Catalyst activation in a dual reactor process
US8431657B2 · kind B2 · utility
9Cited by
46References
20Claims
0Family size
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Key dates
| Filing date | Nov 23, 2011 |
| Grant date | Apr 30, 2013 |
| Priority date | — |
| Expiry date | Nov 23, 2031 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F210/16
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Catalysts are activated in a dual reactor solution process by adding substoichiometric and superstoichiometric amounts of an ionic activator to an organometallic polymerization catalyst in a first and second reactor respectively. The new activation method allows one to alter process conditions in a favorably way with minimum impact to process economics. The new activation method also provides polymers which give films having improved optical properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.