[Problem]
To provide a photopolymerization initiator that has high compatibility with monomers used in combination, suppresses the problems of offensive odors and bleeding-out, and has high sensitivity to long-wavelength light.
[Solution]
A photopolymerization initiator having one or more ethylenic unsaturated bonds and one or more photopolymerization initiating functional groups in the molecule has been found, and the present invention has been arrived at. One or more kinds selected from an acrylamide group, an acrylate group, a vinyl group, an allyl group, a maleimide group, and the like can be suitably used as the ethylenic unsaturated bond, and a benzophenone compound having a specific structure can be suitably used as the photopolymerization initiating functional group.
问题
提供一种光聚合
引发剂,该
引发剂与混合使用的单体具有高度兼容性,可抑制异味和渗出问题,并对长波光具有高灵敏度。
[解决方案]
现已找到一种光聚合
引发剂,其分子中含有一个或多个
乙烯不饱和键和一个或多个光聚合引发官能团,本发明由此诞生。从
丙烯酰胺基、
丙烯酸酯基、
乙烯基、烯丙基、马来
酰亚胺基等中选出的一种或多种可适当用作
乙烯基不饱和键,具有特定结构的
二苯甲酮化合物可适当用作光聚合引发官能团。