Adjusting polymer characteristics through process control
US7323523B2 · kind B2 · utility
4Cited by
13References
20Claims
0Family size
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Key dates
| Filing date | Jun 20, 2005 |
| Grant date | Jan 29, 2008 |
| Priority date | — |
| Expiry date | Jan 7, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S526/905
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Properties of a polymer produced in gas phase or slurry phase using a dual catalyst such as polydispersity and comonomer incorporation, may be controlled by controlling reaction parameters such as temperature, (co)monomer pressure, hydrogen partial pressure and the presence of non-polymerizable hydrocarbon. This provides an easy method to control the bimodality of a polymer as well as comonomer incorporation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.