Supported group 8-10 transition metal olefin polymerization catalysts
US6660677B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 26, 2000 |
| Grant date | Dec 9, 2003 |
| Priority date | — |
| Expiry date | May 26, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F210/16
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A catalyst for the polymerization of olefins is disclosed. The catalyst comprises a complex comprising (a) a ligand of the formula X, (b) a group 8-10 transition metal, and optionally (c) a Bronsted or Lewis acid, wherein R1 and R6 are each, independently, hydrocarbyl, substituted hydrocarbyl, or silyl;N represents nitrogen; andA and B1 are each, independently, a heteroatom connected mono-radical wherein the connected heteroatom is selected from Group 15 or 16 of the Periodic Table; in addition, A and B1 may be linked to each other by a bridging group. The complex is attached to a solid support. The solid support, the Bronsted or Lewis acid, and the complex may be combined in any order to form the catalyst. A process for making the catalyst is also described. Olefin polymerization and copolymerization processes are also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.