Patent ID: 9593194
Date: 2017-03-14
CPC Classifications: C08F,C08L

Claim:
1. A method for producing an olefin block polymer, the method comprising: polymerizing olefins using a polymerization catalyst (X) and an organometallic compound (C) containing 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) into contact with the activating co-catalyst agent (B), and the transition metal compound (A) is represented by the following general formula (1), where n is 1, 2, or 3; M R the alkyl groups, the cycloalkyl groups, the alkenyl groups, the alkynyl groups, the aralkyl groups, the aryl groups, the alkoxy groups, the aralkyloxy groups, the aryloxy groups, and the heterocyclic compound residues represented by R notwithstanding the above definitions of R each X the alkyl group, the cycloalkyl group, the alkenyl group, the aralkyl group, the aryl group, the alkoxy group, the aralkyloxy group, the aryloxy group, and the carboxylate group represented by X X E the activating co-catalyst agent (B) is selected from among an organoaluminumoxy compound (B-1), an organoboron compound (B-2), a zinc co-catalyst component (B-3), and ion-exchange layered silicate (B-4), wherein the olefin block polymer is an ethylene/propylene copolymer composition that satisfies the following requirements (1) through (5): (1) EP (2) ΔEP≦20%; (3) 15.0≧M (4) (T (5) (T EP ΔEP is an arithmetic mean of absolute values of ratio differences of five triads, excluding PPP (propylene triad), each of the ratio differences being a difference between a ratio of one of the five triads in the room-temperature xylene-insoluble component and a ratio of the triad in the room-temperature xylene-soluble component; M T T