High molecular weight associative amphoteric polymers and uses thereof
US7700702B2 · kind B2 · utility
28Cited by
9References
20Claims
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Key dates
| Filing date | Mar 29, 2005 |
| Grant date | Apr 20, 2010 |
| Priority date | — |
| Expiry date | Mar 29, 2025 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F220/06
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
High molecular weight associative amphoteric polymers for increasing the viscosity of aqueous solutions, comprise: at lease one cationic monomer derived from acrylamide bearing at least one hydrophobic chain of 8 to 30 carbon atoms; 1 to 99.9 mole % of at least one anionic monomer; and 1 to 99 mole % of one or several non-ionic water-soluble monomers. Aqueous solutions containing said polymers find uses in industry, in particular the oil, paper, water treatment, mining, cosmetics, textile, detergency industries and generally in all industrial techniques using thickened solutions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.