Patent ID: 6211300
Filing Date: 2001-04-03
Classification: C08L

Abstract:
A propylene-ethylene block copolymer composition which comprises0.01 to 10% by weight of an A-B propylene-ethylene block copolymer (C) having an intrinsic viscosity of [.eta.].gtoreq.0.2 dl/g as measured in a tetralin solvent at 135.degree. C., comprising of a polypropylene segment (A) and an ethylene-propylene random copolymer segment (B), and99.99 to 90% by weight of a propylene polymer (D),wherein the A-B propylene-ethylene block copolymer (C) comprises 5 to 80% by weight of the ethylene-propylene random copolymer segment (B) having an ethylene content of 10 to 90% by weight and the propylene polymer (D) comprises 60 to 95% by weight of a homopolymer of propylene or a copolymer of propylene containing a copolymerizable monomer therewith (D1) and 40 to 5% by weight of an ethylene-propylene random copolymer (D2).