Copolyimides from aliphatic and aromatic anhydrides and diamines

Details Copolyimides from aliphatic and aromatic anhydrides and diamines Copolyimides from aliphatic and aromatic anhydrides and diamines

1981-07-24

1982-12-28

Lee, Lester L.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528125, 528128, 528188, 528206, 528208, 528220, 528229, 528352, 528353, C08G 7310

Patent

active

043663044

ABSTRACT:
Novel copolyimides are prepared from mixtures of tetramethyl-cyclobutane-1,2,3,4-tetracarboxylic dianhydride and other aliphatic and aromatic dianhydrides. Their dianhydride mixtures are reacted with aliphatic or aromatic diamines to form copolyimides which are useful as engineering plastics.

REFERENCES:
patent: 2489725 (1970-01-01), Lucas
patent: 3073784 (1963-01-01), Endrey
Nakanishi et al., Polymers, 14, 440, (1973).

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