Method for continuous production of a perfluoroalkyl iodide telomer
US6919490B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 17, 2002 |
| Grant date | Jul 19, 2005 |
| Priority date | — |
| Expiry date | Apr 17, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J35/612
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention relates to a process for continuously producing a perfluoroalkyl iodide represented by the general formula Rf(CF2CF2)nI, wherein Rf is a C1-6 perfluoroalkyl and n is an integer from 1 to 4, the method comprising continuously supplying a perfluoroalkyl iodide as a telogen represented by the general formula RfI, wherein Rf is as defined above, and tetrafluoroethylene as a taxogen to a tubular reactor packed with a metal catalyst comprising a powdery spherical metal or a sintered metal; and conducting telomerization at a temperature of 60 to 160° C. under a pressure of 0.1 to 5 MPa (gauge pressure).According to the present invention, medium-chain perfluoroalkyl iodides can be continuously and efficiently produced with little generation of impurities, such as hydrogen-containing organic compounds and the like.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.