Method of coating an uncured mineral substrate
US6423382B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 24, 1999 |
| Grant date | Jul 23, 2002 |
| Priority date | — |
| Expiry date | Nov 24, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B41/70
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A high gloss coating on a mineral substrate, such as a roof tile or floor tile, can be achieved by a method comprising:i) applying a first coating consisting of an aqueous composition comprising a film forming polymeric binder to a surface of the uncured substrate;ii) exposing said first coating to hot air or infrared, ultraviolet or microwave radiation, for sufficient time for at least the surface of said coating remote from the substrate body to form a film of polymeric binder, andiii) applying a second coating consisting of an aqueous composition comprising a film forming polymeric binder on top of the first coating. After application of the second coating, the substrate and coatings are dried and cured, for example in an oven or autoclave.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.