CATALYTIC OLEFIN BLOCK COPOLYMERS WITH CONTROLLED BLOCK SEQUENCE DISTRIBUTION

摘要

PROBLEM TO BE SOLVED: To provide processes of producing catalytic olefin block copolymers (pseudo-block copolymers) having controlled multi-block sequence distribution by continuous processes operated at high temperature.SOLUTION: The present invention provides a process for polymerization of one or more addition polymerizable monomers, and resulting polymer products. A process of producing a pseudo-block copolymer comprises 1) contacting an addition polymerizable monomer or a mixture of monomers under addition polymerization conditions in a reactor or reactor zone with a composition comprising at least one olefin polymerization catalyst and a cocatalyst, and adding a chain shuttling agent to the reaction mixture such that at least some of polymer molecules resulting from formation of polymer chains from the monomers comprise two or more chemically or physically distinguishable blocks or segments.