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    • 25. 发明申请
    • CALCIUM PHOSPHATE PARTICLES AND PRODUCTION THEREOF
    • 磷酸钙颗粒及其生产
    • WO2005003028A3
    • 2005-06-23
    • PCT/FR2004001666
    • 2004-06-29
    • RHODIA CHIMIE SACHANE-CHING JEAN-YVESBOISSIERE CEDRICMANN STEPHEN
    • CHANE-CHING JEAN-YVESBOISSIERE CEDRICMANN STEPHEN
    • C01B25/32
    • C01B25/32
    • The invention relates to particles of calcium phosphate platelets with a monetite structure, the thickness of the platelets being 0.005 µm to 0.2 µm, the porous volume, corresponding to pores with a diameter less than 1 µm, measured with mercury, is at least 0.30 ml/g and having a mean diameter, d50, of 5 µm to 15 µm. Also disclosed are particles of calcium phosphate fibres with apatite structure, the porous volume of which, measured by mercury porosimetry and corresponding to the pores with diameter less than 1 micron, is at least 0.40 ml/g, the specific surface of which is at least 150 m /g and the means diameter, d50, is 5 µm to 15 µm. The invention further relates to a method for the production of said particles of calcium phosphate and the use of said particles, whereby the particles obtained are used as reinforcing filler, thermal insulation filler, pharmaceutical excipient, polishing agent, support material, construction materials, and additive for bucco-dental formulations such as toothpastes or as encapsulating agent.
    • 本发明涉及具有三斜磷钙石结构的磷酸钙血小板的颗粒,血小板的厚度为0.005μm至0.2μm,对应于用汞测量的直径小于1μm的孔的多孔体积为至少0.30ml / g并且具有5μm至15μm的平均直径d50。 还公开了具有磷灰石结构的磷酸钙纤维颗粒,其孔隙体积通过水银孔隙率测量法测量并对应于直径小于1微米的孔隙,其至少0.40ml / g,其比表面至少为 150平方米/克,平均直径d50为5微米至15微米。 本发明进一步涉及生产所述磷酸钙颗粒的方法和所述颗粒的用途,由此将所得颗粒用作增强填料,绝热填料,药物赋形剂,抛光剂,载体材料,建筑材料和 颊牙用制剂的添加剂,例如牙膏或作为胶囊剂。