反応式
C(=O)([O-])[O-:2].[Ca+2:5].[P:6]([O-:10])([O-:9])([OH:8])=[O:7].[Ca+2]>O>[OH2:2].[P:6]([O-:10])([O-:9])([O-:8])=[O:7].[Ca+2:5].[P:6]([O-:10])([O-:9])([O-:8])=[O:7].[Ca+2:5].[Ca+2:5]参加物
実験手順
Powdery calcium carbonate and a powdery dihydrate of calcium monohydrogenohosphate are weighed to get a Ca/P ratio of 1.45 to 1.67. The powdery mixture thus prepared is then added pure water at a temperature of 30° C. or higher to obtain an aqueous slurry having a concentration of about 10% by weight. Thereafter, the aqueous slurry is subjected to a rotational attrition by using a ball mill to conduct a mechanochemical reaction of the calcium carbonate with the dihydrate of calcium monohydrogenphosphate. The slurry is then dried completely at 80° C., followed by pulverization to yield a dry powder of calcium phosphate hydrate. The dry powder is calcinated at a temperature ranging from 720° to 1,150° C. for 1-10 hours or more to give calcium phosphate powder, which is molded in a desired shape and is sintered at a certain temperature to obtain a sintered body of calcium phosphate. The calcium phosphate and the sintered body thereof, thus prepared, have an assured biological safety in that the calcium phosphate is free from hemolysis, antigenicity and cytotoxicity.
後処理
- customThe powdery mixture thus prepared
- customhigher to obtain an aqueous slurry
- customThe slurry is then dried completely at 80° C.
出典と根拠
- ORDレコード
- ord-a001571ae0ef40f18d3656181af2c901
- 出典データセット
- uspto-grants-1994_06
- 特許番号
- US05322675
関連ノート
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