发明授权
US06458864B1 Photoinitiators having chain transfer groups polymerized to obtain macrophotoinitiators useful to give block copolymers
失效
具有链转移基团的光引发剂被聚合以获得可用于产生嵌段共聚物的大分子引发剂
- 专利标题： Photoinitiators having chain transfer groups polymerized to obtain macrophotoinitiators useful to give block copolymers
- 专利标题（中）： 具有链转移基团的光引发剂被聚合以获得可用于产生嵌段共聚物的大分子引发剂
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申请号： US09701457申请日： 2000-11-27
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公开(公告)号： US06458864B1公开(公告)日： 2002-10-01
- 发明人: Toshikage Asakura , Masaki Ohwa , Hitoshi Yamato , Asako Ito
- 申请人： Toshikage Asakura , Masaki Ohwa , Hitoshi Yamato , Asako Ito
- 优先权： EP98810501 19980529
- 主分类号： C08F250
- IPC分类号： C08F250
摘要：
Compounds with chain transfer groups of the formula I, II, III and IV wherein a is 1 or 2; Ar and Ar1 inter alia are phenyl; Ar2 inter alia is phenylene, these groups being unsubstituted or substituted; X is a direct bond, —O—, —S— or —N(R6)—; Y inter alia is hydrogen or C1-C12alkyl; M1 is —NR3R4 or —OH, or M1 is Ar when R1 and R2 are alkoxy, or aryloxy; R1 and R2 independently of one another e.g. are C1-C8alkyl; R3 and R4 for example are C1-C12alkyl, or together are C3-C7alkylene; R5 inter alia is C1-C6alkylene or a direct bond; R6 is for example hydrogen; and Z is a divalent radical, provided that at least one of the radicals Ar, Ar1, Ar2, R1, R2, R3, R4, R5 or Y is substituted by SH groups; are suitable for the thermal preparation of macrophotoinitiators which are polymerized photochemically to give block-copolymers.
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