Polyfluorinated sulphonic acids and their derivatives
US4610829A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 4, 1978 |
| Grant date | Sep 9, 1986 |
| Priority date | — |
| Expiry date | Dec 4, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S516/03
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
New products and compositions of matter complying with the general formula: EQU [C.sub.n F.sub.2n+1 --CH.sub.2 --.sub.b SO.sub.2 --Z].sub.d M wherein: C.sub.n F.sub.2n+1 represents a straight or ramified branched perfluorinated chain: n represents a whole number between 1 and 20, b is a whole number between 2 and 20, preferably equal to 2 or 4, Z represents a chlorine, bromine or an oxygen atom (when Z is a chlorine or a bromine atom, M is nothing and d is equal to 1), when Z is an oxygen atom: M is a hydrogen atom in which case, d is equal to 1, M is a metal of the Groups I.sub.A, II.sub.A, I.sub.B, II.sub.B, VIII of the periodic table, the ammonium radical, the aluminum or the lead radical, and in which case d represents the valence of this metal and methods for preparing new products as illustrated by the following representative reactions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.