Bimetallocyclic transition metal catalyst systems

Details Bimetallocyclic transition metal catalyst systems Bimetallocyclic transition metal catalyst systems

C - Chemistry, Metallurgy

08

F

C08F 4/622 (2006.01) C08F 10/00 (2006.01) C08F 38/00 (2006.01) C08F 4/619 (2006.01)

Patent

CA 2220655

This invention relates to catalyst systems comprising activated bimetallocyclic transition metal compounds, and the use of these catalyst systems for the polymerization of ethylenically and acetylenically unsaturated monomers. The bimetallocyclic compounds comprise two metal atoms, selected from the group consisting of Group 4 or Group 5 metal atoms, connected through two covalent bridging links so as to form a cyclic compound having delocalized bonding.

L'invention se rapporte à des systèmes de catalyseur comprenant des composés activés de métal de transition bimétallocyclique, ainsi qu'à l'utilisation de ces systèmes afin de polymériser des monomères présentant une insaturation éthylénique et acétylénique. Ces composés bimétallocycliques comprennent deux atomes métalliques, choisis dans le groupe constitué par des atomes métalliques du groupe 4 ou du groupe 5, reliés au moyen de deux liaisons covalentes de type pontage, de manière à former un composé cyclique présentant une liaison délocalisée.

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