Dynamically cured thermoplastic olefin polymers
AssigneeExxon Research & Engineering Co.
InventorsRobert C. Puydak, Donald R. Hazelton
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Abstract
Thermoplastic compositions useful as molded parts including automotive hoses and exterior body parts which exhibit good flow and good surface characteristics in injection molded parts. The compositions comprise equal proportions of a polyolefin, a halogenated butyl rubber and polychloroprene wherein the rubbers have been dynamically vulcanized to a fully cured state in the presence of the polyolefin.
Claims31
A thermoplastic composition comprising a polymer blend wherein the polymer blend comprises a polyolefin resin, a halogenated butyl rubber and a polychloroprene rubber, said rubbers being co-vulcanized by dynamic vulcanization in the presence of the polyolefin resin.
A method for preparing compatible blends of a polyolefin resin and polychloroprene rubber wherein said polychloroprene rubber is incompatible with said polyolefin resin, which comprises blending the polyolefin resin and polychloroprene rubber with a halogenated butyl rubber wherein said halogenated butyl rubber is compatible with said resin, said rubbers being co-vulcanized by dynamic vulcanization in the presence of said polyolefin resin.
Dependencies are inferred from the claim text.