Fiber-reinforced composites comprising amide-imide copolymer mat

Details Fiber-reinforced composites comprising amide-imide copolymer mat Fiber-reinforced composites comprising amide-imide copolymer mat

1989-08-24

1992-07-21

Michl, Paul R.

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

Synthetic resins

From carboxylic acid or derivative thereof

528125, 528126, 528229, 524494, 524495, 524496, C08G 802, C08G 1200, C08G 6926, C08K 340

Patent

active

051323940

ABSTRACT:
Composites comprising polyamide-imide matrix resins derived from trimellitic acid compounds and an aromatic diamine are improved in moisture resistance when from 10 to about 90 mole % of the trimellitic acid compounds are replaced by biphenyl tetracarboxylic acid compounds.

REFERENCES:
patent: 4448957 (1984-05-01), Nagaoka
patent: 4861855 (1989-08-01), Bockrath et al.
patent: 4970292 (1990-11-01), Bockrath et al.

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