Catalyst with a base consisting of compounds of the rare earth metals for polymerizing unsaturated organic compounds
US6383971B1 · kind B1 · utility
7Cited by
9References
8Claims
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Key dates
| Filing date | Apr 18, 2000 |
| Grant date | May 7, 2002 |
| Priority date | — |
| Expiry date | Apr 18, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F36/04
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention relates to new catalysts based on compounds of the rare earth metals containing a compound of the rare earth metals, a cyclopentadiene, and an alumoxane, as well as the use of new catalysts for the polymerisation of unsaturated compounds, particularly conjugated dienes. With the new catalyst system it is possible in the polymerisation of conjugated dienes to obtain a substantially higher proportion of laterally bound vinyl groups in the polymers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.