| 简介 |
FIELD : polymerization reaction catalysts.SUBSTANCE : catalyst, which may be useful in production of cis-1, 4-polymers and cis-1, 4-copolymers in synthetic rubber industry, is prepared by mixing, in hydrocarbon solvent, rare-earth element compound, conjugated diene, alkylation agent, and halogen source, said halogen source being aryldimethyl halides or their mixtures with alkylaluminum chlorides. Process is carried out at molar ratio 1 : (1-100) : (10-100) : (0.3-3), respectively.EFFECT : increased catalytic activity and enabled production of low-dispersity polymers characterized by good performance properties resulting in a high level of physicochemical characteristics of rubber manufactured from these polymers.2 cl, 1 tbl |
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