Patent ID: 6667367
Filing Date: 2003-12-23
Classification: C08F,C08L

Abstract:
A composition comprising, by weight, the following different components,(1) 100 parts of a graft copolymer composition comprising (a) a graft copolymer comprising a backbone of a propylene polymer material having graft polymerized thereto at least one vinyl monomer capable of being polymerized by free radicals, (b) at least 5% by weight of a rubber component, based on the total weight of the graft copolymer composition, and, (c) about 5% to about 40% of a broad molecular weight distribution propylene polymer material having a molecular weight distribution of 5 to 60, based on the total weight of the graft copolymer composition; (2) about 5 to about 20 parts per hundred parts of the graft copolymer composition of an oxidized polyethylene wax having a melting point of less than 116Â° C. and an acid number of less than 40; (3) about 5 parts to about 20 parts per hundred parts of the graft copolymer composition of a propylene homopolymer or a propylene copolymer with ethylene or a 4-8 C alpha-olefin having an ethylene or alpha-olefin content of about 0.5% to about 20%, grafted with an anhydride of an aliphatic &agr;,&bgr;-unsaturated dicarboxylic acid and having an anhydride content of about 2 to about 5%; (4) a functionalized polymer that is reactive with the anhydride groups of the grafted polymers, selected from the group consisting of: (a) about 2 to about 6 parts per hundred parts of the graft copolymer composition of an amine-terminated polyalkylene glycol; (b) about 2 to about 6 parts per hundred parts of the graft copolymer composition of a hydroxy-terminated polyolefin; (c) about 2 to about 6 parts per hundred parts of the graft copolymer composition of a hydroxy-terminated polybutadiene; (d) about 2 to about 8 parts per hundred parts of the graft copolymer composition of a hydroxy-terminated olefin/alkylene oxide copolymer; (e) about 2 to about 8 parts per hundred parts of the graft copolymer composition of a hydroxy-terminated polyalkylene oxide; (f) about 2 to about 8 parts per hundred parts of the graft copolymer composition of a methoxy-terminated polyalkylene oxide; (g) about 2 to about 8 parts per hundred parts of the graft copolymer composition of an amine-terminated olefin/alkylene oxide copolymer, and (h) mixtures thereof; (5) optionally, about 4 to about 30 parts per hundred parts of the graft copolymer composition of a polyolefin rubber grafted with an anhydride of an aliphatic &agr;,&bgr;-unsaturated dicarboxylic acid, having an anhydride content of at least 0.3% but less than 3% and comprising a polymer of ethylene and a 3-8 C alpha-olefin, optionally containing about 0.5% to about 10% of a diene, having an ethylene content of about 30% to about 70%, with the exception that when the amount of (2)+(3) is equal to or greater than 25 parts per hundred parts of the graft copolymer composition, (5) must be present, and (6) optionally, about 5 to about 20 parts per hundred parts of the graft copolymer composition of an ethylene polymer grafted with an anhydride of an aliphatic &agr;,&bgr;-unsaturated dicarboxylic acid, having an anhydride content of about 1% to about 16% and a number average molecular weight Mn of about 500 to about 5000.