Process for reversible thickening of a liquid
US4735731A · kind A · utility
111Cited by
10References
38Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 14, 1986 |
| Grant date | Apr 5, 1988 |
| Priority date | — |
| Expiry date | Apr 14, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/0391
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Industrial liquids containing viscoelastic surfactant compositions can be reversibly thickened and broken. For example, a thickened industrial liquid can exhibit good solids carrying capacity, and after the viscosity of the liquid is broken, using techniques such as change in pH, addition of a hydrocarbon, change in temperature, etc., the solids can be easily removed therefrom. Viscosity can be again provided to the industrial liquid without the necessity of adding substantial amounts of additional thickener.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.