PROPYLENE POLYMER COMPOSITION AND MOLDED ARTICLE THEREOF

摘要

The present invention provides a propylene polymer molded article being high in tensile elongation and scratch resistance and a propylene polymer composition capable of affording such a molded article. Specifically, the present invention provides, in one embodiment thereof, a propylene polymer composition comprising a propylene polymer (A-1) that is a polymer having an intrinsic viscosity, as measured in tetralin at 135° C., of from 1.2 dl/g, inclusive, to 1.7 dl/g, exclusive, or a propylene polymer (A-2) that is a polymer having an intrinsic viscosity, as measured in tetralin at 135° C., of from 1.7 dl/g, inclusive, to 2.9 dl/g, inclusive, a propylene polymer (B) that is a polymer having an intrinsic viscosity, as measured in tetralin at 135° C., of from 0.5 dl/g, inclusive, to 1.1 dl/g, exclusive, and a nucleating agent.

主权项

1. A propylene polymer composition comprising a propylene polymer (A-1) or propylene polymer (A-2) defined below, a propylene polymer (B), and a nucleating agent (C), wherein the content of the propylene polymer (A-1) is 99.95 parts by weight to 55 parts by weight, the content of the propylene polymer (B) is 0.05 parts by weight to 45 parts by weight, and the content of the nucleating agent (C) is 0.001 parts by weight to 5 parts by weight, or the content of the propylene polymer (A-2) is 99.95 parts by weight to 30 parts by weight, the content of the propylene polymer (B) is 0.05 parts by weight to 70 parts by weight, and the content of the nucleating agent (C) is 0.001 parts by weight to 5 parts by weight where the total amount of the propylene polymer (A-1) or propylene polymer (A-2) and the propylene polymer (B) is taken as 100 parts by weight,[Propylene Polymer (A-1)]
a polymer comprising not less than 90% by weight of monomer units derived from propylene where the whole amount of the polymer is taken as 100% by weight, and having an intrinsic viscosity, as measured in tetralin at 135° C., of from 1.2 dl/g, inclusive, to 1.7 dl/g, exclusive;[Propylene Polymer (A-2)]
a polymer comprising not less than 90% by weight of monomer units derived from propylene where the whole amount of the polymer is taken as 100% by weight, and having an intrinsic viscosity, as measured in tetralin at 135° C., of from 1.7 dl/g, inclusive, to 2.9 dl/g, inclusive;[Propylene Polymer (B)]
a polymer comprising not less than 90% by weight of monomer units derived from propylene where the whole amount of the polymer is taken as 100% by weight, and having an intrinsic viscosity, as measured in tetralin at 135° C., of from 0.5 dl/g, inclusive, to 1.1 dl/g, exclusive.