Patent ID: 7556843
Filing Date: 2009-07-07
Classification: B33Y,C07D,C08F,G03F

Abstract:
1. A photopolymerization process for producing pigmented or non-pigmented articles which process comprises irradiating with electromagnetic radiation in the range from 190 to 600 nm, or with electron beam or with X-rays a photosensitive composition comprising, (A) an oligomer or polymer containing at least one carboxylic acid group in the molecule and having a molecular weight of 200,000 or less selected from the group consisting of copolymers of (meth)acrylic acid with ethylenically unsaturated compounds, resins obtained by the reaction of a saturated or unsaturated polybasic acid anhydride with a product of the reaction of an epoxy compound and an unsaturated monocarboxylic acid, and polymers which are an addition product of a carboxyl group-containing resin and an unsaturated compound having an α,β-unsaturated double bond and an epoxy group, (B) at least one photoinitiator compound of formula I R R R (C) an ester of a polyol, wherein the polyol is partially or fully esterified with an ethylenically unsaturated carboxylic acid.