Sulfonated phenolic material and its use in post primary oil recovery
US4469604A · kind A · utility
6Cited by
30References
42Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 25, 1982 |
| Grant date | Sep 4, 1984 |
| Priority date | — |
| Expiry date | May 25, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S507/936
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Sulfonated phenolic compounds as well as sulfomethylated phenolic compounds, surfactant systems containing such compound and the use of such surfactant systems in post primary oil recovery are disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.