申请人:WARD BLENKINSOP AND COMPANY LIMITED
公开号:EP0224967A1
公开(公告)日:1987-06-10
The invention provides thioxanthone derivatives of general formula
wherein one of R², R³ and R⁴ is a group of formula
in which one of R⁵, R⁶ and R⁷ is an alkyl or a benzyl group, the others being alkyl groups and A⁻ represents an anion, and R¹ and the others of R², R³, and R⁴ are independently selected from hydrogen atoms, alkyl groups and alkoxy groups; and the use of such derivatives as photoinitiators, particularly in aqueous photopolymerisable compositions for the production of stencils for screen printing.
本发明提供了通式的硫氧杂环酮衍生物,其中 R²、R³ 和 R⁴ 中的一个是式中的基团,式中 R⁵、R⁶ 和 R⁷ 中的一个是烷基或苄基,其它基团是烷基,A- 代表阴离子,R¹ 和 R²、R³ 和 R⁴ 中的其它基团独立地选自氢原子、烷基和烷氧基;并提供了此类衍生物作为光引发剂的用途,特别是在用于生产丝网印刷模板的水性可光聚合组合物中的用途。