Catalyst and process for a ziegler polymerisation
AssigneeDsm N.V.
InventorsJacob Renkema, Jeroen H. G. Konings
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Abstract
The present invention relates to a catalyst. The catalyst contains a transition metal-imidoaryl complex which contains at least one amido group bound to the transition metal and wherein the aryl group is a 2,6-di-substituted phenyl group. The catalyst can be used in polymerizing olefins. The transition metal is chosen from groups 3-6 of the periodic table.
Claims37
A catalyst suitable for the preparation of an olefin polymer, comprising an organometallic compound and a transition metal-imidoaryl complex wherein the transition metal-imidoaryl complex contains at least one amido group bound to the transition metal, the aryl group in the transition metal-imidoaryl complex is a 2,6-di-C.sub.1 -C.sub.20 -alkylsubstituted phenyl group, and the transition metal is a metal from groups 3-6 of the Periodic Table.
A catalyst comprising a transition metal-imidoaryl complex represented by the formula
- R-N=M(X).sub.n (Y).sub.m (NR.sub.1 R.sub.2).sub.p
- wherein
- R represents a 2,6-dialkylsubstituted phenyl group,
- M represents a transition metal from groups 3-6 of the Periodic Table,
- X represents a halogen atom,
- Y represents an alkoxy group, an amido group, or a silicon containing hydrocarbyl group,
- R.sub.1 and R.sub.2 contain up to 20 carbon atoms and, independent of one another, represent an alkyl group, an alkenyl group, an aryl group, or a silicon-containing hydrocarbyl group,
- n is an integer and is 0 to 2,
- m is an integer and is 0 to 2,
- p is an integer and is 1 to 3, and
- R-N=represents an imidoaryl ligand.
Dependencies are inferred from the claim text.