Copolyimides from tetramethylcyclobutane-1,2,3,4-tetracarboxylic

Details Copolyimides from tetramethylcyclobutane-1,2,3,4-tetracarboxylic Copolyimides from tetramethylcyclobutane-1,2,3,4-tetracarboxylic

1981-07-24

1982-11-09

Lee, Lester L.

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524494, 528125, 528128, 528188, 528189, 528206, 528208, 528220, 528229, 528352, 528353, C08G 7310

Patent

active

043585620

ABSTRACT:
Novel copolyimides and molding compositions are prepared from tetramethylcyclobutane-1,2,3,4-tetracarboxylic dianhydride and mixtures of diamines. Also glass and graphite filled polyimides are prepared. The polyimides 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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