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    • 6. 发明申请
    • METHOD FOR PREPARATION OF POLYMER MICROPARTICLES FREE OF ORGANIC SOLVENT TRACES
    • 不含有机溶剂的聚合物微球的制备方法
    • WO1998017710A1
    • 1998-04-30
    • PCT/CA1997000797
    • 1997-10-24
    • BIO SYNTECH LTD.CHENITE, AbdellatifCHAPUT, CyrilSELMANI, Amine
    • BIO SYNTECH LTD.
    • C08J03/12
    • C08J3/005A61K9/1635A61K9/1641A61K9/1647A61K9/1694A61K9/5031C08J3/12C08J2367/02Y10S514/963Y10T428/2982Y10T428/2989
    • The present invention relates to a new method for the production of polymer microparticles. The method is carried out in the absence of organic solvent, and consists in the steps of (a) combining first and second polymers, the first and second polymers being incompatible or immiscible, (b) heating the combination obtained in step (a) so as to melt the first and second polymers; (c) shaking the melted polymers obtained in step (b) under conditions effective to produce a biphasic system, the biphasic system comprising a dispersed phase and a matrix continuous phase, the dispersed phase consisting of a dispersion of the first polymer, the matrix continuous phase comprising the second polymer, the dispersed phase containing microparticles of the first polymer dispersed in the matrix continuous phase; (d) solidifying the biphasic system obtained in step (c) so as to keep the microparticles of the first polymer dispersed in the matrix continuous phase; and (e) separating and isolating the microparticles of the first polymer from the matrix continuous phase, wherein the first polymer in said dispersed phase is water-insoluble, while the second polymer forming the continuous phase is water-soluble.
    • 本发明涉及一种生产聚合物微粒的新方法。 该方法在不存在有机溶剂的情况下进行,并且包括以下步骤:(a)将第一和第二聚合物混合,第一和第二聚合物不相容或不混溶,(b)将步骤(a)中获得的组合加热 以熔化第一和第二聚合物; (c)在有效产生双相系统的条件下振荡步骤(b)中获得的熔融聚合物,所述双相系统包含分散相和基质连续相,所述分散相由第一聚合物的分散体,基体连续 包含第二聚合物的相,所述分散相含有分散在基体连续相中的第一聚合物的微粒; (d)固化步骤(c)中获得的双相体系,以使第一聚合物的微粒分散在基质连续相中; 和(e)从基质连续相分离和分离第一聚合物的微粒,其中所述分散相中的第一聚合物是水不溶性的,而形成连续相的第二聚合物是水溶性的。