Preparation of well dispersed suspensions suitable for spray drying
US6656976B2 · kind B2 · utility
5Cited by
6References
8Claims
0Family size
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Key dates
| Filing date | Apr 26, 2001 |
| Grant date | Dec 2, 2003 |
| Priority date | — |
| Expiry date | Nov 12, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K23/16
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A procedure for making well dispersed suspensions containing mixtures of powders displaying a low viscosity which remain stable over an extended period of time includes suspensions prepared in aqueous and/or ethanolic media using a cationic polyelectrolyte at the inherent pH of the mixture. The method is particularly useful for making robust slurries for subsequent spray drying of free flowing granules to be used in the fabrication of cemented carbide or cermet bodies.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.