Patent ID: 6239221
Filing Date: 2001-05-29
Classification: C08L

Abstract:
A composition comprising:(a) an olefin rubber grafted with a vinyl aromatic monomer and an unsaturated nitrile monomer and optionally one or more compatible comonomers;(b) an ungrafted olefin rubber selected from the group consisting of EP rubbers and EPDM rubbers;(c) a matrix polymer prepared from a vinyl aromatic monomer and an unsaturated nitrile monomer and optionally one or more compatible monomers; and(d) optionally an acrylate rubber grafted with a vinyl aromatic monomer and an unsaturated nitrile monomer and optionally one or more compatible comonomers;wherein (c) is present in an amount of 49.2 to 70 percent relative to the weight of the composition and the total amount of rubber in the composition is in the range of from about 20% to about 30% by weight based on the total weight of the composition and wherein the weight ratio of the amount of rubber in component (b) and component (a) is in the range of from 1/3 to 1/1 with the proviso that when component (d) is present in the composition then the weight ratio of the amount of rubber in component (b) and component (a) is in the range of from 1/3 to 3/1 and the total amount of rubber in the composition is from about 5% to about 30% by weight and wherein the composition has a gloss value of less than 50 as determined by ASTM D-523 and an Izod impact value at 23.degree. C. of greater than 50 J/m as determined on a sample 1.27 cm.times.1.27 cm as determined by ASTM D-256.