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    • 10. 发明授权
    • Production of macrospherical particles for anti-perspirants and the like
    • 生产用于防汗剂的大球形颗粒等
    • US4089120A
    • 1978-05-16
    • US725752
    • 1976-09-23
    • James F. Kozischek
    • James F. Kozischek
    • A61K33/06A61J3/02A61K8/00A61K8/11A61K8/26A61K8/28A61K8/34A61K9/16A61Q15/00B01D1/18B01J2/02B01J2/04B05B3/10B29B9/00C08J3/12F26B7/00
    • A61Q15/00A61K8/11A61K8/26A61K8/28B01J2/02A61K2800/412Y10S159/27
    • A process and apparatus are provided for making hollow macrospherical particles. The particles themselves are particularly adapted for use as anti-perspirants. The particles have a diameter between about 10 and 74 microns, preferably predominating between 15 and 44 microns, and a greater than unit density. As such, they are not subject to deep lung penetration. The process for producing the particles comprises providing a solution containing the materials from which the particles are made, diffusing the solution through small pores by centrifugal force such that the resulting hollow particles have a diameter greater than the pore diameter, and drying the solution droplets in a stream of heated air. The apparatus for producing the macrospherical particles comprises a centrifugal atomizer having a porous sintered metal filter ring which is rotated inside a spray drying chamber. The filter is treated to produce hollow macrospheres having substantially smooth outer walls of such thickness that they can withstand normal shipment and handling without significant fragmentation.
    • 提供了一种制造中空的大球形颗粒的方法和装置。 颗粒本身特别适合用作防汗剂。 颗粒具有约10至74微米的直径,优选占15至44微米,并且大于单位密度。 因此,他们不会深入肺部渗透。 制备颗粒的方法包括提供含有制备颗粒的材料的溶液,通过离心力将溶液扩散通过小孔,使得所得中空颗粒的直径大于孔径,并将溶液液滴干燥 一股热的空气。 用于制造大球形颗粒的装置包括具有在喷雾干燥室内旋转的多孔烧结金属过滤器环的离心式雾化器。 处理过滤器以产生具有这样厚度的基本平滑的外壁的中空宏观球体,使得它们能够承受正常的装运和处理而没有显着的碎裂。