Polymerisation of butadiene

C - Chemistry – Metallurgy – 08 – F

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402/446, 252/56

C08F 4/52 (2006.01) C08F 36/06 (2006.01) C08F 136/06 (2006.01)

Patent

CA 2006327

A process for preparing a catalyst for the polymerisation of butadiene to obtain a polymer containing a very high content of cis isomer in which a specified neodymium carboxylate, an aluminium hydrocarbyl or aluminium hydrocarbyl hydride and a source of halogen are contacted using a particular procedure.

Méthode de préparation d'un catalyseur pour la polymérisation de butadiène, permettant d'obtenir un polymère avec une teneur très élevée en isomère cis; la méthode consiste à mettre en contact, grâce à une procédure particulière, un carboxylate de néodyme spécifique, un aluminium-hydrocarbyle ou un hydrure d'aluminium-hydrocarbyle et une source d'halogène.

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