Method for inhibiting the degradation of an aqueous solution of an acrylamide polymer in a petroleum recovery process
US4481316A · kind A · utility
7Cited by
9References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 22, 1982 |
| Grant date | Nov 6, 1984 |
| Priority date | — |
| Expiry date | Dec 22, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/37
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
2-Mercaptobenzoimidazole or its water-soluble salt is added to a water-soluble acrylamide polymer containing a predominant amount of acrylamide in the molecule to inhibit degradation, especially at high temperatures, in a petroleum recovery process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.