METHOD FOR PRODUCTION OF MODIFIED CIS-1,4-POLYISOPRENE

摘要

FIELD: polymers, rubber industry, in particular production of stereoblock polymers of conjugated dienes, such as cis-1,4-polyisoprene. ^ SUBSTANCE: modified cis-1,4-polyisoprene is obtained by polymerization pf isoprene in isopentane medium in presence of Ziegler-Natta catalyst. Then catalyst is deactivated; polymer is stabilized and modified with nitrogen-containing compound; polymer in isolated and dried. As nitrogen-containing compound reaction product of maleic anhydride and N-alkyl-N'-phenyl-n-phenylenediamine in amount of 0.5-2 % based on polymer is used. ^ EFFECT: simplified method for production of polymers having heat oxidative stability. ^ 1 tbl, 1 ex