Perfluoroalkane sulfonamido-alkane phosphonic and phosphonic acid derivatives
US3970586A · kind A · utility
24Cited by
3References
7Claims
0Family size
Assignee
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Key dates
| Filing date | May 7, 1975 |
| Grant date | Jul 20, 1976 |
| Priority date | — |
| Expiry date | May 7, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F9/58
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
An .omega.-perfluoroalkane sulfonamido-alkane phosphonic or phosphinic acid or salt of the formula ##EQU1## in which R.sub.F is a perfluoroalkyl radical with from 1 to 12 carbon atoms; PA1 x and n each independently is 0 or 1, PA1 Y is hydrogen or a lower aliphatic radical with up to 5 carbon atoms, PA1 Z is an aliphatic radical with up to 5 carbon atoms, a cycloaliphatic, araliphatic or aromatic radical, and PA1 R is hydrogen, an alkali metal, alkaline earth metal or ammonium radical. The compounds are useful as surfactants in depressing the surface tension of water.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.