申请人:SHOWA DENKO KABUSHIKI KAISHA
公开号:EP1002817A2
公开(公告)日:2000-05-24
A photocurable composition comprising (A) 100 parts by weight of a compound having an ethylenically unsaturated group, (B) from 0.001 to 5 parts by weight of a cationic dye having an absorption maximum wavelength in the wavelength region of from 400 to 1,200 nm represented by formula (1):D+·A1 - wherein D+ represents a cation having an absorption maximum wavelength in the wavelength region of from 400 to 1,200 nm, and A1- represents an anion, and (C) from 0.005 to 10 parts by weight of a quaternary borate-type compound represented by formula (2):
wherein R1, R2, R3 and R4 each independently represents an alkyl group, an aryl group, an aralkyl group, an alkenyl group, an alkynyl group, a silyl group, a heterocyclic group or a halogen atom, and Z+ represents a cation, wherein from 5 to 95 wt% of (A) the compound having an ethylenically unsaturated group is a urethane (meth)acrylate oligomer obtained by the reaction of a polyisocyanate having three or more isocyanate groups within one molecule with a hydroxyl group-containing (meth)acrylic acid ester.
一种光固化组合物,包括(A)100 重量份具有乙烯不饱和基团的化合物,(B)0.001至5份(重量)的阳离子染料,其吸收最大波长为400至1,200纳米,由式(1)表示:D+-A1- 其中D+代表阳离子,其吸收最大波长为400至1,200纳米,A1-代表阴离子,和(C)0.005至10份(重量)的季硼酸酯类化合物,由式(2)表示:
其中 R1、R2、R3 和 R4 各自独立地代表烷基、芳基、芳烷基、烯基、炔基、硅 基、杂环基或卤素原子,Z+ 代表阳离子、其中(A)具有乙烯基不饱和基团的化合物的 5 至 95 wt%为聚氨酯(甲基)丙烯酸酯低聚物,该低聚物是由在一个分子内具有三个或更多异氰酸酯基团的多异氰酸酯与含羟基的(甲基)丙烯酸酯反应而得。