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    • 6. 发明申请
    • METHOD FOR PRODUCING CRYSTALLINE ACTIVE INGREDIENT PARTICLES
    • 生产结晶活性成分颗粒的方法
    • US20130040141A1
    • 2013-02-14
    • US13640025
    • 2011-03-30
    • Detlef GraweSabine Gliesing
    • Detlef GraweSabine Gliesing
    • A61K9/16B02C23/18B02C19/18
    • B01D9/0013A61K9/1688B01D9/0036B01D9/0054B01D9/0081Y10T428/2982
    • A method and device for producing crystalline active ingredient particles. The active ingredient is crystallized from a supersaturated solution on the surface of particles of the active ingredient. A suspension of active ingredient particles is subjected to wet grinding in a supersaturated solution of the active ingredient in a first module. At least a part of the suspension is fed from the first module into the second module where it is cooled and simultaneously subjected to ultrasound. The suspension is fed back into the first module after cooling and being subjected to ultrasound. Active ingredient solution and optionally antisolvent are added to the suspension and active ingredient particles and liquid phase are extracted. A relative supersaturation of the active ingredient in the liquid phase of the suspension, relative to the entire liquid phase, is ≦90%, and the extracted active ingredient particles comprise a mean particle size of 10-500 μm.
    • 一种生产结晶活性成分颗粒的方法和装置。 活性成分从活性成分颗粒表面的过饱和溶液中结晶。 将活性成分颗粒的悬浮液在第一模块中的活性成分的过饱和溶液中进行湿磨。 悬浮液的至少一部分从第一模块进入第二模块,在其中冷却并同时进行超声波。 冷却后将悬浮液反馈回第一组件并进行超声波处理。 将活性成分溶液和任选的反溶剂加入悬浮液中,提取活性成分颗粒和液相。 相对于整个液相,悬浮液的液相中活性成分的相对过饱和度为90%,提取的活性成分颗粒的平均粒径为10-500μm。
    • 10. 发明授权
    • Method for isolating pharmaceutically exploitable etidronate disodium
    • 用于分离药学上可利用的依替膦酸二钠的方法
    • US06974885B2
    • 2005-12-13
    • US10381535
    • 2001-09-28
    • Detlef GraweBarbara SchmidtHarald Raethe
    • Detlef GraweBarbara SchmidtHarald Raethe
    • C07F9/38C07C409/04
    • C07F9/386
    • The method of isolating an anhydrous etidronate disodium particulate includes preparing a liquid-liquid dispersion consisting of an aqueous-organic phase and an etidronate-disodium-salt-containing aqueous phase; adjusting a temperature of the liquid-liquid dispersion to between 0 and 30° C. and intensely agitating so that a coarse-particle fraction precipitates from the liquid-liquid dispersion, then drawing off a fine-particle suspension and allowing a fine-particle fraction to precipitate from it and filtering and drying the coarse particle fraction. In a preferred embodiment the fine-particle fraction is separated from the fine-particle suspension for recycling The resulting anhydrous etidronate disodium particulate has a grain size of from about 0.1 to 1 mm and a bulk density of 0.4 to 0.6 g/cm2 with good properties for pharmaceutical applications.
    • 分离无水依替膦酸二钠颗粒的方法包括制备由水 - 有机相和含有硝酸根 - 二钠盐的水相组成的液 - 液分散体; 将液 - 液分散体的温度调节在0和30℃之间并强烈搅拌,使得粗液颗粒分数从液 - 液分散体中沉淀出来,然后除去细粒悬浮液,并使细颗粒分数 从中沉淀并过滤并干燥粗颗粒级分。 在一个优选的实施方案中,将细颗粒级分与细颗粒悬浮液分离以进行再循环。得到的无水埃硝膦酸二钠颗粒的颗粒尺寸为约0.1至1mm,堆积密度为0.4至0.6g / 2 具有良好的药物应用性能。