General Electric Company

Shashi L Parekh

Erich Otto Teutsch

Roger W Avakian

Popkin Shenian

A process for preparing shaped thermoplastic composite articles of continuous fibrous strand material in a polymeric resin matrix. The shaped composite articles are prepared by a pultrusion process involving contacting the strands with cyclic oligomers, for example cyclic polycarbonate oligomers, and then polymerizing the oligomers into high molecular weight polymer to produce a composite. The process provides for low melt viscosity impregnation of the strands with cyclic oligomers prior to formation of the high molecular weight resin matrix.

Process for making thermoplastic composites with cyclics oligomers and

Articles having acceptable levels of impact strength and physical integrity are provided from mixed scrap plastics by a wet dispersion process. Immiscible plastic particles are locked together by a network of chopped fibers to form a useful article derived from mixed scrap plastics.

Articles from mixed scrap plastics

A process for making polyetherimides involving reacting an aromatic bis(ether anhydride) with an organic diamine in an inert solvent to form a prepolymer solvent mixture, effecting solvent removal by thin-film evaporation, and heating the resulting prepolymer to a temperature above the glass transition temperature of the final polyetherimide product and less than 450.degree. C. to form the polyetherimide.

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Pittsfield, MA, United States of America

Shashi L Parekh