C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
C08F 4/52 (2006.01) C08F 4/54 (2006.01) C08F 36/04 (2006.01)
Patent
CA 2217148
Catalysts consisting of: A) a rare earth alcoholate, a rare carboxylate and/or a complex compound of rare earths with diketones; B) an alumoxane; and C) an inert particulate inorganic solid with a specific area of more than 10 m2/g and a pore volume of 0.3 to 15 ml/g are especially suitable for the polymerisation of conjugated dienes, especially butadiene, in the gas phase.
L'invention concerne des catalyseurs comprenant: A) un alcoolat de terres rares, un carboxylat de terres rares et/ou un complexe composé de terres rares et de dicétones; B) un alumoxane; et C) une substance solide inerte, particulaire, inorganique ayant une surface spécifique supérieure à 10 m?2¿/g et un volume poreux compris entre 0,3 et 15 ml/g. Ces catalyseurs s'utilisent de préférence dans la polymérisation de diènes conjugués, notamment de butadiène, en phase gazeuse.
Eberstein Christopher
Garmatter Birgit
Marquardt Peter
Reichert Karl-Heinz
Sylvester Gerd
Aktiengesellschaft Bayer
Fetherstonhaugh & Co.
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