Product

Claim 1

A composition comprising a blend of, A. a linear polyamide selected from the group consisting of poly(4,4'-methylenediphenylene azelamide), poly(4,4'-methylenediphenylene sebacamide), poly(4,4'-methylenediphenylene undecanediamide), poly(4,4'-methylenediphenylene dodecanediamide), and mixtures thereof, said polyamide characterized in that it has been prepared by the reaction of 4,4'-methylenebis(phenyl isocyanate) and the corresponding dicarboxylic acid or by the reaction of 4,4'-methylenebis(aniline) and the corresponding dicarboxylic acid dihalide, said polyamide being further characterized by an inherent viscosity of from about 0.5 to about 1.5 determined as a 0.5 percent by weight solution in N-methylpyrrolidone containing about 4 percent by weight lithium chloride at 30° C.; and B. at least one material selected from the group consisting of, (i) sodium benzenesulfonate, (ii) polyethylene ionomers, (iii) methacrylated butadiene-styrene polymers, and (iv) multi-phase composite interpolymers comprising: (a) about 25 to 95 weight percent of a first elastomeric phase polymerized from a monomer system comprising about 90 to 99.8 percent by weight of a C 1 to C 6 alkyl acrylate, 0.1 to 5 weight percent of a crosslinking monomer, 0.1 to 5 weight percent of a graftlinking monomer, said crosslinking monomer being a polyethylenically unsaturated monomer having a plurality of addition polymerizable reactive groups all of which polymerize at substantially the same rate of reaction, and said graft-linking monomer being a polyethylenically unsaturated monomer having a plurality of addition polymerizable reactive groups, at least one of which polymerizes at a substantially different rate of polymerization from at least one other of said reactive groups; and (b) about 75 to 5 weight percent of a final, rigid thermoplastic phase which is polymerized in the presence of said elastomeric phase and which is free of epoxy groups said material (B) being present in an amount at least sufficient to promote the crystallization of said linear polyamide (A).