Process for the production of images

Details Process for the production of images Process for the production of images

G - Physics

03

C

96/218

G03C 5/00 (2006.01) G03F 7/027 (2006.01)

Patent

CA 1217375

PROCESS FOR THE PRODUCTION OF IMAGES ABSTRACT A layer of a liquid composition containing (A) a compound containing at least one heat-polymerisable, ethylenically- unsaturated group, (B) a photopolymerisable material, and (C) a thermally-activated free radical initiator for polymerisation of (A), is heated to solidify the layer, and subsequently it is exposed to actinic radiation in a predetermined pattern and those parts of the layer that have not become photopolymerised are removed by treatment with a suitable solvent. An example of an unsaturated, heat polymerisable compound (A) is butanediol dimethacrylate. An example of a photo- polymerisable material (B) is an epoxidised novolak of 2,2-bis(4- hydroxyphenyl)propane with triphenylsulphonium hexafluorophosphate. A typical thermally-activated, free radical initiator (C) is cumene hydroperoxide. The process is suitable for the manufacture of printing plates and printed circuits.

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