Method for making a photodurable aqueous titanium dioxide pigment slurry
US5824145A · kind A · utility
17Cited by
6References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 14, 1997 |
| Grant date | Oct 20, 1998 |
| Priority date | — |
| Expiry date | May 14, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2991
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
This invention relates to a new method for making a photodurable, aqueous titanium dioxide (TiO.sub.2) pigment slurry. The method involves mixing amorphous alumina, TiO.sub.2 pigment particles, water, and at least one dispersant to form the slurry. The initial slurry comprises at least about 78 wt. % TiO.sub.2 solids and at least about 3 wt. % alumina. The resulting slurry may be diluted to a lower TiO.sub.2 solids content and subsequently screened and media-milled. The titanium dioxide pigment slurry is suitable for use in coatings formulations such as paints.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.