C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
C08F 36/04 (2006.01) C08F 4/52 (2006.01) C08F 4/54 (2006.01)
Patent
CA 2306220
The invention relates to novel catalysts with a base consisting of compounds of the rare earth metals, comprising a compound of the rare earth metals, a cyclopentadiene and an aluminium oxane. The invention also relates to the use of the novel catalysts for polymerising unsaturated compounds, especially conjugated dienes. A considerably higher proportion of laterally bonded vinyl groups can be obtained in the polymer using the novel catalyst system.
L'invention concerne de nouveaux catalyseurs à base de composés des métaux des terres rares, comprenant un composé des métaux des terres rares, un cyclopentadiène et un oxane d'aluminium. L'invention concerne également l'utilisation de ces nouveaux catalyseurs pour la polymérisation de composés insaturés, notamment celle de diènes conjugués. Ce nouveau système de catalyseurs permet d'obtenir, lors de la polymérisation de diènes conjugués, une part sensiblement plus élevée de groupes vinyle liés situés latéralement, dans le polymère.
Aktiengesellschaft Bayer
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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