申请人:——
公开号:US20020007020A1
公开(公告)日:2002-01-17
There is disclosed a (2,5-disubstituted-1,4-phenylene oxide) block copolymer which comprises one or more block structural units represented by formula (I) and at least one particular divalent structural unit in a molecule. There is also disclosed a (2,5-disubstituted-1,4-phenylene oxide) graft polymer which comprises one or more structural units of formula (IV), or three or more of structural unit of formula (IV) and particular divalent structural unit, in a molecule.
1
(wherein R
1
represents an unsubstituted or substituted hydrocarbon group, and the two R
1
s may be the same or different; a represents a number average degree of polymerization and is 5 or more; R
4
represents a trifunctional unsubstituted or substituted hydrocarbon group; U represents —CO—, —OCO—, or —NHCO—; and f is 1 or 0.)
本发明公开了一种(2,5-二取代-1,4-苯基氧化物)嵌段共聚物,其分子中包含一个或多个由式(I)表示的嵌段结构单元和至少一个特定的二价结构单元。本发明还公开了一种(2,5-二取代-1,4-苯基氧化物)接枝聚合物,其分子中包含一个或多个式(IV)结构单元,或三个或多个式(IV)结构单元和特定的二价结构单元。
1
(其中 R
1
代表未取代或取代的烃基,两个 R
1
可以相同或不同;a 代表平均聚合度,为 5 或以上;R
4
代表三官能团未取代或取代的烃基;U 代表-CO-、-OCO-或-NHCO-;f 为 1 或 0。)