Ether-linked aryl tetracarboxylic dianhydrides

Details Ether-linked aryl tetracarboxylic dianhydrides Ether-linked aryl tetracarboxylic dianhydrides

C - Chemistry, Metallurgy

07

D

260/364.8

C07D 307/89 (2006.01) C07C 37/045 (2006.01) C07C 37/05 (2006.01) C07C 65/24 (2006.01) C08G 73/10 (2006.01)

Patent

CA 1049025

ABSTRACT OF THE DISCLOSURE Novel dianhydrides having the formula: Image have been found which when reacted with diamines provide polyimides exhibiting excellent thermal, oxidative and hydrol- ytic stability and good tensile strength and elongation, which characteristics makes the polyimides useful as sealants in advanced aerospace structures.

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