Process for making block graft copolymers by grafting halosilanes onto polyolefin/diene polymers

摘要

A method of producing graft block copolymers which comprises (a) grafting a halosilane of the formula HSiXnR3-n wherein X is halogen, R is alkyl or aryl, and n=1-3, onto a alpha -olefin/diene copolymer made from at least one alpha -olefin and at least one diene, (b) anionically polymerizing at least one anionically polymerizable monomer to form living polymer chains, and (c) reacting the products of (a) and (b) together wherein the living polymer chains react with the halosilane groups on the alpha -olefin/diene copolymer and are added thereto as pendant side chains.