Process for treating an aqueous solution of acrylamide resin in order to enable it to gel slowly even at high temperature
US4975483A · kind A · utility
0Cited by
9References
12Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Oct 22, 1987 |
| Grant date | Dec 4, 1990 |
| Priority date | — |
| Expiry date | Oct 22, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F20/54
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Process for treating an aqueous solution of acrylamide resin, characterized in that an emulsifier which is preferably nonionic or anionic, a solution of initiator comprising an organic peroxide, preferably a diperoxide, and optionally a solution of a retarder preferably consisting of a phenol derivative or an alkali metal inorganic derivative are added slowly and with stirring, preferably in the form of a pre-emulsion, to an aqueous solution of acrylamide resin monomer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.