Synthetic bone ash
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United States of America Patent
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Jun 23, 1981
Issued Date -
N/A
app pub date -
Jun 3, 1980
filing date -
Mar 5, 1979
priority date (Note) -
Expired
status (Latency Note)
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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.
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