Crosslinkable cellulose derivatives
US5122549A · kind A · utility
58Cited by
1References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 8, 1991 |
| Grant date | Jun 16, 1992 |
| Priority date | — |
| Expiry date | Aug 8, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K8/5756
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Novel treating fluid compositions containing crosslinkable non-ionic cellulose derivatives and methods of use in petroleum recovery operations are disclosed. The treating fluid polymers are prepared by reacting vinyl monomers having a crosslinkable substituent with a cellulose derivative using a redox system comprising the reaction product of hydrogen peroxide with ferrous salt. The polymers readily crosslink with polyvalent metal ions, such as zirconium and titanium, to form temperature-stable gels useful in petroleum recovery operations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.