Poly-β-carboxyacrylamide polymer, use thereof and process for preparing the same
US7341666B2 · kind B2 · utility
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15Claims
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Key dates
| Filing date | Mar 27, 2002 |
| Grant date | Mar 11, 2008 |
| Priority date | — |
| Expiry date | Jan 3, 2023 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F22/38
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A poly-β-carboxyacrylamide polymer of formula (I) wherein X is an alkaline metal or a substituent capable of bringing about an exchange reaction with a salt of an alkaline earth metal, said polymer having a ponderal average molecular weight greater than or equal to 2,000. The use of said polymer and process for preparing the same
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.