Transition metal complexes comprising .beta.-diiminate...

C - Chemistry – Metallurgy – 07 – F

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C07F 7/28 (2006.01) C07F 7/00 (2006.01) C07F 9/00 (2006.01) C07F 11/00 (2006.01) C08F 4/64 (2006.01) C08F 4/68 (2006.01) C08F 4/69 (2006.01) C08F 10/00 (2006.01) C08F 110/02 (2006.01) C08F 110/14 (2006.01) C08F 210/16 (2006.01)

Patent

CA 2387651

The present invention relates to catalyst systems, processes for making such catalysts, intermediates for such catalysts, and olefin polymerization processes using such catalysts wherein such catalyst includes a component represented by formula (IA) wherein R and R' independently represent a hydrogen atom, or a substituted or unsubstituted, branched or unbranched hydrocarbyl or organosilyl radical; R1, R2, and R3 independently represent a hydrogen atom, or a substituted or unsubstituted, branched or unbranched hydrocarbyl radical; M is a group IIIB, IVB, VB, VIB, VIIB or VIII transition metal; T independently represents a univalent anionic ligand such as a hydrogen atom, or a substituted or unsubstituded hydrocarbyl, halogeno, aryloxido, arylorganosilyl, alkylorganosilyl, amido, arylamido, phosphido, or arylphosphido group, or two T groups taken together represent an alkylidene or a cyclometallated hydrocarbyl bidendate ligand; L independently represents a sigma donor stabilizing ligand; X, which is optional, represents a relatively weakly coordinated anion; and a = 0 to 4 inclusive, b = 0 to 4 inclusive, provided a+b <= 4.

L'invention concerne des systèmes catalyseurs, leurs procédés de fabrication, des intermédiaires pour lesdits catalyseurs et des procédés de polymérisation d'oléfines dans lesquels lesdits catalyseurs sont utilisés. Lesdits catalyseurs comprennent un composant représenté par la formule 1A dans laquelle R et R' représentent indépendamment un atome d'hydrogène, ou un radical hydrocarbyle ou organosilyle ramifié ou non, substitué ou non; R?1¿, R?2¿, et R?3¿ représentent séparément un atome d'hydrogène ou un radical hydrocarbyle ramifié ou non, substitué ou non; M représente un métal de transition de groupe IIIB, IVB, VB, VIB, VIIB ou VIII; T représente indépendamment un ligand anionique monovalent, tel qu'un atome d'hydrogène, un groupe arylphosphido ou hydrocarbyle, halogéno, aryloxydo, arylorganosilyle, alkylorganosilyle, amido, arylamido, phosphido, substitué ou non, ou deux groupes T pris ensemble représentent un alkylidène ou un ligand bidenté d'hydrocarbyle à cyclométal; L représente indépendamment un ligand de stabilisateur donneur de sigma; X, qui est optionnel, représente un anion faiblement coordonné; et a = 0 à 4 inclus, b = 0 à 4 inclus, à condition que a+b <= 4.

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