Metallocene catalyst containing bulky organic group
US5502017A · kind A · utility
41Cited by
3References
9Claims
0Family size
Assignee
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Key dates
| Filing date | Mar 10, 1994 |
| Grant date | Mar 26, 1996 |
| Priority date | — |
| Expiry date | Mar 10, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F4/6592
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An ionic metallocene catalyst for olefin polymerization which comprises: (1) a cyclopentadienyl-type ligand, a Group IVB transition metal, and alkyl, aryl, or hydride substituents, as a cation, and (2) a weakly coordinating anion comprising boron substituted with halogenated, such as tetra fluoro, aryl substituents preferably containing silylalkyl substitution, such as para-silyl t-butyldimethyl.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.