Article having self-cleaning coating
US4147835A · kind A · utility
29Cited by
6References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 18, 1977 |
| Grant date | Apr 3, 1979 |
| Priority date | — |
| Expiry date | Apr 18, 1997 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03C2205/04
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A slip containing a frit and an oxidizing catalyst is sprayed over a substrate and fused at a temperature as low as 550.degree. C. The frit consists of 15-60% by weight of SiO.sub.2, 9-35% of B.sub.2 O.sub.3, 10-30% Na.sub.2 O, 1-25% of Al.sub.2 O.sub.3, 0-20% of Li.sub.2 O, 0-10% of K.sub.2 O and 0-10% of CaO but must have at least two of Li.sub.2 O, K.sub.2 O and CaO. The oxidizing catalyst is MnOx or CuCO.sub.3 Cu(OH).sub.2 or a mixture thereof, the content being preferably between 5 and 50% by weight. The self-cleaning is effected at a temperature as low as at 280.degree. C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.