Patent ID: 7745544
Filing Date: 2010-06-29
Classification: C08C,C08F

Abstract:
1. A process for preparing an epoxidized α-olefin/diene copolymer material, wherein said process comprises contacting in a reaction medium a) an amorphous copolymeric precursor component having an Mw of from 170,000 to 1,000,000 comprising copolymers of an α-olefin and from about 15-45 mole % of diene derived comonomer, which copolymers contain at least one double bond in each diene-derived co-monomer, with b) a hydrogen peroxide epoxidizing agent, in the presence of an alkyl-trioxo-rhenium-based catalyst, under reaction conditions which promote formation of oxirane rings at the sites of the diene-derived co-monomer double bonds, wherein the alkyl-tri-oxo-rhenium catalyst is added to said reaction medium at a concentration of from about 0.0001 to about 1 mole of alkyl-tri-oxo-rhenium catalyst per mole of unsaturated copolymer double bonds in the copolymeric precursor component.