Blends of high nitrile resins and hydrophobic nylons

Claim 1

A polymer composition comprising a blend of (i) a polymer produced by polymerizing a major proportion of a monounsaturated nitrile, a minor proportion of another monovinyl monomer copolymerizable therewith optionally in the presence of a diene rubber, and (ii) a polyamide selected from the group consisting of nylon-11, nylon-12 and cyclic nylons wherein said cyclic nylon is prepared by reacting a dicarboxylic acid or acid chloride thereof with a diamine where at least one of said reactants is a cyclic compound, wherein (i) is a high nitrile copolymer prepared by the polymerization of 100 parts by weight of (a) from 60% to 90% by weight of at least one nitrile having the structure: ##STR15## wherein R is hydrogen, a lower alkyl group having from 1 to 4 carbon atoms, or a halogen, and (B) from 10% to 40% by weight based on the combined weights of (A) and (B) of at least one member selected from the group consisting of (1) an ester having the structure: ##STR16## wherein R is hydrogen, an alkyl group having from 1 to 30 carbon atoms, or a halogen, and R 2 is an alkyl group having from 1 to 6 carbon atoms, (2) an alpha-olefin having the structure: ##STR17## wherein R 3 and R 4 are alkyl groups having from 1 to 7 carbon atoms, (3) a vinyl ether selected from the group consisting of methyl vinyl ether, ethyl vinyl ether, the propyl vinyl ethers, and the butyl vinyl ethers, (4) vinyl acetate, (5) styrene, and (6) indene, in the presence of from 0 to 40 parts by weight of (C) a rubbery polymer of a conjugated diene monomer selected from the group consisting of butadiene and isoprene and a comonomer selected from the group consisting of styrene, a monomer having the structure: ##STR18## wherein R has the foregoing designation, and an ester having the structure: ##STR19## wherein R 1 and R 2 have the foregoing respective designations, said rubbery polymer containing from 50% to 100% by weight of polymerized conjugated diene and from 0% to 40% by weight of comonomer.