Cyclic oligomeric oxo- and imido- metal complexes as olefin...

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B01J 31/00 (2006.01) B01J 31/16 (2006.01) B01J 31/18 (2006.01) B01J 31/22 (2006.01) B01J 37/00 (2006.01) C08F 4/02 (2006.01) C08F 4/06 (2006.01) C08F 4/60 (2006.01) C08F 4/72 (2006.01) C08F 10/02 (2006.01) C08F 4/659 (2006.01)

Patent

CA 2336365

Single site nitrogen and oxygen and metallacyclic catalysts comprising at least two polymerization-stable anionic ancillary ligands and a Group 3-10 metal are disclosed wherein the nitrogen or oxygen heterocyclic catalyst is produced by dimerizing an alkylamido or trimerizing a metal containing oxane. The polymerization-stable anionic ancillary ligands are preferably either cyclopentadienyl, borataaryl, pyrrolyl, azaboralinyl, pyridinyl, or a quinolinyl ring. In a preferred embodiment, the invention relates to catalysts of the formula (I) or (II) wherein M is a transition metal of Groups 3-10; L is a polymerization-stable anionic ancillary ligand; R is a hydrocarbyl group containing up to about 12 carbon atoms optionally substituted with halogen; and E is R or halogen, alkoxy from C1 to C20, siloxy from C1 to C20, N(R)2, hydrogen or another univalent anionic ligand, or mixtures thereof.

L'invention concerne des catalyseurs métallacycliques d'azote et d'oxygène à site unique comprenant au moins deux ligands auxiliaires anioniques stables à la polymérisation et un métal des groupes 3 à 10, le catalyseur hétérocyclique d'azote ou d'oxygène étant obtenu par dimérisation d'un alkylamido ou trimérisation d'un oxane contenant un métal. Les ligands auxiliaires anioniques stables à la polymérisation sont de préférence un noyau de cyclopentadiényle, de borataaryle, de pyrrolyle, d'azaboralinyle, de pyridinyle ou de quinolinyle. Dans un mode de réalisation préféré, l'invention concerne des catalyseurs de formules (I) ou (II) dans lesquelles: M représente un métal de transition des groupes 3 à 10; L représente un ligand auxiliaire anionique stable à la polymérisation; R représente un groupe hydrocarbyle contenant jusqu'à 12 atomes de carbone éventuellement substitué par un halogène; et E représente R ou un halogène, un alcoxy en C¿1? à C¿20?, un siloxy en C¿1? à C¿20?, N(R)¿2?, un hydrogène ou un autre ligand anionique univalent, ou leurs mélanges.

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