Melt-spun polysulfone semipermeable membranes and methods for making the same
    1.
    发明授权
    Melt-spun polysulfone semipermeable membranes and methods for making the same 失效
    熔融聚砜半透膜及其制备方法

    公开(公告)号:US06218441B1

    公开(公告)日:2001-04-17

    申请号:US09317657

    申请日:1999-05-24

    IPC分类号: C08J900

    摘要: The present invention discloses, inter alia, a composition useful for producing a homogeneous, semipermeable membrane, the composition comprising (1) a polysulfone compound, (2) a solvent, such as sulfolane, antypyrine, &dgr;-valerolactam, diethyl phthalate, and mixtures thereof, and (3) a non-solvent, such as poly(ethylene glycol), di(ethylene glycol), tri(ethylene glycol), glycerol, and mixtures thereof. Another aspect of this invention discloses methods for fabricating semipermeable membranes by homogeneously mixing the composition of the polysulfone compound, solvent, and non-solvent, melting the composition, and melt-spinning the molten composition. Another aspect of the present invention includes homogeneous, melt-spun, semipermeable membranes useful for liquid separation processes, such as, but not limited to, microfiltration, ultrafiltration, dialysis, and reverse osmosis.

    摘要翻译: 本发明尤其公开了一种用于制备均匀的半透膜的组合物,该组合物包含(1)聚砜化合物,(2)溶剂如环丁砜,茴香吡啶,δ-戊内酰胺,邻苯二甲酸二乙酯和混合物 ,和(3)非溶剂如聚(乙二醇),二(乙二醇),三(乙二醇),甘油及其混合物。 本发明的另一方面公开了通过均匀混合聚砜化合物,溶剂和非溶剂的组合物,熔融组合物和熔融组合物熔融纺丝来制造半透​​膜的方法。 本发明的另一方面包括用于液体分离过程的均匀的熔纺的半透膜,例如但不限于微滤,超滤,透析和反渗透。