Catalyst system for high-cis polybutadiene

Details Catalyst system for high-cis polybutadiene Catalyst system for high-cis polybutadiene

C - Chemistry, Metallurgy

08

F

C08F 4/26 (2006.01) C08F 136/06 (2006.01)

Patent

CA 2425441

A catalyst system suitable for use in the production of high cis polybutadiene is disclosed. The catalyst system includes a cobalt salt of the formula CoAx, where A is a monovalent or divalent anion and x is 1 or 2; an alkyl aluminum chloride compound of the structure R2A1C1, where R is an alkyl group containing 2-8 carbon atoms; a trialkyl aluminum compound of the formula R3A1, where R is an alkyl group containing 2-8 carbon atoms; and a catalytic amount of water.

L'invention concerne un système catalyseur servant à la fabrication de polybutadiène à caractère cis élevé. Ledit système catalyseur est composé d'un sel de cobalt de formule CoA¿x?, A étant un anion monovalent ou bivalent, et x étant 1 ou 2 ; d'un composé chlorure d'aluminium-alkyl R¿2?AlCl, R étant un groupe alkyl contenant 2 à 8 atomes de carbone ; d'un composé aluminium-trialkyl de formule R¿3?Al, R étant un groupe alkyl contenant 2 à 8 atomes de carbone ; et, d'une quantité catalytique d'eau.

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