A process for the hydrogenation in solution of the double bonds of the polymers of conjugiesten are used, and resulting hydrogenated block copolymers

摘要

DISOLUCION hydrogenation process of the double bonds of polymers in conjugated dienes and hydrogenated block copolymer OCCURRED. Hydrogenation process polymer solution Conjugated dienes IN THE PRESENCE OF CATALYSTS HOMOGENEOUS CONTAINING as an essential component, a titanocene TYPE CPSI2 SCTi (PHOR) SI2 SC wherein Cp is a cyclopentadienyl group, PH a phenyl group AND WHERE OR IS A GROUP alkoxide 1 to 4 carbon atoms, OR TYPE titanocene CPSI2 SCTIRSI2 SC, where R is a GROUP CHSI2 SCPPHSI2 SC. These catalysts are very active in the selective hydrogenation of double bonds UNITS DIENOS polymers and copolymers of conjugated dienes, DE number average molecular weight between about 500 and 1,000,000 and, in particular, random copolymers and BLOCK styrene butadiene or isoprene, containing at least one block SECONDS styrene block polybutadiene and / or polyisoprene.