Patent ID: 11905347
Assignee: W.R. GRACE & CO.—CONN.
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C | IPC C

Claim 0:
1. A propylene-ethylene copolymer having high flow characteristics, wherein the propylene-ethylene copolymer comprises:
a propylene content of greater than 90% by weight, the propylene-ethylene copolymer has an ethylene content (ET) in an amount of from 2.0% to 5.0% by weight, and
wherein the propylene-ethylene copolymer has a xylene solubles fraction (XS) such that the propylene-ethylene copolymer has a xylene solubles to ethylene content ratio (XS/ET) of less than 1.51, and wherein the propylene-ethylene copolymer has a melt flow rate of greater than 45 g/10 min at a temperature of 230° C. and at a load of 2.16 kg, the and wherein propylene-ethylene copolymer has a molecular weight distribution (Mw/Mn) of greater than 2.8.