Patent ID: 6773820
Filing Date: 2004-08-10
Classification: B32B,C08J,C08L,Y10S,Y10T

Abstract:
A polymer blend of at least four polymers comprising:at least 10% by weight, based upon the weight of the blend, of a first polymer having a melting point between 55 to 75Â° C. comprising a copolymer selected from the group consisting of a copolymer of ethylene and at least one &agr;-olefin, said copolymer having a melt index of up to 1.0 dg/min according to ASTMT D-1238 at 190Â° C., and a copolymer of ethylene and at least one C6 to C10 &agr;-olefin; at least 10% by weight, based upon the weight of the blend, of a second polymer having a melting point between 85 to 110Â° C. comprising a copolymer of ethylene and at least one &agr;-olefin; at least 10% by weight, based upon the weight of the blend, of a third polymer having a melting point between 115 to 130Â° C. consisting of a thermoplastic polymer selected from the group consisting of LDPE, HDPE, LLDPE, propylene copolymers, and a copolymer having a density of 0.900 to 0.915 g/cm3 consisting of ethylene and at least one &agr;-olefin; and a fourth polymer having a melting point between 80 to 105Â° C.