Powder processing with pressurized gaseous fluids
    4.
    发明授权
    Powder processing with pressurized gaseous fluids 有权
    用加压气态流体进行粉末处理

    公开(公告)号:US06858166B2

    公开(公告)日:2005-02-22

    申请号:US10268879

    申请日:2002-10-10

    CPC分类号: A61K9/1694 A61K9/1623

    摘要: Disclosed is a method of small particle precipitation, retention and dispersion of a solid or semi-solid material onto or into a carrier material. In this method, solute particles are precipitated from a pressurized gaseous fluid solution or a liquid solution and effectively retained and dispersed within a carrier material. This technique can be advantageously used in pharmaceutical processing to produce a blend of solid or semi-solid material particles and carrier material, a granulation of the solid or semi-solid material particles with carrier material, carrier material partially or fully coated with the solid or semi-solid material particles, or mixtures thereof.

    摘要翻译: 公开了一种将固体或半固体材料小颗粒沉淀,保留和分散在载体材料上或其中的方法。 在该方法中,溶质颗粒从加压的气态流体溶液或液体溶液中沉淀出来并有效地保留并分散在载体材料中。 该技术可有利地用于药物加工以产生固体或半固体材料颗粒和载体材料的混合物,固体或半固体材料颗粒与载体材料的颗粒,部分或完全涂覆有固体的载体材料或 半固体材料颗粒或其混合物。

    Methods for particle micronization and nanonization by recrystallization
from organic solutions sprayed into a compressed antisolvent
    5.
    发明授权
    Methods for particle micronization and nanonization by recrystallization from organic solutions sprayed into a compressed antisolvent 失效
    通过从喷射到压缩抗溶剂中的有机溶液重结晶进行颗粒微粉化和纳米化的方法

    公开(公告)号:US5874029A

    公开(公告)日:1999-02-23

    申请号:US723463

    申请日:1996-10-09

    摘要: A method and an apparatus useful for the production of microparticles and nanoparticles are disclosed in which a compressed fluid and a solution including a solvent and a solute are introduced into a nozzle to produce a mixture. The mixture is then passed out of the nozzle to produce a spray of atomized droplets. The atomized droplets are contacted with a supercritical antisolvent to cause depletion of the solvent in the droplets so that particles are produced from the solute. Preferably, these particles have an average diameter of 0.6 .mu.m or less. The invention can be used in the pharmaceutical, food, chemical, electronics, catalyst, polymer, pesticide, explosives, and coating industries, all of which have a need for small-diameter particles.

    摘要翻译: 公开了一种用于生产微粒和纳米颗粒的方法和装置,其中将压缩流体和包含溶剂和溶质的溶液引入喷嘴中以产生混合物。 然后将混合物从喷嘴中排出以产生雾化液滴的喷雾。 雾化的液滴与超临界反溶剂接触以引起液滴中溶剂的消耗,使得从溶质中产生颗粒。 优选地,这些颗粒的平均直径为0.6μm以下。 本发明可用于制药,食品,化工,电子,催化剂,聚合物,农药,爆炸物和涂料工业,所有这些都需要小直径颗粒。

    Method for extraction and reaction using supercritical fluids
    10.
    发明授权
    Method for extraction and reaction using supercritical fluids 有权
    使用超临界流体提取和反应的方法

    公开(公告)号:US06294194B1

    公开(公告)日:2001-09-25

    申请号:US09517883

    申请日:2000-03-03

    IPC分类号: A61K964

    摘要: Methods for removing soluble material from confined spaces within substrates such as containers, capsules and porous powders comprising extraction with supercritical fluids, the pressure of which is preferably modulated between an upper level and a lower level within a relatively narrow range of fluid pressure and density. The method permits enhanced extraction efficiency, catalytic reaction rates and ability to maintain catalyst activity.

    摘要翻译: 从诸如容器,胶囊和多孔粉末的基底内的密闭空间中除去可溶性材料的方法,其包括用超临界流体萃取,其压力优选在相对窄的流体压力和密度范围内在上层和下层之间调节。 该方法允许提高萃取效率,催化反应速率和维持催化剂活性的能力。