Pearlescent glass pigment
US6045914A · kind A · utility
28Cited by
10References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 2, 1997 |
| Grant date | Apr 4, 2000 |
| Priority date | — |
| Expiry date | Jun 2, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2996
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A pearlescent pigment comprises C glass flakes having a first layer comprising rutile titanium dioxide or iron oxide thereon and a second layer comprising hydrous oxide or hydroxide of a polyvalent cation, precipitate of said polyvalent cation, and an anionic polymeric compound. A hydrous layer of the rutile forming titanium dioxide or iron oxide is first formed on the glass flakes and the resulting coated flakes are calcined prior to the application of the second layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.