Copolmer formulations for breaking oil-and-water emulsions
US5921912A · kind A · utility
21Cited by
15References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 31, 1997 |
| Grant date | Jul 13, 1999 |
| Priority date | — |
| Expiry date | Dec 31, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D17/047
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method of breaking oil-in-water and water-in-oil emulsions in crude oil processing systems in which copolymers incorporating a hydrophilic cationic monomer subunit and a lipophilic nonionic monomer subunit or dispersions or emulsions of cationic polymers and obverse demulsifiers are employed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.