Durable pigmentary titanium dioxide and methods of producing the same
US5730796A · kind A · utility
9Cited by
36References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 16, 1997 |
| Grant date | Mar 24, 1998 |
| Priority date | — |
| Expiry date | Jan 16, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2006/90
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Pigmentary titanium dioxide having a high durability when used in paint or the like exposed to solar radiation and methods of producing such pigmentary titanium dioxide are provided. The durable pigmentary titanium dioxide of the invention is comprised of rutile titanium dioxide particles having cerium oxide and dense amorphous silica deposited thereon. The particles preferably also have an outer coating of hydrous alumina deposited thereon.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.