Novel viscosifiers for aqueous fluids based on polymer complexes
US4517333A · kind A · utility
8Cited by
16References
9Claims
0Family size
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Key dates
| Filing date | Dec 12, 1983 |
| Grant date | May 14, 1985 |
| Priority date | — |
| Expiry date | Dec 12, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S525/919
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to viscosification agents for aqueous solutions in which the viscosification agents are mixtures of water soluble polymer backbone containing an anionic comonomer and a copolymer of a water soluble polymer backbone containing a cationic comonomer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.