Polyacrylamide and polyacrylic acid polymers
US4568731A · kind A · utility
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43Claims
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Key dates
| Filing date | Sep 15, 1983 |
| Grant date | Feb 4, 1986 |
| Priority date | — |
| Expiry date | Sep 15, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/125
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The use of a cyclic compound containing a ##STR1## group, i.e., methone, has been found to allow a poor acrylamide or acrylic acid or 2-acrylamide-2-methylpropane sulfonic acid and its salts monomer to be polymerized to a polymer having improved performance characteristics and/or improved rates of polymerization. Optionally, urea is added with the methone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.