Terpolymers of ethyl acrylate/methacrylic acid/unsaturated acid ester of alcohols and acids as anti-settling agents in coal water slurries
US4744795A · kind A · utility
4Cited by
8References
58Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 21, 1986 |
| Grant date | May 17, 1988 |
| Priority date | — |
| Expiry date | Aug 21, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10L1/326
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to coal water slurries containing about 0.01% to 1% by weight of a water soluble terpolymer of ethylacrylate/methacrylic acid/ unsaturated carboxylic acid ester of an ethoxylated or nonethoxylated alcohol or an ethoxylated carboxylic acid. The water soluble terpolymer functions as a stablizing agent for the coal water slurry to prevent sedimentation and provide ease of pumping the coal water slurry. The water soluble terpolymer may be used alone or in combination with anionic or nonionic dispersants.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.