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Patent Searching and Data


Title:
PRODUCTION OF APATITE
Document Type and Number:
Japanese Patent JPH03279204
Kind Code:
A
Abstract:

PURPOSE: To obtain a high-density sintered apatite compact according to ordinary sintering by dropping a phosphoric acid compound into an aqueous solution or suspension of a calcium compound so as to satisfy a specific Ca/P ratio.

CONSTITUTION: An aqueous solution of a phosphoric acid compound is dropped into an aqueous solution or suspension of a calcium compound and reacted therewith to produce apatite. In the process, the aqueous solution of the calcium compound is dropped so as to provide a Ca/P ratio within the range of >1.67 and ≤1.76. For example, phosphoric acid, potassium dihydrogenphosphate and ammonium hydrogenphosphate are cited as the phosphoric acid compound and, e.g. calcium hydroxide, calcium chloride and calcium nitrate are cited as the calcium compound.


Inventors:
MATSUMOTO TOMOO
TANIGUCHI YUKIO
AKIYAMA HITOSHI
Application Number:
JP8047490A
Publication Date:
December 10, 1991
Filing Date:
March 28, 1990
Export Citation:
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Assignee:
ASAHI OPTICAL CO LTD
International Classes:
A61K6/838; C01B25/32; (IPC1-7): A61K6/033; C01B25/32