Aluminum phosphates and binder compositions/ceramic materials comprised thereof
US5496529A · kind A · utility
23Cited by
8References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 17, 1994 |
| Grant date | Mar 5, 1996 |
| Priority date | — |
| Expiry date | Mar 17, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B35/447
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Novel aluminum phosphates, in particular amorphous aluminum phosphate powders having a BET specific surface no greater than 25 m.sup.2 /g, well suited as binders/hardeners or for the production of ceramic shaped articles, are prepared by reacting at least one aluminum compound, e.g., an aluminum oxide, hydroxide or oxyhydroxide, with phosphoric acid or an aluminum phosphate, e.g., an acid aluminum orthophosphate, in a liquid reaction medium devoid of inorganic acid anions other than of phosphoric acid, and then spray- or freeze-drying the suspension thus obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.