Easy to disperse, high durability TiO2 pigment and method of making same
US8105432B2 · kind B2 · utility
4Cited by
28References
6Claims
0Family size
Assignee
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Key dates
| Filing date | Sep 28, 2007 |
| Grant date | Jan 31, 2012 |
| Priority date | — |
| Expiry date | Jul 25, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2993
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to a TiO2 pigment coated sequentially in a wet treatment process with hydrous silica and hydrous alumina both in the presence of citric acid wherein the resulting pigment is coated with from 1 to 4% amorphous alumina based on the weight of the untreated TiO2; from 3 to 6% silica glass based on the weight of the untreated TiO2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.