PRODUCTION OF HYDROXY APATITE

PRODUCTION OF HYDROXY APATITE

PURPOSE:To obtain hydroxy apatite having a desired Ca/P ratio in good reproducibility, by adding quicklime and/or slaked lime to slurry of CaHPO4.2H2 O and water, and aging a reaction product. CONSTITUTION:CaO and/or Ca(OH)2 is gradually added to and reacted with slurry of CaHPO4.2H2O and water whil...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: NAKAHARA HIROMI, NAKASO YASUJI
Format: Patent
Sprache:eng
Schlagworte:
CHEMISTRY
COMPOUNDS THEREOF
INORGANIC CHEMISTRY
METALLURGY
NON-METALLIC ELEMENTS
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Beschreibung
Zusammenfassung:PURPOSE:To obtain hydroxy apatite having a desired Ca/P ratio in good reproducibility, by adding quicklime and/or slaked lime to slurry of CaHPO4.2H2 O and water, and aging a reaction product. CONSTITUTION:CaO and/or Ca(OH)2 is gradually added to and reacted with slurry of CaHPO4.2H2O and water while keeping pH=60 deg.C aging temperature for >=0.5hr, a solid reaction product is separated by a means such as filtration, etc., and an excess amount of Ca(OH)2 is washed and removed, to give hydroxy apatite useful as a material for biological use, etc.