Platelet-like pigments coating with an optional first layer of barium or calcium sulfate and a layer of titanium and zirconium dioxide, which prevent transmission of ultraviolet and infrared rays
US5271770A · kind A · utility
3Cited by
8References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 29, 1992 |
| Grant date | Dec 21, 1993 |
| Priority date | — |
| Expiry date | Sep 29, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09C2210/20
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A pigment comprising leaf-like substrates particles having a particle size of 0.5 to 100 .mu.m, whereby the surface of said particles is covered with a metal oxide comprising titanium oxide and zirconium oxide in a molar ratio of 10:1 to 10:15 within a range of from 20 wt. % to 60 wt. % based on the total weight of the pigment possesses good adhesion and spreadability and has an effect of preventing ultraviolet rays and infrared rays.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.