申请人:Eastman Kodak Company
公开号:US05055376A1
公开(公告)日:1991-10-08
Compositions of matter are provided which comprise a material curable by a Bronsted acid, and a photoinitiator salt having the formula: ##STR1## wherein: R.sup.1 represents an electron-donating chromophore group which absorbs visible radiation and which exhibits a higher energy occupied molecular orbital than at least one of R", R'" and R""; R" represents the same substituent as R' or R'", an optionally substituted aryl group or an optionally substituted alkyl group having from 1 to 18 carbon atoms; R'" represents an electron-withdrawing alkyl, aryl or heterocyclic group; R.sub.1 and R.sub.2 each, independently, represents hydrogen or an electron-donating group; J represents an S, Se, As, N or P atom; and when J represents As, N or P, R"" represents the same substituent as R', R" or R'", and when J represents an S or Se atom, R"" represents O or an electron pair; and W.sup..THETA. represents an anion capable of forming a Bronsted acid having a pKa of less than 7, said photoinitiator salt being capable, upon exposure to visible radiation of a wavelength absorbed by said chromophore, of forming a Bronsted acid. The invention also relates to the use of said compositions.
本发明提供了一种由可由Bronsted酸固化的材料和具有以下式的光引发剂盐组成的物质:##STR1##其中:R.sup.1代表吸收可见辐射并具有高于R"、R'"和R""中至少一个的能量占据分子轨道的电子给予色团基团;R"代表与R'或R'"相同的取代基团,可选取代的芳基基团或具有1至18个碳原子的可选取代的烷基基团;R'"代表电子提取的烷基、芳基或杂环基团;R.sub.1和R.sub.2各自独立地代表氢或电子给予基团;J代表S、Se、As、N或P原子;当J代表As、N或P时,R""代表与R'、R"或R'"相同的取代基团,当J代表S或Se原子时,R""代表O或电子对;W.sup..THETA.代表能形成pKa小于7的Bronsted酸的阴离子,该光引发剂盐能够在暴露于被色团吸收的可见辐射波长下形成Bronsted酸。本发明还涉及所述组合物的使用。