The Standard Oil Company

Sohio

John F Jones

George S Li

Russell K Griffith

William M Giffen, Jr

Gary W Dirks

Molded fiber-reinforced thermoplastic articles are prepared by a novel two-step process involving an in situ polymerization of monomers onto the fiber followed by compression molding of the product.

Method for manufacturing a fiber-reinforced thermoplastic molded article

Polymeric compositions having high softening temperatures, good gas barrier properties and low creep properties are composed of an olefinically unsaturated nitrile, another monovinyl component and maleic anhydride and optionally a diene monomer.

High nitrile resins containing maleic anhydride

Blends of high-acrylonitrile thermoplastic copolymers with acrylonitrile-indene copolymers have improved softening temperatures, improved gas barrier properties and other improved physical properties.

Thermoplastic nitrile resin blends

Polymers which are water swellable in the form of their salts are prepared by polymerization of a monomeric mixture of maleic anhydride, indene and a cross-linking monomer containing a plurality of CH.sub.2 .dbd.C&lt; groupings.

Cross-linked water-swellable indene-maleic anhydride interpolymers

Impact-resistant polymers which have low permeability to gases and vapors are prepared by polymerizing an olefinic nitrile, such as acrylonitrile, optionally with an acrylic ester, such as methyl acrylate, to at least about 70% conversion, and then introducing into the polymerization reaction medium a conjugated diene monomer, such as butadiene-1,3, and completing the polymerization reaction in the presence of said diene monomer.

Manufacture of impact-resistant olefinic-nitrile copolymers

Impact-resistant polymers, which have low permeability to gases and vapors, are prepared by polymerizing methacrylonitrile with styrene to at least about 70% conversion and then introducing into the polymerization reaction medium a conjugated diene monomer, such as butadiene-1,3 and optionally styrene or methacrylonitrile, and completing the polymerization reaction.

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Cuyahoga Falls, OH, United States of America

John F Jones