Stable suspensions of water-soluble polymers and their manufacture
US4454260A · kind A · utility
7Cited by
19References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 18, 1983 |
| Grant date | Jun 12, 1984 |
| Priority date | — |
| Expiry date | Jan 18, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S524/923
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Stable suspension of a water-soluble polymer comprising solid particles of this water-soluble polymer in a liquid hydrocarbon medium which also comprises a thickening agent selected from the alkali or alkaline-earth metal salts of fatty acids having 6-33 carbon atoms. The resultant suspensions are stable and dissolve easily when dispersed in water; they can be used in enhanced oil recovery. They may also contain minor proportions of water and/or of C.sub.1 -C.sub.12 monoalcohols or C.sub.2 -C.sub.12 diols.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.