Fluorinated onium salts
US6765112B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 25, 2003 |
| Grant date | Jul 20, 2004 |
| Priority date | — |
| Expiry date | Mar 25, 2023 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F9/5407
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process that can be used for manufacturing a tetraalkylonium perfluoroalkylsulfonate is provided. The process comprises contacting a tetraalkylonium halide with a metal perfluoroalkyl sulfonate to produce a mixture; allowing the second mixture to produce an aqueous upper layer and a separate lower liquid layer; separating the lower liquid layer from the upper aqueous layers to produce a product layer; optionally washing the product layer with 1 to 10 volumes of water, based on the volume of the product layer at a temperature of about 50° C. to about 100° C. to produce a washed product layer; and drying the product layer or washed product.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.