Nickel-based catalysts for preparing high cis 1,4-polydienes
US7820580B2 · kind B2 · utility
2Cited by
6References
14Claims
0Family size
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Key dates
| Filing date | Nov 13, 2008 |
| Grant date | Oct 26, 2010 |
| Priority date | — |
| Expiry date | Nov 13, 2028 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2531/90
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A nickel-carbene polymerization catalyst system for preparing high cis polydienes is provided. The catalyst system comprises (a) a nickel N-heterocyclic carbene complex, (b) an organoaluminum compound, (c) a fluorine-containing compound, and (d) optionally, an alcohol. Also provided is a process for producing a polydiene comprising reacting a conjugated diene in the presence of a polymerization catalyst comprising (a) a nickel N-heterocyclic carbene complex, (b) an organoaluminum compound, (c) a fluorine-containing compound, and (d) optionally, an alcohol.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.