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热词
    • 4. 发明授权
    • Charged porous filter
    • 充电多孔过滤器
    • US5114585A
    • 1992-05-19
    • US462283
    • 1989-12-27
    • Menahem KrausDiosie VelazquezChan-Hong Wang
    • Menahem KrausDiosie VelazquezChan-Hong Wang
    • B01D67/00
    • B01D67/0093B01D67/0011B01D2323/12B01D2323/30
    • A process for preparing charge modified filtration media including the steps of forming a filtration microporous or macroporous membranous or nonmembranous medium structure having internal and external surfaces and including a quaternizable nitrogen containing polymer exposed at the internal and external surfaces, permanently charging the exposed quaternizable nitrogen, and rendering the polymer insoluble in solution and permanently adhered within the filtration medium structure.Charge modified filtration media including a filtration medium structure as described having internal and external surfaces, characterized by a quaternizable nitrogen containing polymer exposed at the internal and external surfaces and having permanently charged quaternizable nitrogen. The quaternized nitrogen containing polymer is insoluble in solution and permanently adhered within the filtration medium structure.
    • 一种用于制备电荷改性过滤介质的方法,包括以下步骤:形成具有内部和外部表面的过滤微孔或大孔膜状或非膜性介质结构,并且包括在内表面和外表面暴露的可季铵化的含氮聚合物, 并使聚合物不溶于溶液并永久粘附在过滤介质结构中。 电荷改性过滤介质,包括如上所述的具有内部和外部表面的过滤介质结构,其特征在于在内部和外部表面暴露的具有季铵化的含氮聚合物并且具有永久带电的可季铵化的氮。 季铵化的含氮聚合物不溶于溶液并永久粘附在过滤介质结构中。