Synthetic bone ash
US4274879A · kind A · utility
21Cited by
4References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 3, 1980 |
| Grant date | Jun 23, 1981 |
| Priority date | — |
| Expiry date | Jun 3, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B33/24
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Hydroxyapatite suitable for incorporation as a synthetic bone ash in a "bone" china body is produced by continuously contacting a stream of a slurry of hydrated lime with a stream of at least about 60% by weight phosphoric acid at an approximately stoichiometric ratio of 10 Ca(OH).sub.2 to 6 H.sub.3 PO.sub.4 and a temperature of from about 80.degree. to about 85.degree. C. at a controlled reaction mixture of pH of from about 9.0 to about 11.0 and then calcining at a temperature of at least 1,000.degree. C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.