申请人:MITSUI TOATSU CHEMICALS, Inc.
公开号:EP0488630A2
公开(公告)日:1992-06-03
Disclosed are a thermally stable polyimide which is blocked at the polymer terminal with a dicarboxylic acid anhydride represented by the formula (III) :
wherein Z is a divalent radical selected from the group consisting of a monoaromatic radical which is substantially unsubstituted or substituted with a radical having no reactivity with amine or dicarboxylic acid anhydride and has from 6 to 15 carbon atoms, a condensed polyaromatic radical or a noncondensed aromatic radical connected each other with a direct bond or a bridge member, and has a fundamental skeleton represented by recurring structural units of the formula (IV) :
; and preparation process of the polyimide.
本发明公开了一种热稳定聚酰亚胺,该聚酰亚胺在聚合物末端用式 (III) 所代表的二羧酸酐封端:
其中 Z 是二价自由基,选自由下列自由基组:基本未被取代或被与胺或二羧酸酐无 反应性的自由基取代的单芳香族自由基,具有 6 至 15 个碳原子;缩合多芳香族自由基或彼此以直 接键或桥件连接的非缩合芳香族自由基;具有由式 (IV) 重复结构单元表示的基本骨架:
以及聚酰亚胺的制备工艺。