Process for producing fluorinated fluorosulfonylalkyl vinyl ether
US7005545B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 23, 2003 |
| Grant date | Feb 28, 2006 |
| Priority date | — |
| Expiry date | May 23, 2023 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C303/22
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention provides a process for producing a fluorinated fluorosulfonylalkyl vinyl ether represented by general formula (2):CF2═CFO(CF2CF(CF3)O)nCF2CF2SO2F (2)wherein n is an integer from 0 to 10, comprising fluorinating a perfluorovinylether sulfonate with SF4 and HF, the perfluorovinylether sulfonate being represented by general formula (1):CF2═CFO(CF2CF(CF3)O)nCF2CF2SO3M (1)wherein M is Ma or Mb1/2, provided that Ma is an alkali metal and Mb is an alkaline earth metal; and n is as defined above. According to the process of the invention, the fluorinated fluorosulfonylalkyl vinyl ether can be produced in high yield in an industrially advantageous manner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.