PHOTOPOLYMERIZATION COMPOSITION AND TRANSPARENT CURED PRODUCT

摘要

PROBLEM TO BE SOLVED: To obtain a photopolymerization composition excellent in surface smoothness. SOLUTION: This photopolymerization composition contains [I] a photopolymerizable oligomer that contains >=30mol% of a photopolymerizable di(meth)acrylate polyester oligomer having at lest 4 ester-linkages in the molecule (ester linkages originating from acrylate are excluded) prepared by esterification reaction of a polyester from (a) a polyhydric alcohol bearing 2 or more hydroxyl and/or mercapto groups and (b) a dicarnboxylic acid with (c) a (meth)acrylic acid compounds such as (meth)acrylic acids, (meth)acrylic acid halides or (meth)acrylate esters and [II] a catalytic amount of a photopolymerization initiator.