Process for passivation of a reactor after shutdown of alpha olefin polymerization processes
US5548040A · kind A · utility
4Cited by
10References
10Claims
0Family size
Assignee
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Key dates
| Filing date | Dec 20, 1994 |
| Grant date | Aug 20, 1996 |
| Priority date | — |
| Expiry date | Dec 20, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F210/16
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A method for passivating internal surfaces of a reactor system during start-up and shutdown of an alpha olefin polymerization or copolymerization reaction by adding a passivation agent such as a dialkyl zinc compound, an alcohol, or an epoxide, to the reactor prior to exposing the internal reactor surfaces to air or moisture before reaction initiation and/or after reaction ceases.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.