Process for protecting a surface using silicate compounds
US5672390A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 20, 1995 |
| Grant date | Sep 30, 1997 |
| Priority date | — |
| Expiry date | Mar 20, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2111/00525
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A process for forming a protective layer on a rigid surface, such as a metal or wood surface, to provide protection against abrasion, corrosion, heat and fire. The process comprises first preparing the surface of the article. On metal articles, the surface can be prepared by cleaning the surface and then exposing the surface to concentrated phosphoric acid. On wood, the surface can be prepared by thoroughly cleaning the surface with hot water and detergent only. Preferably, the surface is prepared such that a uniform, continuous layer of liquid can be formed thereon. After the surface is prepared, a 10-16% (v/v) silicate-containing solution is then applied for 20 seconds and allowed to dry completely at 305.degree. F. to form a layer of silicate material over the surface. During the drying process, at least a portion of the sodium silicate is converted into silicon dioxide. An acid is then applied to the surface to form the protective layer on the surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.