Extended shelf life prepreg article and method

Details Extended shelf life prepreg article and method Extended shelf life prepreg article and method

1989-12-04

1992-11-24

Ryan, Patrick J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

428265, 428408, 4284111, 428286, 523465, B32B 400

Patent

active

051659891

ABSTRACT:
An essentially tack free prepreg article, characterized by a shelf life at about 25.degree. C. of at least about three months, and method of making the same are provided. The prepreg article comprises at least one network of fibers which has been impregnated with a solution of a resin in styrene and a catalyst. The resin is curable by the catalyst at a temperature above about 90.degree. C. The impregnated network is dried for a length of time and at a temperature sufficient to reduce the styrene content to less than about 1% by weight of the impregnated network without curing the resin. The prepreg article can subsequently be used as a component in a molded composite.

REFERENCES:
Modern Plastics Encyclopedia; (Oct. 1990) (pp. 66-67); article by Richard Miller.

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