Synthetic bone ash

Details Synthetic bone ash Synthetic bone ash

1980-06-03

1981-06-23

McCarthy, Helen M.

Compositions: coating or plastic

Coating or plastic compositions

Marking

106 45, 423305, 423311, C01B 1516, C01B 2526, C04B 3500

Patent

active

042748798

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.

REFERENCES:
patent: 3027229 (1962-03-01), Towey et al.
patent: 3379541 (1968-04-01), Tuvell
patent: 4097935 (1978-07-01), Jarcho
patent: 4195366 (1980-04-01), Jarcho

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