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Preparation and characterization of polyimide alternating copolymers incorporating N,N′-bis-(4-anilino)-1,2,4,5-benzene bis(dicarboximide)

✍ Scribed by Andrew J. McKerrow; Marye Anne Fox; Jihperng Leu; Paul S. Ho

Publisher
John Wiley and Sons
Year
1997
Tongue
English
Weight
811 KB
Volume
35
Category
Article
ISSN
0887-624X

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✦ Synopsis

SYNOPSIS

N, N'-Di-(4-anilino )-l ,2,4,5-benzene bis(dicarboximide) was prepared in a three-step synthesis and purified by heating the resulting solid to 2000C. Condensation of the diaminodiimide with several dianhydrides (BPDA, BTDA, and 6-FDA) yielded polyamic acid-imides that could be either thermally or chemically cured to the corresponding alternating copo-Iyimides. Imidization of the polyamic acid-imide to the final polyimide was monitored by FTIR for samples coated on silicon wafers before being thermally cured. Polyamides prepared by chemical imidization were found by thermogravimetric analysis to be stable to temperatures of 600°C. u 1997 ~John Wiley & Sons, Inc.

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