Theromoplastic blends containing graft copolymers of polyacrylates as impact modifiers

A thermoplastic blend consisting essentially of, by weight, (A) 30 to 90% of a propylene polymer material grafted with a polymerizable monomer(s) of a polymer(s) having a Tg greater than 80.degree. C. and polymerized monomer(s) content of 5 to 70% selected from the group consisting of styrene, styrene/methyl methacrylate, styrene/methacrylic acid and styrene/acrylonitrile, (B) 10 to 70% of propylene polymer material grafted with a polymerizable monomer(s) of a polymer(s) having a Tg less than 20 .degree. C. and a polymerized monomer content of 5 to 50% selected from the group consisting of butyl acrylate, butylacrylate/butyl methacrylate and butyl acrylate/ethylhexyl acrylate and (c) 5 to 20% of at least one other rubber modifier, wherein the total amount of (B)+(C) is from 10 to 70% by weight based on the total blend.

The blend of claim 13, wherein said at least one other rubber modifier is selected from the group consisting of (i) an olefin rubber containing 2 or more monomers selected from ethylene, propylene or butene, and optionally a non-conjugated diene, (ii) one or more monoalkenyl aromatic hydrocarbon-conjugated diene block copolymer of hydrogenated products thereof having a number average molecular weight of from 45,000 to 260,000 and monoalkenyl aromatic hydrocarbon monomer content of from 5 to 50% and mixtures of (i) and (ii).