Method of treating 1,1,1,3,3-pentafluoropropane
US6414203B1 · kind B1 · utility
1Cited by
3References
7Claims
0Family size
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Key dates
| Filing date | May 9, 2001 |
| Grant date | Jul 2, 2002 |
| Priority date | — |
| Expiry date | May 9, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J21/18
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A method for reducing the content of unsaturated impurities contained in 1,1,1,3,3-pentafluoropropane (R245fa), while maintaining the loss of R245fa at a minimum level. R245fa containing unsaturated impurities is contacted in a gas phase with chlorine gas in the presence of an activated carbon catalyst, thereby converting the unsaturated impurities to the chlorine addition compounds to reduce the content of the unsaturated impurities.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.