Patent ID: 6806316
Filing Date: 2004-10-19
Classification: C08F,C08J,C08L,Y10T

Abstract:
A crystalline propylene polymer composition comprising:(a) from 10 to 90 weight percent of a crystalline propylene homopolymer composition comprising a first propylene homopolymer and a second propylene homopolymer; and (b) from 90 to 10 weight percent of a crystalline propylene copolymer composition comprising a first propylene copolymer and a second propylene copolymer, the first propylene copolymer and second propylene copolymer comprising from 0.05 to 15 weight percent of a comonomer based on the total weight of the crystalline propylene polymer composition; wherein the crystalline propylene polymer composition has a molecular weight distribution (Mw/Mn) in the range of from 2.1 to 10; and wherein the propylene homopolymer composition and the propylene copolymer composition are obtained in separate stages using a single metallocene catalyst system comprising two different metallocene catalyst components.