| US 7,547,751 B2 | ||
| Process for the preparation of a polyolefin | ||
| Edwin IJpeij, Sittard (Netherlands); Henricus Arts, Munstergeleen (Netherlands); Gerardus van Doremaele, Sittard (Netherlands); Felix Beijer, Sittard (Netherlands); Francis van der Burgt, Herten (Netherlands); and Martin Zuideveld, Maastricht (Netherlands) | ||
| Assigned to DSM IP Assets B.V., Heerlen (Netherlands) | ||
| Appl. No. 10/567,097 PCT Filed Aug. 03, 2004, PCT No. PCT/EP2004/008710 § 371(c)(1), (2), (4) Date Jul. 03, 2006, PCT Pub. No. WO2005/014674, PCT Pub. Date Feb. 17, 2005. |
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| Claims priority of application No. 03077434 (EP), filed on Aug. 04, 2003; and application No. 04075990 (EP), filed on Apr. 01, 2004. | ||
| Prior Publication US 2008/0153999 A1, Jun. 26, 2008 | ||
| Int. Cl. C08F 4/642 (2006.01); C08F 4/649 (2006.01); C08F 4/6592 (2006.01) | ||
| U.S. Cl. 526—141 [526/156; 526/160; 526/165; 526/943; 502/123; 502/152; 502/155] | 7 Claims |
| 1. A process comprising polymerizing at least one aliphatic C2-20 hydrocarbyl mono- or multiolefin in the presence of a catalyst and an aluminum-comprising co-catalyst, wherein the catalyst is a composition comprising a metal-organic reagent, a spectator ligand and optionally at least one equivalent of a hydrocarbylating agent, and wherein the metal organic reagent is represented by MLjXp, where M is Ti, X is a monoanionic ligand bonded to M, L is a neutral ligand bonded to M, j represents an integer denoting the number of neutral ligands L, and p is the valence of the metal M, and wherein the spectator ligand is an imine ligand or an HA adduct thereof, wherein HA represents an acid of which H represents its proton and A represents its conjugate base. |