申请人:Ciba Specialty Chemicals Corporation
公开号:US06057078A1
公开(公告)日:2000-05-02
Compounds of the formula I ##STR1## in which n and o are a number from 0 to 50, m is a number from 1 to 50, u and v are 0 or 1, and at least one of the indices u and v is 1, R.sub.1, R.sub.2, R.sub.2a, R.sub.3 and R.sub.4 independently of one another are, for example, aromatic hydrocarbons, R.sub.5, if n and o are 0, is for example C.sub.1 -C.sub.12 alkyl and, if n and/or o are greater than 0, or if n and o are 0 and at the same time only one index u or v is 1, R.sub.5 may additionally, for example, be an aromatic hydrocarbon, at least one of the radicals R.sub.1, R.sub.2, R.sub.2a, R.sub.3, R.sub.4 and R.sub.5 being an aromatic hydrocarbon radical which is sterically hindered ortho to the boron atom, X is, for example, C.sub.1 -C.sub.20 alkylene, phenylene, biphenylene, etc., and Z is a radical which is able to form positive ions, are suitable as photoinitiators, both the compounds per se and their combination with dyes or other electron acceptors. Furthermore, the polyborane precursors of these borates possess, together with borate salts, photoinitiating properties.
式I的化合物##STR1##其中n和o是0到50的数字,m是1到50的数字,u和v为0或1,并且至少一个指数u和v为1,R.sub.1,R.sub.2,R.sub.2a,R.sub.3和R.sub.4彼此独立地为例如芳香族烃,R.sub.5如果n和o为0,则为例如C.sub.1-C.sub.12烷基,如果n和/或o大于0,或者如果n和o为0且同时仅有一个指数u或v为1,则R.sub.5还可以为例如芳香族烃,其中至少一个基团R.sub.1,R.sub.2,R.sub.2a,R.sub.3,R.sub.4和R.sub.5是位于硼原子邻位的空间位阻的芳香族烃基团,X为例如C.sub.1-C.sub.20的烷基,苯基,联苯基等,Z是能够形成正离子的基团,既可以将这些化合物本身作为光引发剂,也可以将它们与染料或其他电子受体结合使用。此外,这些硼酸盐的聚硼烷前体与硼酸盐一起具有光引发性能。