Process for the production of aqueous dispersions of pigmentary titanium dioxide
US4448609A · kind A · utility
15Cited by
5References
8Claims
0Family size
Assignee
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Key dates
| Filing date | Mar 25, 1982 |
| Grant date | May 15, 1984 |
| Priority date | — |
| Expiry date | Mar 25, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S516/06
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Stable high concentration aqueous slurries of pigmentary metal oxide particles having a hydrous oxide surface-treatment comprising alumina, for example alumina surface-treated pigmentary titanium dioxide, may be formed by the use of a specified combination of anionic and amine dispersants and a milling in the presence of grinding elements, for example in a sand mill, to develop suitable viscosity and gloss characteristics. The slurries may show thixotropic properties and are suitable for incorporation in vinyl silk aqueous emulsion paints.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.