FIELD: chemistry.
SUBSTANCE: nitrile rubber contains repeating structural units of at least one α,β-unsaturated nitrile, at least one conjugated diene and optionally one or more further copolymerisable monomers and (i) has calcium content of at least 150 ppm with respect to nitrile rubber, and chlorine content of at least 40 ppm with respect to nitrile rubber, and (ii) contains terminal 2,2,4,6,6-pentamethylheptane-4-thio- and 2,4,4,6,6-pentamethylheptane-2-thio- and 2,3,4,6,6-pentamethylheptane-2-thio and 2,3,4,6,6-pentamethylheptane-3-thio- groups. Also disclosed is a method of producing nitrile rubber, use thereof, vulcanisable mixtures and method for production thereof, method of producing moulded articles and a moulded article.
EFFECT: obtaining rubber with special content of calcium and chlorine; the rubber has very high stability during storage.
21 cl, 6 tbl, 36 ex
