Title:
PRODUCTION OF CALCIUM PHOSPHATE-BASED CERAMIC
Document Type and Number:
Japanese Patent JP3725935
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a method of producing a calcium phosphate-based ceramic by readily preparing a stable solution containing calcium and phosphorus without inducing sedimentation of calcium component and drying the solution, then baking.
SOLUTION: A salt of calcium such as nitrate or chloride is dissolved in a solvent, especially an organic solvent such as methanol or ethanol, and further a chelating agent containing phosphorus such as a phosphonic acid derivative is added to the solution, and stirred. then, the surface of a base material such as titanium or alumina is coated with the solution and dried to remove the solvent. An crganic component is removed by subjecting to heat-treatment at 250-400°C for 5-20min and the residual is baked at 600-1,300°C to obtain a uniform calcium phosphate-based ceramic such as hydroxyapatite or calcium phosphate. When a base material previously formed in a shape of an organic hard tissue-substituting part material, the organic hard tissue-substituting part material having high strength and excellent in organic activity is obtained.
Inventors:
Yasuyuki Mizushima
Mitsufumi Okada
Okuyama Masahiko
Mitsufumi Okada
Okuyama Masahiko
Application Number:
JP9337396A
Publication Date:
December 14, 2005
Filing Date:
March 21, 1996
Export Citation:
Assignee:
Nippon Special Ceramics Co., Ltd.
International Classes:
A61L27/00; C01B25/32; C04B35/447; (IPC1-7): C04B35/447; C01B25/32
Domestic Patent References:
| JP7034329A | ||||
| JP59207818A | ||||
| JP3032676A | ||||
| JP62046949A | ||||
| JP2102165A | ||||
| JP3016955A | ||||
| JP63100006A | ||||
| JP2030653A | ||||
| JP2014866A |
Attorney, Agent or Firm:
Kiyoshi Kojima
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