Catalyst composition for ethylene polymerization
US7393910B2 · kind B2 · utility
1Cited by
53References
18Claims
0Family size
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Key dates
| Filing date | Aug 18, 2004 |
| Grant date | Jul 1, 2008 |
| Priority date | — |
| Expiry date | Oct 24, 2024 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F110/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process for the polymerization of olefin monomers comprising contacting ethylene or a mixture of ethylene and one or more C4-8 α olefins with a catalyst composition comprising one or more Group 3-10 transition metal containing, Ziegler-Natta, procatalyst compounds; one or more alkylaluminum cocatalyts; and one or more polymerization control agents, said process being characterized in that at least one such polymerization control agent is an alkyl or aryl, ester of an aliphatic or aromatic (poly)carboxylic acid optionally containing one or more substituents comprising a Group 13, 14, 15, or 16 heteroatom.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.