Removal of (hydro)haloalkene impurities from product streams
US7084315B2 · kind B2 · utility
14Cited by
5References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 2, 2001 |
| Grant date | Aug 1, 2006 |
| Priority date | — |
| Expiry date | Mar 30, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C17/389
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for removing a (hydro)haloalkene impurity from a product stream containing that impurity and a desired compound is described. The process comprises contacting the product stream with a solid adsorbent comprising pores having openings which have a size across their largest dimension in the range of from about 7 Å to about 10 Å. The process is particularly suited to the removal of (hydro)halopropene impurities from saturated hydrofluorocarbons such as a tetrafluoroethane, a pentafluoropropane, a hexafluoropropane or a heptafluoropropane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.