Composition and method for reducing the surface tension of aqueous fluids
US4028257A · kind A · utility
6Cited by
7References
11Claims
0Family size
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Inventor
Key dates
| Filing date | Aug 23, 1976 |
| Grant date | Jun 7, 1977 |
| Priority date | — |
| Expiry date | Aug 23, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S516/05
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The functioning of a perfluorinated compound corresponding to the formula ##STR1## A.sup.- is Cl.sup.-, I.sup.-, F.sup.- or Br.sup.-, preferably I.sup.-, to lower the surface tension of various aqueous based liquids (e.g. acids, spend acids, brines, water etc. and corresponding gelled liquids, when such fluids are employed in environments where they come in contact with earthen formations is improved by also incorporating into the liquid a second water wetting surfactant, comprising an adduct of trimethyl-1-heptanol plus seven moles of ethylene oxide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.