PROCESS FOR THE PRODUCTION OF HIGH MOLECULAR WEIGHT UNSATURATED HYDROCARBON POLYMERS HAVING AN INCREASED PROPORTION OF VINYL GROUPS AND/OR SUBSTITUTED VINYL GROUPS

摘要

1513879 Cobalt-containing diene polymerization catalyst CHEMISCHE WERKE HULS AG 2 Oct 1975 [3 Oct 1974] 40291/75 Heading C3P Conjugated dienes are polymerized in the presence of a catalyst comprising (a) a cobalt compound, (b) an organoaluminium compound and (c) a phosphorus compound of the formula (RO)3P, where each R is an optionally halogenated and/or alkylated diaryl or condensed aryl group or a halogenated monocyclic aryl group, and optionally (d) an H-acid compound. The catalyst favours the production of diene units with side-chain unsaturation. The examples refer to the production of polybutadiene or polyisoprene using as (c) tris(2- or 1-naphtyl)- phosphite, tris(2 - chlorophenyl)phosphite, or tris(o - phenyl - phenyl)phosphite, and in most cases (d) H2O.