Catalyst, its production and its use for the gas-phase...

Details Catalyst, its production and its use for the gas-phase... Catalyst, its production and its use for the gas-phase...

C - Chemistry, Metallurgy

08

F

C08F 4/52 (2006.01) C08F 36/04 (2006.01)

Patent

CA 2133526

A CATALYST, ITS PRODUCTION AND ITS USE FOR THE GAS-PHASE POLYMERIZATION OF CONJUGATED DIENES A b s t r a c t Catalysts consisting of A) an alcoholate of the rare earths, a carboxylate of the rare earths, a complex compound of the rare earths with diketones and/or an addition compound of the halides of the rare earths with an oxygen or nitrogen donor compound, B) an aluminium trialkyl, a dialkyl aluminium hydride and/or an alumoxane, C) another Lewis acid and D) an inert, particulate inorganic solid with a speci- fic surface of greater than 10 m2/g (BET) and a pore volume of 0,3 to 15 ml/g are eminently suitable for the polymerization of con- jugated dienes, more particularly butadiene, in the gas phase.

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