Photopolymerizable mixture and recording material prepared there

Radiation imagery chemistry: process – composition – or product th – Imaging affecting physical property of radiation sensitive... – Radiation sensitive composition or product or process of making

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430281, 430288, 430916, 430920, 430926, G03F 7031, G03F 7033

Patent

active

051148323

ABSTRACT:
A photopolymerizable mixture is described, which contains a polymeric binder; an acrylate or alkacrylate of a polyhydric alcohol possessing at least one photooxidizable group; a compound or a combination of compounds being capable of initiating the polymerization of the ester under the action of light in the spectral region of 450 nm to 650 nm; and at least one compound which absorbs light in the region below 450 nm or which upon exposure forms a compound absorbing light in said region, whereby the optical density of the exposed mixture in this region is at least 2.0 at a layer thickness of 2 .mu.m. The mixture is useful for the production of masters or intermediate masters for reprographic layers being sensitive to light in the UV region, exposure of the mixture itself being performed with visible light.

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