Synthesis of perfluoroalkyl iodides
US5268516A · kind A · utility
10Cited by
8References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 13, 1993 |
| Grant date | Dec 7, 1993 |
| Priority date | — |
| Expiry date | Jan 13, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C17/278
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention relates to a continuous process for the preparation of perfluoroalkyl iodides containing from 4 to 12 carbon atoms by thermal telomerization of tetrafluoroethylene by pentafluoroethyl iodide or heptafluoroisopropyl iodide in a tubular reactor. According to the invention, 30 to 75% of the tetrafluoroethylene is supplied at the head of the reactor; the remainder is introduced at a point in the reactor located between the 2/5 and 3/4 of the length of the tube. The proportion of undesirable heavy telomers is reduced in this way.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.