Blends of a graft copolymer of propylene polymer material with a graft copolymer of olefinic rubber material

A thermoplastic blend consisting essentially of, by weight, (A) 40 to 90% of a graft copolymer of a propylene polymer material selected from the group consisting of (i) a homopolymer of propylene, (ii) a random copolymer of propylene and an olefin selected from the group consisting of ethylene and 4-10 carbon alpha-olefins, wherein when the olefin is ethylene, the maximum polymerized ethylene content is about 10%, and when the olefin is a 4-10 carbon alpha-olefin, the maximum polymerized content thereof is about 20%, and (iii) a random terpolymer of propylene with two alpha-olefins selected from the group consisting of ethylene and 4-8 carbon alpha-olefins, wherein the maximum polymerized 4-8 carbon alpha-olefin content is about 20%, and when ethylene is one of the alpha-olefins, the maximum polymerized ethylene content is about 5%, having 5 to 70% monomer graft polymerized thereto, (B) 5 to 40% of a graft copolymer of an olefin rubber copolymer having 5 to 50% monomer graft polymerized thereto, and (C) 5 to 20% of an ungrafted olefin rubber, wherein the grafting monomers are selected from the group consisting of (i) an aromatic vinyl compound, (ii) an acrylic compound, (iii) mixtures of (i) and (ii), and (iv) other polymerizable monomers selected from the group consisting of C.sub.1 -C.sub.10 linear or branched alkyl acrylates, acrylic acid, methacrylic acid, glycidyl methacrylate, glycidyl acrylate, acrylonitrile and methacrylonitrile with at least one (i) or at least one (ii) or mixtures of at least one (i) and at least one (ii) wherein said other polymerizable monomer is present in an amount of up to 50% and the total amount of (B)+(C) is from 10 to 60% of the total blend.