申请人:BASF Aktiengesellschaft
公开号:US05191124A1
公开(公告)日:1993-03-02
Sulfonium salts of the general formula ##STR1## where R.sup.1, R.sup.2 and R.sup.3 are identical or different and are aliphatic and/or aromatic radicals which may contain heteroatoms, or two of the radicals R.sup.1 and R.sup.3 are bonded to one another to form a ring, with the proviso that one or more of the radicals R.sup.1 to R.sup.3 contain one or more acid-cleavable groups, or one of the radicals R.sup.1 to R.sup.3 is bonded to one or more further sulfonium salt radicals, if desired via acid-cleavable groups, and X.sup..crclbar. is a non-nucleophilic counter-ion, are suitable as photoinitiators for cationic polymerization.
通式为##STR1##的磺鎵盐,其中R.sup.1、R.sup.2和R.sup.3相同或不同,是脂肪族和/或芳香族基团,可以含有杂原子,或者两个基团R.sup.1和R.sup.3相互连接形成环,但必须满足其中一个或多个基团R.sup.1到R.sup.3含有一个或多个酸解离基团,或者其中一个基团R.sup.1到R.sup.3与一个或多个其他磺鎵盐基团相互连接,如果需要可以通过酸解离基团进行连接,而X.sup..crclbar.是非亲核对离子,则适用于阳离子聚合的光引发剂。