Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof
Patent
1990-12-21
1993-09-07
Foelak, Morton
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From carboxylic acid or derivative thereof
528125, 528126, 528128, 528170, 528171, 528173, 528174, 528179, 528185, 528188, 528220, 528229, 528332, 528350, 528352, 525432, 524600, C08G 7314, C08G 6926, C08G 802
Patent
active
052430243
ABSTRACT:
Improved imide-containing copolymers comprising, in the aromatic diamine component, p-phenylene diamine and at least one additional aromatic diamine have increased rigidity and useful processability. The copolymers of this invention also may exhibit improved resistance to the detrimental effects of humid environments and retain mechanical properties at elevated temperatures after exposure to humid environments.
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Bockrath Ronald E.
Gordon Edward J.
Amoco Corporation
Foelak Morton
Hampton-Hightower P.
Hensley Stephen L.
Schlott Richard J.
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