Catalyst components, process for their preparation and their use as catalyst components in polymerization of olefins
US7034157B2 · kind B2 · utility
4Cited by
11References
20Claims
0Family size
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Key dates
| Filing date | Oct 23, 2003 |
| Grant date | Apr 25, 2006 |
| Priority date | — |
| Expiry date | Dec 21, 2023 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F110/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Olefin polymerization catalyst precursors are described herein. The precursors are generally characterized by the formula: wherein M is a transition metal selected from groups 8 to 10 of the Periodic Table; n is an integer of from 1 to 3; Q is a halogen or a C1 to C2 alkyl group; PY is a pyridinyl group, which is coordinated with M through the nitrogen atom of said pyridinyl group; R′ is a C1 to C20 hydrocarbyl group; R″ is a C1 to C20 hydrocarbyl group; A1 is a monoaromatic group, which is substituted or unsubstituted; and A2 includes multiple aromatic groups, which are substituted or unsubstituted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.