Heterogeneous Lewis acid-type catalysts
US5877371A · kind A · utility
6Cited by
3References
11Claims
0Family size
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Key dates
| Filing date | Jun 25, 1998 |
| Grant date | Mar 2, 1999 |
| Priority date | — |
| Expiry date | Jun 25, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F110/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A solid state insoluble salt catalyst system for the carbocationic polymerization of olefin monomer in the presence of a polar or non-polar reaction medium, which comprises (a) solid state catalyst component comprising at least one salt of a strong acid and a carbocationically active transition metal selected from Groups III A, IV A, V A and VI A of the Periodic Table of Elements, wherein said salt is insoluble in the reaction medium; and (b) cocatalyst component effective for promoting the carbocationic polymerization.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.