Lowering of anionic loading of dispersants on pigment slurries by blending with nonionic polymers
US5169894A · kind A · utility
10Cited by
1References
11Claims
0Family size
Inventors
Key dates
| Filing date | Nov 16, 1990 |
| Grant date | Dec 8, 1992 |
| Priority date | — |
| Expiry date | Nov 16, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D17/004
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Hydroxy terminated polyoxyethylene homopolymers or hydroxy terminated polyoxyethylene/polyoxypropylene block copolymers mixed with polycarboxylates have been found to be effective dispersants for aqueous, high solids, pigment slurries. The blend provides a simple, efficient means of matching the requirements of a particular slurry, while lowering the anionic loading on a pigment particle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.