Titanium, cerium and alkaline or earth-alkaline based compound, preparation methods and use as colouring pigment
US6294011A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 23, 2000 |
| Grant date | Sep 25, 2001 |
| Priority date | — |
| Expiry date | Feb 23, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2006/60
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The present invention is concerned with a titanium-, -and alkaline- or alkaline-earth-based compound, processes for the preparation thereof, and use thereof as a coloring pigment. The product of the invention is characterized in that it corresponds to formula (1) M.sub.x Ce.sub.y Ti.sub.z O.sub.t wherein M represents an alkaline or an alkaline-earth, and x, y and z satisfy the following equations: 0.1.ltoreq.y/z.ltoreq.1.5, 1.ltoreq.(x+z)/y.ltoreq.15, x+y+z=1, (x+3y=4z)/2.ltoreq.t.ltoreq.(x+4y+4z)/2. The product can be prepared by forming a mixture which comprises a titanium salt, sol or suspension, a compound of element M, and a cerium compound and then by drying and calcining the mixture, thus formed, according to a second variant, the compound is prepared by bringing together a cerium compound and a titanium compound in a liquid medium; by adding a base to the mixture thus obtained, whereby a precipitate is obtained; by bringing together a compound of element M and the precipitate thus obtained; by drying and then calcining the mixture obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.