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    • 6. 发明申请
    • Filter For Water Treatment Filtering and Method For Producing The Same
    • 过滤水处理过滤及其生产方法
    • US20140061122A1
    • 2014-03-06
    • US14005143
    • 2012-03-14
    • Tomoka OguraKeiichi Yamakawa
    • Tomoka OguraKeiichi Yamakawa
    • B01D71/36
    • B01D71/36B01D69/12B01D71/38B01D2323/30B01D2325/30B01D2325/36C02F1/44C02F2303/20C08J7/04C08J9/365C08J2327/18C08J2429/04
    • The problem to be solved by the present invention is to provide a filter medium for a water treatment filter having contradictory characteristics, that is, hydrophilicity and chemical resistance, and a long life, and to provide the production method thereof. A filter medium for a water treatment filter according to the present invention is characterized in comprising a porous base material having a hydrophilic coating layer; wherein the hydrophilic coating layer has a cross-linked hydrophilic polymer and a high electron density part; a hydrophilic polymer in the cross-linked hydrophilic polymer is cross-linked with an aliphatic saturated hydrocarbon group which may contain one or more functional groups selected from a group consisting of an ether group, a hydroxy group and an amino group; the high electron density part has π electrons; and the high electron density part is covalently bonded to the cross-linked hydrophilic polymer.
    • 本发明要解决的问题是提供一种具有矛盾特性,即亲水性和耐化学性,寿命长的水处理过滤器用过滤介质,提供其制造方法。 根据本发明的用于水处理过滤器的过滤介质的特征在于包括具有亲水涂层的多孔基材; 其中所述亲水性涂层具有交联的亲水性聚合物和高电子密度部分; 交联亲水性聚合物中的亲水性聚合物与可以含有一个或多个选自醚基,羟基和氨基的官能团的脂族饱和烃基交联; 高电子密度部分具有π电子; 并且高电子密度部分共价键合到交联的亲水性聚合物上。
    • 8. 发明授权
    • Membrane, method of making same and heat exchanger furnished with said membrane
    • 膜,制造方法和配有所述膜的热交换器
    • US07572321B2
    • 2009-08-11
    • US11265755
    • 2005-11-01
    • Keiichi YamakawaTakashi Imai
    • Keiichi YamakawaTakashi Imai
    • B01D53/22
    • B01D69/10B01D67/0009B01D69/02B01D69/12B01D71/38B01D2325/02B01D2325/20B32B3/266B32B5/022B32B5/245B32B15/18B32B27/065B32B27/08B32B27/12B32B27/306B32B27/322B32B2266/025B32B2307/3065B32B2307/7166B32B2307/726B32B2509/00F24F3/147F24F2003/1435F28D21/0015Y10S55/05
    • A membrane 12 that exhibits superior condensation resistance regardless of the type of moisture-permeable resin, that has satisfactory adhesion between a porous film and a reinforcing member, and that can be manufactured in a simple manner.The membrane 12 is a laminated article 23 containing a porous film 20 and a reinforcing member 40, and the reinforcing member 40 has a moisture-permeable resin layer 30 on the side of an interface 50 with the porous film 20. To reliably form the moisture-permeable resin layer (moisture-permeable resin film) 30, the average pore diameter of the porous film 20 is preferably 0.01 to 10 μm, and the porosity of the reinforcing member 40 is preferably 30 to 95%. According to the membrane 12 of the present invention, even if the moisture-permeable resin is water-soluble (for example, polyvinyl alcohol), condensation resistance is still satisfactory. If the difference between the critical surface tension γc2 of the reinforcing member 40 and the critical surface tension γc1 of the porous film 20 (γc2−γc1) is set in advance to −5 mN/m or greater, the moisture-permeable resin layer 30 can be disposed internally at a specific location.
    • 无论透湿性树脂的种类如何,具有良好的冷凝性,膜多孔膜与增强部件之间的密合性良好,且能够以简单的方式制造的膜12。 膜12是包含多孔膜20和加强构件40的层压制品23,加强构件40在与多孔膜20的界面50侧具有透湿性树脂层30.为了可靠地形成水分 - 透湿树脂层(透湿树脂膜)30,多孔膜20的平均孔径优选为0.01〜10μm,加强构件40的孔隙率优选为30〜95%。 根据本发明的膜12,即使透湿性树脂是水溶性的(例如聚乙烯醇),则耐冷凝性仍然令人满意。 如果预先将加强构件40的临界表面张力gammac2与多孔膜20的临界表面张力gammac1(gammac2-gammac1)之间的差设定在-5mN / m以上,则透湿性树脂层30 可以在特定位置内部放置。