Disubstituted aromatic dianhydrides

Details Disubstituted aromatic dianhydrides Disubstituted aromatic dianhydrides

1990-01-19

1991-12-31

Shen, Cecilia

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

549241, C07D30789

Patent

active

050774158

ABSTRACT:
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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