Carbon-fiber-reinforced polyimide resin compositions

Details Carbon-fiber-reinforced polyimide resin compositions Carbon-fiber-reinforced polyimide resin compositions

1990-02-15

1992-02-11

Morgan, Kriellion S.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

C08K 900

Patent

active

050876449

ABSTRACT:
Provided are carbon-fiber-reinforced polyimide resin compositions having excellent mechanical strength. The compositions are formed of (a) 5-50 parts by weight of carbon fibers, which have been obtained by coating starting carbon fibers at surfaces thereof with an aromatic polysulfone resin and then heating the thus-coated carbon fibers at 300.degree.-400.degree. C., and (b) 95-50 parts by weight of a polyimide resin which perferably have recurring units of following formula: ##STR1## wherein X represents a specific divalent radical and R represents a particular tetra-valent radical.

REFERENCES:
patent: 4340697 (1982-07-01), Aya et al.
patent: 4664768 (1987-05-01), Scala et al.
patent: 4931531 (1990-06-01), Tamai et al.
patent: 4943594 (1990-07-01), Ezawa et al.
patent: 4978692 (1990-12-01), Ezawa et al.

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