METHOD FOR CONTROLLING PERMEABILITY BY HIGH FREQUENCY WAVE AND METHOD FOR PRODUCING ORGANIC MEMBRANE FOR SEPARATION
    12.
    发明申请
    METHOD FOR CONTROLLING PERMEABILITY BY HIGH FREQUENCY WAVE AND METHOD FOR PRODUCING ORGANIC MEMBRANE FOR SEPARATION 审中-公开
    用于控制高频渗透性的方法和用于分离的生产有机膜的方法

    公开(公告)号:WO01093992A1

    公开(公告)日:2001-12-13

    申请号:PCT/JP2001/004449

    申请日:2001-05-28

    Abstract: A method for controlling the permeability of a substance to be separated through an organic membrane for separation, in a process of separating substances by the organic membrane, characterized in that it comprises irradiating the organic membrane with a high frequency wave, thereby causing vibration/rotation of a molecule or a domain of molecules constituting the membrane and thus changing the molecular structure and/or polarity of the membrane, to change the permeability of the substance to be separated through the membrane; and a method for producing an organic membrane for separation, characterized in that the permeability of the organic membrane is controlled through irradiating the membrane with a high frequency wave in a process of forming the membrane.

    Abstract translation: 在通过有机膜分离物质的过程中,控制通过有机膜分离的物质的渗透性的方法,其特征在于,其包括用高频波照射有机膜,由此引起振动/旋转 构成膜的分子或分子结构域,从而改变膜的分子结构和/或极性,以改变通过膜分离的物质的渗透性; 以及分离用有机膜的制造方法,其特征在于,在形成膜的过程中,通过用高频波照射膜来控制有机膜的渗透性。

    ANTIMICROBIAL SEMI-PERMEABLE MEMBRANES
    13.
    发明申请
    ANTIMICROBIAL SEMI-PERMEABLE MEMBRANES 审中-公开
    抗微生物半透膜

    公开(公告)号:WO0000268A8

    公开(公告)日:2000-10-12

    申请号:PCT/US9914692

    申请日:1999-06-29

    Inventor: PATIL ARVIND S

    Abstract: Semi-permeable membranes made from synthetic polymers are treated with a non-leaching antimicrobial agent to prevent bio-fouling and bacterial breakthrough. The semi-permeable membranes include a polymeric material and a non-leaching antimicrobial agent that is incorporated into and homogeneously distributed throughout the polymeric material. In one embodiment, the polymeric material is cellulose acetate. In another embodiment, which utilizes thin film composite polyamide membranes (10), the antimicrobial agent is incorporated in a microporous polysulfone layer (14) that is sandwiched between a reinforcing fabric (16) and an ultrathin polyamide material (12). The invention also includes a treatment of flat and hollow fiber semi-permeable membranes made with polysulfones and polyvinylidene fluoride. The membranes may be used in reverse osmosis, ultrafiltration, and microfiltration applications.

    Abstract translation: 用合成聚合物制成的半透膜用非浸出抗菌剂处理以防止生物结垢和细菌突破。 半透膜包括聚合材料和非浸出抗微生物剂,其被并入并均匀分布在整个聚合物材料中。 在一个实施方案中,聚合物材料是醋酸纤维素。 在利用薄膜复合聚酰胺膜(10)的另一个实施方案中,将抗微生物剂掺入夹在增强织物(16)和超薄聚酰胺材料(12)之间的微孔聚砜层(14)中。 本发明还包括用聚砜和聚偏二氟乙烯制成的扁平和中空纤维半透膜的处理。 膜可用于反渗透,超滤和微滤应用。

    CELLULOSE ACETATE SEMIPERMEABLE MEMBRANE AND METHOD FOR PRODUCING THE SAME
    14.
    发明申请
    CELLULOSE ACETATE SEMIPERMEABLE MEMBRANE AND METHOD FOR PRODUCING THE SAME 审中-公开
    纤维素乙酸酯可切割膜及其制造方法

    公开(公告)号:WO00009247A1

    公开(公告)日:2000-02-24

    申请号:PCT/JP1999/002290

    申请日:1999-04-28

    CPC classification number: B01D69/02 B01D69/08 B01D71/16 D01D5/24 D01F2/28

    Abstract: A cellulose acetate semipermeable membrane which exhibits a high filtration velocity, has a high mechanical strength and is unsusceptible to degradation by a microorganism, characterized in that it comprises a cellulose acetate having an alpha -cellulose content of 99 wt.% or more, a 6 wt/vol % viscosity at 25 +/- 1 DEG C of 20 to 220 mPa.s and an acetylation degree of 58 to 62 %. This cellulose acetate semipermeable membrane is particularly suitable for a hollow yarn membrane.

    Abstract translation: 具有高过滤速度的醋酸纤维素半透膜具有高的机械强度,并且不易被微生物降解,其特征在于它包含α-纤维素含量为99重量%以上的乙酸纤维素,6 25 +/- 1℃下的重量/体积%粘度为20〜220mPa.s,乙酰化度为58〜62%。 该醋酸纤维素半透膜特别适用于中空丝膜。

    MEMBRANES FOR ABSORBENT PACKETS
    15.
    发明申请
    MEMBRANES FOR ABSORBENT PACKETS 审中-公开
    吸塑包装膜

    公开(公告)号:WO1991008778A1

    公开(公告)日:1991-06-27

    申请号:PCT/US1990006998

    申请日:1990-11-30

    CPC classification number: B01D71/16 A61L15/28 B01D61/005 C08L1/12

    Abstract: An absorbent article comprising a cellulosic membrane about 5 to 50 $(g)mm thick prepared by casting a film from solution of a cellulose derivative in a suitable solution and these formed into a packet which encapsulates an osmotic promoter, particularly sodium chloride, sugar or other suitable compound, peferably having a molecular weight below about 500. The packet is capable of tacking up at least 0.001 g/cm2/min of water and retaining it against an external pressure of at least 0.689 kPa.

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