Disubstituted aromatic dianhydrides and polyimides prepared...

Details Disubstituted aromatic dianhydrides and polyimides prepared... Disubstituted aromatic dianhydrides and polyimides prepared...

C - Chemistry, Metallurgy

07

D

117/196, 402/221

C07D 307/89 (2006.01) C07C 65/34 (2006.01) C08G 73/10 (2006.01) G03C 5/30 (2006.01)

Patent

CA 2034384

K-17926/17927/+/CGC 1462 DISUBSTITUTED AROMATIC DIANHYDRIDES AND POLYIMIDES PREPARED THEREFROM Abstract of the Disclosure Aromatic dianhydrides being substituted in the positions ortho to the bridging moiety, said substituent groups including halogen, alkyl, hydroxy, nitro, cyano, ester, alkoxy, perfluoroalkyl, mercapto and thioester groups, said dianhydrides providing certain beneficial properties to polyimides prepared therefrom.

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