METHOD FOR PRODUCING OLEFIN BLOCK POLYMER USING PLURALITY OF TYPES OF TRANSITION METAL CATALYSTS

摘要

A method for producing an olefin block polymer, the method includes: polymerizing olefin using a polymerization catalyst (X), a polymerization catalyst (Y), and an organometallic compound (C) having an atom of any of Groups 2, 12, and 13 of the periodic table of the elements, the organometallic compound (C) excluding an activating co-catalyst agent (B), wherein: the polymerization catalyst (X) is formed by bringing a transition metal compound (A-X) represented by a general formula (1-X) into contact with an activating co-catalyst agent (B); and the polymerization catalyst (Y) is formed by bringing a transition metal compound (A-Y) represented by a general formula (1-Y) into contact with the activating co-catalyst agent (B).;[Chem. 2];(MLaXbEc)n  (1-Y)

主权项

1. An ethylene/propylene block copolymer composition satisfying all of the following conditions (1) to (5):
(1) to have one or more melting points having 130° C. or more; (2) to have 2.0 or more wt % of HEPBHIS content; (3) to have 80.0 mol % or more but 94.5 mol % or less of HC2′BHIS; (4) to have 0.1 mol % or more but 9.0 mol % or less of LC2′BHIS, and (5) to have 5.0 mol % or less of an absolute value of a difference between the HC2′BHIS and the HC2′BHS.