会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 79. 发明申请
    • Production of crystalline materials by using high intensity ultrasound
    • 通过使用高强度超声波生产结晶材料
    • US20050188913A1
    • 2005-09-01
    • US10514883
    • 2003-05-13
    • Linda McCauslandJohn Perkins
    • Linda McCauslandJohn Perkins
    • C07H3/02B01D9/00B01D9/02C07K5/072C30B1/00
    • B01D9/0013B01D9/0036B01D9/0063B01D9/0081C07K5/0613Y10T117/1024Y10T117/1028
    • A crystalline material sufficiently pure for use in pharmaceuticals may be made by forming a saturated solution of the material, changing the temperature of the solution so it becomes supersaturated, and subjecting the solution to irradiation by high intensity ultrasound, the frequency of the ultrasound being scanned over a range of frequencies. For example the ultrasound may be varied between 19.5 and 20.5 kHz, and this variation may be sinusoidal. Preferably the ultrasound is provided only briefly, say for less than 5 s, before allowing the solution to cool gradually without further irradiation. The ultrasound may be applied using a vessel with an array of ultrasonic transducers attached to a wall, so each transducer radiates no more than 3 W/cm2 yet the power dissipation within the vessel is between 25 and 150 W/litre. This method can reduce the metastable zone width to less than 10 K. It is applicable in particular to aspartame.
    • 可以通过形成饱和的材料溶液,改变溶液的温度,使其变得过饱和,并通过高强度超声波对该溶液进行照射,使超声频率被扫描,可以制备足够纯的用于药物的结晶物质 在一个频率范围内。 例如,超声可以在19.5和20.5kHz之间变化,并且该变化可以是正弦的。 优选地,在允许溶液逐渐冷却而不进一步照射之前,仅提供超声波,例如少于5秒。 可以使用具有附接到壁的超声波换能器阵列的血管来应用超声波,因此每个换能器辐射不超过3W / cm 2,但是容器内的功率耗散在25和150之间 W /升。 该方法可将亚稳区宽度减小到10K以下。特别适用于阿斯巴甜。