Pseudo-block copolymers and reversible chain transfer agent (chainshuttlingagent) method using a

摘要

PROBLEM TO BE SOLVED: To produce a block copolymer catalytically, namely by a method for producing two or more polymer molecules per molecule of a concomitantly used catalyst or initiator.;SOLUTION: The provided method is a method for forming a copolymer including multiple regions or segments having differentiated polymer compositions or characteristics by polymerizing at least one type of addition-polymerizable monomer and comprises a step of contacting the addition-polymerizable monomer or a mixture of the corresponding monomers with a composition including at least one type of olefin polymerization catalyst, a cocatalyst, and a reversible chain shuttling agent under addition polymerization conditions so as to form at least several growable polymer chains in a state where two or more blocks or segments formed within at least several of the produced polymers can be chemically or physically discriminated under differentiated process conditions.;COPYRIGHT: (C)2014,JPO&INPIT