Process for separating hydrogen fluoride from fluorocarbons
US5918481A · kind A · utility
26Cited by
7References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 20, 1997 |
| Grant date | Jul 6, 1999 |
| Priority date | — |
| Expiry date | Nov 20, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C17/38
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention provides a method for separating fluorocarbons from mixtures of fluorocarbon and hydrogen fluoride. In particular, the invention provides a method for separating fluorocarbons, such as pentafluoropropane, from azeotropic mixtures of the fluorocarbon and hydrogen fluoride using compositional variations with pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.