Composition and method for making polyimide resin-reinforced fab

Details Composition and method for making polyimide resin-reinforced fab Composition and method for making polyimide resin-reinforced fab

1979-04-06

1981-01-13

Schofer, Joseph L.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

427221, 427379, 528353, C08K 505, C08K 513

Patent

active

042448530

ABSTRACT:
A composition for making polyimide resin-reinforced fibers or fabric. The composition is of the type disclosed in U.S. Pat. No. 3,745,149 and includes a polyfunctional ester, a polyfunctional amine, and an end-capping agent. The composition is impregnated into fibers or fabric and heated to form prepreg material. The tack retention characteristics of this prepreg material are improved by incorporating into the composition a liquid olefinic material compatible with the other ingredients of the composition. The prepreg material is heated at a higher temperature to effect formation of the polyimide resin and the monomeric additive is incorporated in the polyimide polymer structure.

REFERENCES:
patent: 3689464 (1972-09-01), Holub et al.
patent: 3745149 (1973-07-01), Serafini et al.

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