Friction reduction using a viscoelastic surfactant
US4615825A · kind A · utility
60Cited by
2References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 30, 1981 |
| Grant date | Oct 7, 1986 |
| Priority date | — |
| Expiry date | Oct 30, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/0391
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The friction exhibited by a flowing aqueous liquid containing a viscoelastic surfactant can be further reduced by adding to the aqueous liquid an organic electrolyte capable of associating with the surfactant ion of the viscoelastic surfactant. For example, the friction exhibited by an aqueous liquid containing cetyl trimethylammonium salicylate can be further reduced by the addition of sodium salicylate to the liquid. The resulting aqueous liquid systems exhibiting the reduced friction are shear stable and useful in a wide variety of applications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.