Alkali metal silicate solutions and method of forming foundry products using the solutions
US4552202A · kind A · utility
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7Claims
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Key dates
| Filing date | Sep 30, 1982 |
| Grant date | Nov 12, 1985 |
| Priority date | — |
| Expiry date | Sep 30, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01B33/325
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Aqueous alkali metal silicate solutions are made by dissolving an alkali silica powder that includes insoluble impurities and putting the impurities into stable suspension with a suspending agent such as a cellulose derivative. When used as a foundry binder the solutions give improved early strength and improved breakdown properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.