Bridged bis-amido group 4 metal compounds in a catalyst...

Details Bridged bis-amido group 4 metal compounds in a catalyst... Bridged bis-amido group 4 metal compounds in a catalyst...

B - Operations, Transporting

01

J

B01J 31/18 (2006.01) B01J 31/12 (2006.01) B01J 31/16 (2006.01) C07C 2/30 (2006.01) C07C 11/02 (2006.01) C07F 7/10 (2006.01) C07F 7/28 (2006.01)

Patent

CA 2214722

Provided is a catalyst composition comprising a bis-amide compound represented by formula (II), wherein M is zirconium, hafnium or titanium; each N is a three coordinate nitrogen atom; each Y is Si, Ge or Sn; each X is, independently, a hydride or R; each R is, independently, a hydrocarbyl one or more carbon atoms of which may be substituted by an element selected from Si, O, P, N and S; Q is a neutral Lewis base and m is a number from 0 to 2; or a dimer thereof and a second component. Preferably, the second component is a compound which is capable of providing a bulky and labile anion [A]-, which anion is substantially non-coordinating under the reaction conditions and contains at least one boron atom. Also provided is a process for oligomerising or co-oligomerising alpha olefins in the presence of this catalyst composition.

L'invention concerne une composition de catalyseur comprenant un composé bis-amide représenté par la formule (II), ou un dimère de ce composé. Dans cette formule, M est le zirconium, l'hafnium ou le titane; chaque N est un atome d'azote à trois liaisons de valence, chaque Y est Si, Ge ou Sn; chaque X est d'une manière indépendante un hydrure ou R; chaque R est d'une manière indépendante un hydrocarbyle, dont un ou plusieurs atomes de carbone peuvent être substitués par un élément choisi parmi Si, O, P, N et S; Q est une base de Lewis neutre et m est un nombre compris entre 0 et 2. Cette composition contient également un second composant. De préférence, ce second composant peut fournir un anion volumineux et labile [A]?-¿, qui est sensiblement incapable de former une liaison de coordination dans les conditions de réaction et qui contient au moins un atome de bore. L'invention concerne également un procédé d'oligomérisation ou de co-oligomérisation des alpha-oléfines en présence de cette composition de catalyseur.

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