In the blending of a polymer of chloroprene with a lesser proportion of a diene/nitrile rubbery copolymer, a composition of much improved processing, as for example ease of handling on a mill and uniformity of mixing, is obtained when the nitrile copolymer is selected as a copolymer of about 55-80 mole % of a 2-alkyl butadiene-1,3 and about 20-45 mole % of an acrylic nitrile.
This application is a continuation of application Ser. No. 212,701 filed Dec. 27, 1971 now abandoned which in turn is a continuation-in-part of application Ser. No. 799,934 filed Nov. 17, 1969 and now abandoned.
