Compounds of the rare earths and their use as polymerisation...

Details Compounds of the rare earths and their use as polymerisation... Compounds of the rare earths and their use as polymerisation...

C - Chemistry, Metallurgy

08

F

C08F 4/52 (2006.01) B01J 31/22 (2006.01) C08F 36/04 (2006.01)

Patent

CA 2237369

The present invention relates to a new catalyst based on allyl complexes of the rare earths, of general formula [(C3R1 5)rM1(X)2-r(D)n]+[M2(X)p(C6H5-qR2q)4-P]~ (I), to the preparation of this new catalyst, and to its use for the polymerisation of unsaturated compounds, particularly of conjugated dienes, in solution and in the gas phase.

La présente invention concerne un nouveau catalyseur à base de complexes allyliques de terres rares, de formule générale [(C3R1 5)rM1(X)2-r(D)n]+[M2(X)p(C6H5-qR2q)4-P]~ (I), la préparation de ce nouveau catalyseur, et son utilisation pour la polymérisation de composés insaturés, notamment de diènes conjuguées, en solution et dans la phase gazeuse.

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