Methyl substituted polyimides containing carbonyl and ether conn

Details Methyl substituted polyimides containing carbonyl and ether conn Methyl substituted polyimides containing carbonyl and ether conn

1990-09-28

1992-09-08

Kight, III, John

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From carboxylic acid or derivative thereof

528125, 528128, 528172, 528185, 528352, 564315, 564328, 564422, 564440, 564442, 564443, 564502, 56418, C08G 6926, C08G 802, C08G 7902

Patent

active

051459426

ABSTRACT:
Novel polyimides have been prepared from the reaction of aromatic diahydrides with novel aromatic diamines having carbonyl and ether groups connecting aromatic rings containing pendant methyl groups. The methyl substituent polyimides exhibit good solubility and form tough, strong films. Upon exposure to ultraviolet irradiation and/or heat, the methyl substituted polyimides crosslink to become insoluble.

REFERENCES:
patent: 4820791 (1989-04-01), Hergenrother et al.

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