Titanium dioxide particles, method for their preparation and their use in cosmetics, varnish and surface coating
US6187438A · kind A · utility
16Cited by
22References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 23, 1999 |
| Grant date | Feb 13, 2001 |
| Priority date | — |
| Expiry date | Jun 23, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2995
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The invention concerns titanium dioxide particles coated at least partially: with a first layer of at least a cerium and/or iron compound, and a second layer of at least a metal oxide, hydroxide or oxohydroxide, the said particles having a BET specific surface area of at least 70 m.sup.2 /g and a density of 2.5. The invention also concerns a method for preparing these particles and their use as anti-UV agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.