Patent ID: 6110986
Filing Date: 2000-08-29
Classification: C08F,C08L

Abstract:
A Propylene-based polymer composition, consisting essentially of crystalline propylene-based polymers (A) and (B), said crystalline propylene-based polymers (A) and (B) being obtained by polymerizing propylene or monomers mainly comprised of propylene to produce said crystalline propylene-based polymer (A) having an intrinsic viscosity of 5 dl/g or more in the first stage, and successively polymerizing propylene or monomers mainly comprised of propylene to produce said crystalline propylene-based polymer (B) having an intrinsic viscosity of less than 3 dl/g in the second stage, wherein the content of said propylene-based polymer(A) in the total propylene-based polymers (A) and (B) is in the range of 0.05% by weight or more and less than 25% by weight, the intrinsic viscosity of the total propylene-based polymer (A) and (B) is less than 3 dl/g, and the ratio of a weight average molecular weight to a number average molecular weight of the total propylene-based polymers (A) and (B) is less than 10.