Cobalt-free, black, dual purpose porcelain enamel glass
US5512521A · kind A · utility
6Cited by
2References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 9, 1995 |
| Grant date | Apr 30, 1996 |
| Priority date | — |
| Expiry date | Mar 9, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03C2207/06
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A borosilicate glass composition suitable for porcelain enamel applications is disclosed. Accordingly, a black, cobalt-free composition which contains a significant amount of iron oxide was found to be suitable for enameling cast iron and non-pickled steel substrates. The inventive glass is suitable for applications requiring black color, acid resistance, thermal durability and water vapor resistance. In particular, the inventive glass can be used both as a ground coat and a cover coat.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.