Glass flake and method of manufacrturing the same
US7641730B2 · kind B2 · utility
3Cited by
7References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 27, 2004 |
| Grant date | Jan 5, 2010 |
| Priority date | — |
| Expiry date | Mar 19, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2996
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The present invention provides a glass flake having sufficiently high visible-light absorptivity. The glass flake of the present invention includes a glass composition that contains a transition metal oxide such as an iron oxide and that allows the glass flake to have a visible-light transmittance of 85% or lower measured with an A light source when the glass flake has a thickness of 15 μm. In this glass composition, it is preferable that the content of Fe2O3 (T−Fe2O3) in terms of the total iron satisfies the following formula, expressed in mass %: 10<T−Fe2O3≦50.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.