Homogeneous mixtures of solid organic acids and solid cationic ester-based polymer flocculants
US5008319A · kind A · utility
6Cited by
1References
8Claims
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Key dates
| Filing date | Feb 1, 1990 |
| Grant date | Apr 16, 1991 |
| Priority date | — |
| Expiry date | Feb 1, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2333/26
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Homogeneous compositions of a solid, water soluble organic acid, e.g., glutaric acid, and a solid cationic ester-based copolymer flocculant are resistant to mechanical segregation and stratification caused by agitation. The compositions are prepared by coating the polymeric flocculant with the organic acid. The compositions are useful in sludge dewatering, water treatment, paper processing and waste water treatment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.