Patent ID: 6509106
Filing Date: 2003-01-21
Classification: C08L,Y10T

Abstract:
A polymer blend composition comprising:(a) from about 25 to about 40 weight percent based on the weight of the composition, of a first copolymer of ethylene and a C3-C10 alpha-olefin comonomer having a melt index, at 190Â° C., of about 0.5 to about 10 dg/min., a swell ratio of about 1.0 to about 1.2, an annealed density of about 0.90 to about 0.93 g/cc, and a polydispersity index of about 1 to about 4; (b) from about 25 to about 40 weight percent, based on the weight of the composition, of a first homopolymer of ethylene or a second copolymer of ethylene and a C3-C10 alpha-olefin comonomer wherein the first homopolymer of ethylene and the second ethylene-alpha-olefin copolymer have an annealed density of at least 0.940 g/cc to about 0.97 g/cc, and a melt index at 190Â° C., of from about 6 to about 20 dg/min.; and (c) from about 25 to about 40 weight percent, based on the weight of the composition, of a second homopolymer of ethylene having a polydispersity index greater than 9 to about 12, a melt index, at 190Â° C., of from about 3 to about 40 dg/min., and an annealed density of from about 0.90 to about 0.93 g/cc.