A new synthetic route of 4,4′-hexafluoroisopropylidene-2, 2-bis-(phthalic acid anhydride) and characterization of 4,4′-hexafluoroisopropylidene-2,2-bis-(phthalic acid anhydride)-containing polyimides

被引:8
|
作者
Zhu, SZ [1 ]
Zhao, JW [1 ]
Zhang, YX [1 ]
机构
[1] Chinese Acad Sci, Shanghai Inst Organ Chem, Shanghai 200032, Peoples R China
关键词
4,4 '-hexafluoroisopropylidene-2,2-bis-(phthalic acid anhydride); diamines; condensation; polyimides oligomers;
D O I
10.1016/S0022-1139(03)00142-8
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
The title product 4,4'-hexafluoroisopropylidene-2,2-bis-(phthalic acid anhydride) was prepared from hexafluoroacetone and o-xylene as the starting materials by condensation, oxidation and dehydration three-step reaction sequence. It reacted with diamines in DMF or xylene to give polyimides by condensation polymerization. Thermal and viscosity analyses show that these polyimides have lower molecular weight but excellent thermal stability. (C) 2003 Elsevier B.V. All rights reserved.
引用
收藏
页码:221 / 225
页数:5
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