Enamel frit composition for a low-expansion crystallized glass and enamel-coated low-expansion crystallized glass plate using the same
US5691254A · kind A · utility
Inventors
Key dates
| Filing date | Nov 26, 1996 |
| Grant date | Nov 25, 1997 |
| Priority date | — |
| Expiry date | Nov 26, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03C2217/72
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
In order to provide an enamel frit composition for a low-expansion crystallized glass, capable of producing an enamel coating excellent in abrasion resistance and acid resistance without occurrence of cracks by using glass powder which does not contain any harmful component such as PbO, and to provide an enamel-coated low-expansion crystallized glass plate using the enamel frit composition, the enamel frit composition for a low-expansion crystallized glass essentially consists 40-98 wt % glass powder, 1-55 wt % coloring pigment, and 0-54 wt % filler. The glass powder consists, by weight, of 55-72% SiO.sub.2, 4-8% Al.sub.2 O.sub.3, 14-22% B.sub.2 O.sub.3, 2-4% BaO, 5.1-15% Na.sub.2 O, 0-2% Li.sub.2 O, 0-2.8% K.sub.2 O, and 0-2% F.sub.2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.