Process for making systems for the controlled release of macromolecules
    5.
    发明授权
    Process for making systems for the controlled release of macromolecules 失效
    制备大分子控制释放系统的方法

    公开(公告)号:US4591496A

    公开(公告)日:1986-05-27

    申请号:US571007

    申请日:1984-01-16

    CPC分类号: A61K9/2027

    摘要: A new method for making polymeric systems for the sustained release of macromolecular drugs is described. The method consists of mixing drug and polymer, e.g. ethylene-vinyl acetate copolymer powders below the glass transition temperature of the polymer, and compressing the mixture at a temperature above the glass transition point. The macromolecule is not exposed to organic solvent during the fabrication process. The sustained release and bioactivity of macromolecules is unchanged throughout the pressure casting and release processes.

    摘要翻译: 描述了制备用于大分子药物的持续释放的聚合体系的新方法。 该方法包括将药物和聚合物混合,例如 乙烯 - 乙酸乙烯酯共聚物粉末低于聚合物的玻璃化转变温度,并在高于玻璃化转变点的温度下压制该混合物。 高分子在制造过程中不会暴露于有机溶剂中。 在整个压力铸造和释放过程中,大分子的持续释放和生物活性都不变。