C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
C08F 4/52 (2006.01) C08F 10/00 (2006.01) C08F 297/06 (2006.01) C08F 297/08 (2006.01) C08F 110/14 (2006.01) C08F 210/06 (2006.01) C08F 210/14 (2006.01)
Patent
CA 2367154
The invention concerns a method for preparing block copolymers comprising steps which consist in: polymerising a first monomer using an organolanthanide catalyst wherein said catalyst in the form of a hydride complex of a trivalent metal from the group of rare earths; then in polymerising at least a second monomer. The invention also concerns block copolymers whereof the blocks are polyolefins.
L'invention a pour objet un procédé de préparation de copolymères blocs comprenant les étapes de polymérisation d'un premier monomère à l'aide d'un catalyseur organolanthanide dans lequel ledit catalyseur est sous la forme d'un complexe hydrure d'un métal trivalent du groupe des terres rares, puis polymérisation d'au moins un second monomère. L'invention a encore pour objet des copolymères blocs dont les blocs sont des polyoléfines.
Desurmont Guillaume
Malinge Jean
Yasuda Hajime
Atofina
Gowling Lafleur Henderson Llp
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