Phillips Petroleum Company

Other

Charles W Moberly

Melvin B Welch

Lawrence M Fodor

Harold Wayne Hill, Jr

A method for treating arylene sulfide polymer in which the polymer is melted and the hot melt stirred in a vessel while contacting the polymer with oxygen for a time sufficient to obtain a product of increased viscosity. In an embodiment of the invention, the product of increased viscosity is transferred to an extruder where contact of the melted polymer with oxygen is continued further to increase the viscosity of the material.

Melt curing arylene sulfide polymers with oxygen

Undesirable color formation during the preparation of a cured intumescent flame retardant is minimized by including a color stabilizing amount of at least one of certain metal phosphites, hypophosphites, sulfites and bisulfites.

Color stabilization of flame retardant

Alpha olefins are polymerized employing a catalyst which forms on mixing a first component resulting from admixture of a halogenated titanium compound and a magnesium or manganese halide; a second component which is an organoaluminum compound; a third component which is a Lewis base; and a fourth component which is an organoaluminum monohalide.

Catalyst and a polymerization process employing the catalyst

Resinous graft copolymers useful in adhesive formulations are prepared by polymerization of an alkoxystyrene with an olefinically unsaturated nitrile in a solution or dispersion of a rubber. The polymeric compositions can be applied to surfaces as a hot melt adhesive or solvent cement. Laminates formed with the resinous graft copolymers exhibit substantial lap shear strength.

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Bartlesville, OK, United States of America

Charles W Moberly