Self-cleaning catalytic coating
US4180482A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 13, 1978 |
| Grant date | Dec 25, 1979 |
| Priority date | — |
| Expiry date | Jun 13, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03C2205/04
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A coating formed on a surface of an article, which is heated during use as typified by a cooking device, to accomplish catalytic oxidation decomposition of oil and grease spattered thereon. The coating is fundamentally a porous matrix layer of an inorganic binder having a matte surface and comprises, in the form of uniformly dispersed particles, an oxidation catalyst and a nondiscoloring material, for example a ferrite, which has the effect of concealing a change in color of the oxidation catalyst resulting from its catalytic action. Preferably the coating comprises additionally a solid acid catalyst such as a zeolite as a decomposition-inducing catalyst in order to acquire an improved catalytic self-cleaning ability at relatively low temperatures such as 200.degree.-300.degree. C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.