of an ethylenically unsaturated monomer having its unsaturation in the form of at least two ##STR17## groups, wherein R is hydrogen or a C.sub.1 -C.sub.3 alkyl group, and (3) from about0.1 to about 10% by weight based on the ethylene oxide copolymer of a photoinitiator thermally stable at temperatures up to about 150.degree. C.
Dependencies are inferred from the claim text.