Anionic polyhydroxy polyphenyl compounds as dispersants for aqueous slurries of carbonaceous materials
US4501594A · kind A · utility
3Cited by
5References
12Claims
0Family size
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Key dates
| Filing date | Oct 21, 1983 |
| Grant date | Feb 26, 1985 |
| Priority date | — |
| Expiry date | Oct 21, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S516/03
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Aqueous carbonaceous slurries having reduced viscosity, a stabilized network of carbonaceous material in water and improved pumpability are obtained by having present as a dispersant one or more particular water soluble sulfomethylated hydroxy aromatic products. Examples of dispersants are the water soluble sulfomethylation product of the water soluble residue obtained from resorcinol production by the alkaline fusion method, sulfomethylated phenol and sulfomethylated bisphenol A.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.