Polymerization process
US7491776B2 · kind B2 · utility
1Cited by
43References
56Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 20, 2005 |
| Grant date | Feb 17, 2009 |
| Priority date | — |
| Expiry date | Jun 20, 2025 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F2410/01
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
This invention is directed to processes of making polymer in the presence of a hydrofluorocarbon or perfluorocarbon and recovering the polymer. The processes provided enable polymerization processes to be practiced with minimal fouling in the reaction system, and provide polymer products that can be manufactured to relatively low densities. The invention is particularly beneficial in the production of ethylene based polymers using chromium catalyst systems.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.