Solvent resistant nanofiltration membranes
    2.
    发明公开
    Solvent resistant nanofiltration membranes 审中-公开
    耐溶剂纳滤膜

    公开(公告)号:EP2269717A1

    公开(公告)日:2011-01-05

    申请号:EP10181774.0

    申请日:2007-08-10

    IPC分类号: B01D71/10 B01D71/12 C08B15/00

    摘要: The present invention relates to a nanofilter formed by using a porous ultrafiltration membrane as a precursor, and carefully controlling reaction conditions so as to maintain sufficient hydrophilic nature of the membrane while causing the pore structure to close to a nanofilter range (less than 400Daltons), This produces a solvent stable cellulose nanofiltration membrane capable of operating at satisfactory flux in aqueous solutions, and being low binding to organic biomaterials.

    摘要翻译: 本发明涉及通过使用多孔超滤膜作为前体而形成的纳米过滤器,并且仔细控制反应条件以保持膜的充分亲水性,同时使孔结构接近纳滤器范围(小于400道尔顿) 这产生了溶剂稳定的纤维素纳滤膜,其能够在水溶液中以令人满意的通量进行操作,并且与有机生物材料的低结合性。

    HYDROPHILIC FILM AND PROCESS FOR PRODUCING THE SAME
    5.
    发明公开
    HYDROPHILIC FILM AND PROCESS FOR PRODUCING THE SAME 失效
    HYDROPHILER FILM UND VERFAHREN ZUR HERSTELLUNG DESSELBEN

    公开(公告)号:EP0796648A1

    公开(公告)日:1997-09-24

    申请号:EP95936785.5

    申请日:1995-11-14

    IPC分类号: B01D71/12 B01D71/68

    CPC分类号: B01D67/0088

    摘要: This invention provides a hydrophilic membrane wherein a hydrophilic cellulose derivative of a number average molecular weight of 2000∼8000 is adsorbed irreversibly to a hydrophobic membrane of an aromatic polymer.
    Since an amount of leaching substances is extremely small, the membrane can be used suitably in such fields as medical applications ,electronics, etc. where even a quite small quantity of leaching substances from the membranes is limited especially small.

    摘要翻译: 本发明提供一种亲水膜,其中数均分子量为2000-3000的亲水性纤维素衍生物不可逆地吸附到芳族聚合物的疏水膜上。 由于一定量的浸出物质非常小,因此膜可以适用于诸如医疗用途,电子等领域,其中即使相当少量的来自膜的浸出物质的限制也特别小。

    Verfahren zum Beschichten cellulosischer Membranen
    7.
    发明公开
    Verfahren zum Beschichten cellulosischer Membranen 失效
    Verfahren zum Beschichten纤维素酶膜。

    公开(公告)号:EP0550879A1

    公开(公告)日:1993-07-14

    申请号:EP92121850.9

    申请日:1992-12-23

    申请人: Akzo Nobel N.V.

    IPC分类号: B01D71/12

    CPC分类号: B01D71/12

    摘要: Verfahren zur Verbesserung der Biokompatibilität von cellulosischen Flachmembranen, dadurch gekennzeichnet, daß die Flachmembranen während oder nach der Herstellung mit Celluloseethern und/oder Celluloseestern und/oder Cellulosecarbamaten beschichtet werden, deren Strukturen den Formeln

    entsprechen, worin Cell das Gerüst des unmodifizierten Cellulosemoleküls ohne Hydroxylgruppen ist und x dem Modifizierungsgrad entspricht, der im Bereich von 0,002 bis 3 liegt und worin R ein (gegebenenfalls substituierter) Alkyl- und/oder Alkenyl- und/oder Aryl- und/oder Arylalkyl-Rest ist und die Kohlenstoffkette des Restes R 1 bis 36 C-Atome enthält und durch Heteroatome wie O, S, N, unterbrochen sein kann und basische und/oder saure Gruppen wie -NR'₂, -COOR' und/oder -SO₃R' bzw. deren Salze enthält, wobei R'=H oder R ist.

    摘要翻译: 用于改善纤维素平膜的生物相容性的方法,其特征在于,在制造期间或之后,平膜被纤维素醚和/或纤维素酯和/或纤维素氨基甲酸酯包被,其结构对应于式 哪个Cell是没有羟基的未改性的纤维素分子的骨架,x对应于0.002至3范围内的修饰度,其中R是(取代或未取代的)烷基和/或烯基和/或芳基 和/或芳基烷基,并且基团R的碳链含有1至36个C原子,并且可以被诸如O,S,N的杂原子间隔,并且含有碱性和/或酸性基团如-NR'2,-COOR' 和/或-SO 3 R'或其盐,其中R'= H或R

    HYDROPHILIC POROUS MEMBRANE AND METHOD FOR PRODUCING HYDROPHILIC POROUS MEMBRANE

    公开(公告)号:EP3932528A1

    公开(公告)日:2022-01-05

    申请号:EP20762599.7

    申请日:2020-02-25

    摘要: Provided are a hydrophilic porous membrane including a porous membrane and a hydroxyalkyl cellulose retained in the porous membrane, in which the average pore size differs between two surfaces of the porous membrane, the hydroxyalkyl cellulose distributed in the thickness direction of the hydrophilic porous membrane exhibits two or more peaks of detection intensity in GPC, and the weight-average molecular weight Mw min of the peak that is detected latest among the above-mentioned peaks is less than 100,000; and a method for producing a hydrophilic porous membrane, the method including separately preparing a hydrophilizing liquid including a hydroxyalkyl cellulose having a smaller weight-average molecular weight and a hydrophilizing liquid including a hydroxyalkyl cellulose having a larger weight-average molecular weight, and applying each of the hydrophilizing liquids on two surfaces of the porous membrane or sequentially on one surface thereof.