Self limiting catalyst composition for ethylene polymerization
US8993692B2 · kind B2 · utility
13Cited by
3References
9Claims
0Family size
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Key dates
| Filing date | Jun 29, 2011 |
| Grant date | Mar 31, 2015 |
| Priority date | — |
| Expiry date | Nov 14, 2031 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F210/16
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process for polymerizing ethylene to produce an ethylene-based polymer including contacting ethylene with a Ziegler-Natta procatalyst, an alkylaluminum cocatalyst and a self limiting agent selected from the group of aliphatic, cycloaliphatic, substituted cycloaliphatic or aromatic esters, anhydrides and amides such that the self limiting agent reduces polymerization rates to no greater than 40% of the polymerization rate in the absence of the self limiting agent at temperatures equal to or greater than 120° C. is provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.