Process for producing an inorganic foam
US4812170A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 27, 1987 |
| Grant date | Mar 14, 1989 |
| Priority date | — |
| Expiry date | Aug 27, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B38/02
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process for producing an inorganic foam includes mixing a metallic compound, such as aluminum and/or magnesium nitrate, into a slurry with an acid or acidic solution, such as acid phosphate solution, and then heating the slurry to a predetermined temperature for a sufficient length of time to decompose the metallic compound to the metallic oxide. After the decomposition, reaction can occur between the metallic oxide and the acid or acidic solution to produce a strong binding medium for the foam. As formation, and consequently hardening, of the binding medium cannot commence until after the heating stage, hardening of the binding medium can be controlled to prevent premature hardening before the binding medium is applied to its working environment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.