申请人:Ciba Specialty Chemicals Corporation
公开号:US06022906A1
公开(公告)日:2000-02-08
Compounds of the formulae I, II, III and IV ##STR1## wherein Ar for example is a phenyl, biphenyl or benzoylphenyl group, which is unsubstituted or substituted; Ar.sub.1, for example, has the same meanings as Ar; Ar.sub.2 is inter alia phenyl; X may be a direct bond; Y hydrogen, etc.; R.sub.1 and R.sub.2 for example C.sub.1 -C.sub.8 alkyl; R.sub.3 inter alia hydrogen or C.sub.1 -C.sub.12 alkyl; R.sub.4 is inter alia C.sub.1 -C.sub.12 alkyl; or R.sub.3 and R.sub.4 together are C.sub.3 -C.sub.7 alkylene; R.sub.5 is for example C.sub.1 -C.sub.6 alkylene; and Z is a divalent radical; provided that at least one of the radicals Ar, Ar.sub.1, Ar.sub.2, Ar.sub.3, R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5 or Y is substituted by 1 to 5 SH groups, or provided that Y contains at least one --SS-- group, are photoinitiators for the polymerization of ethylenically unsaturated compounds.
式I、II、III和IV的化合物##STR1##其中Ar例如是苯基、联苯基或苯甲酰苯基基团,未取代或取代;Ar.sub.1,例如具有与Ar相同的含义;Ar.sub.2等为苯基;X可以是直接键;Y氢等;R.sub.1和R.sub.2例如为C.sub.1-C.sub.8烷基;R.sub.3等为氢或C.sub.1-C.sub.12烷基;R.sub.4等为C.sub.1-C.sub.12烷基;或R.sub.3和R.sub.4一起为C.sub.3-C.sub.7烷基;R.sub.5例如为C.sub.1-C.sub.6烷基;Z为双价基团;前提是Ar、Ar.sub.1、Ar.sub.2、Ar.sub.3、R.sub.1、R.sub.2、R.sub.3、R.sub.4、R.sub.5或Y中至少有一个被1至5个SH基取代,或Y含有至少一个--SS--基团,用于聚合乙烯基不饱和化合物的光引发剂。