Stabilizer and fluidifier additives for dispersions of coal in water
US5042990A · kind A · utility
5Cited by
16References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 27, 1989 |
| Grant date | Aug 27, 1991 |
| Priority date | — |
| Expiry date | Nov 27, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F8/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Storage-stable, pumpable, concentrated dispersions of coal in water contain a non-ionic additive constituted by a polymer containing polyethoxy chains grafted onto suitably functionalized polystyrenes having a molecular weight comprised within the range of from 500 to 15000.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.