Aqueous gelable compositions having extended gelation time and methods of preparing same
US4110230A · kind A · utility
35Cited by
4References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 6, 1975 |
| Grant date | Aug 29, 1978 |
| Priority date | — |
| Expiry date | Oct 6, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S507/935
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Aqueous gelable compositions comprising water, a polymer, a polyvalent metal compound wherein the metal can be reduced to a lower polyvalent valence state, a reducing agent, and a complexing agent for complexing with newly reduced ions of said metal and increasing the gelation time of said compositions; and methods of preparing said compositions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.