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    Process for making microporous membranes having gel-filled pores, and separations methods using such membranes
    3.
    发明授权
    Process for making microporous membranes having gel-filled pores, and separations methods using such membranes 失效
    制造具有凝胶填充孔的微孔膜的方法和使用这种膜的分离方法

    公开(公告)号：US5160627A

    公开(公告)日：1992-11-03

    申请号：US815297

    申请日：1991-12-27

    Applicant: Edward L. Cussler ,  Gunilla E. Gillberg-LaForce ,  Michael J. Sansone ,  David K. Schisla

    Inventor： Edward L. Cussler ,  Gunilla E. Gillberg-LaForce ,  Michael J. Sansone ,  David K. Schisla

    IPC: B01D67/00 ,  B01D69/10 ,  B01D69/14

    CPC classification number: B01D67/0088 ,  B01D69/10 ,  B01D69/141 ,  Y10S264/48 ,  Y10S264/62

    Abstract: A process is provided for modifying the properties of a hydrophobic microporous membrane which includes the steps of first providing a hydrophobic microporous membrane, treating it with a surfactant to render the membrane hydrophilic, wetting the membrane with an aqueous solution of a polyol such as polyvinyl alcohol (PVA) and divinyl sulfone (DVS) or a precursor thereof, washing the membrane with water to displace the polyol/DVA from the exterior of the membrane while retaining it in the pores of the membrane, and crosslinking the polyol/DVS into an aqueous gel to yield a hydrophilic microporous membrane having pores filled with an aqueous polyol/DVS gel, the exterior of the membrane being unobstructed by gel. The modified membranes produced according to the process are useful in carrying out chromatographic separations.

    Abstract translation: 提供了一种用于改性疏水性微孔膜的性质的方法，该方法包括以下步骤：首先提供疏水性微孔膜，用表面活性剂处理以使膜具有亲水性，用多元醇水溶液润湿膜，例如聚乙烯醇 （PVA）和二乙烯基砜（DVS）或其前体，用水洗涤膜以将多元醇/ DVA从膜的外部置换，同时将其保留在膜的孔中，并将多元醇/ DVS交联成水 凝胶以产生具有填充有水性多元醇/ DVS凝胶的孔的亲水微孔膜，膜的外部不被凝胶阻挡。 根据该方法制备的改性膜可用于进行色谱分离。

    Modified microporous structures
    4.
    发明授权
    Modified microporous structures 失效
    改性微孔结构

    公开(公告)号：US5049275A

    公开(公告)日：1991-09-17

    申请号：US539096

    申请日：1990-06-15

    Applicant: Gunilla E. Gillberg-LaForce ,  Eric M. Gabriel

    Inventor： Gunilla E. Gillberg-LaForce ,  Eric M. Gabriel

    IPC: B01D61/38 ,  B01D67/00 ,  B01D69/14 ,  C08J9/40 ,  H01M2/16

    CPC classification number: B01D67/0088 ,  B01D61/38 ,  B01D69/141 ,  C08J9/405 ,  H01M2/1653

    Abstract: A pore modified microporous membrane is disclosed which is made by the process of incorporating a polymerizable vinyl monomer within the pores of a microporous membrane followed by polymerization to secure the resulting polymer within the pores. The process is particularly suitable for modifying a hydrophobic microporous membrane with a hydrophilic polymer, as occurs for example when polyacrylic acid is secured into the pores of a polypropylene microporous membrane. In further applications of the present invention, the inventive method may be used to produce liquid membrane supports for use with or without active carriers.

    Abstract translation: 公开了一种孔改性微孔膜，其通过在微多孔膜的孔内引入可聚合乙烯基单体然后进行聚合以将所得聚合物固定在孔内的方法制备。 该方法特别适用于用亲水聚合物改性疏水性微孔膜，例如当将聚丙烯酸固定在聚丙烯微孔膜的孔中时。 在本发明的另外的应用中，本发明的方法可以用于制备用于或不与活性载体一起使用的液膜载体。

    Process for the surface modification of polyester material and the polyester material so modified
    5.
    发明授权
    Process for the surface modification of polyester material and the polyester material so modified 失效
    聚酯材料表面改性和聚酯材料改性方法

    公开(公告)号：US4569974A

    公开(公告)日：1986-02-11

    申请号：US705157

    申请日：1985-02-25

    Applicant: Gunilla E. Gillberg-LaForce ,  Ronald N. DeMartino

    Inventor： Gunilla E. Gillberg-LaForce ,  Ronald N. DeMartino

    IPC: D06M15/507 ,  C08F283/00 ,  C08G63/76 ,  C08L67/00

    CPC classification number: D06M15/507

    Abstract: Surface modification of polyester material is obtained by contacting the material in substantially non-crystallized form with a non-crystallizable oligomer. The oligomer has ester linkages and is prepared from a reaction mixture which includes at least one polyol having a functionality greater than three and selected from the group consisting of pentaerythritol, low molecular weight polymers of pentaerythritol, glycerol, low molecular weight polymers of glycerol and mixtures thereof. After contact with the oligomer, the polyester is crystallized. The modified polyester material exhibits improved properties such as hydrophilicity and/or adhesive bonding.

    Abstract translation: 通过使基本上非结晶形式的材料与不可结晶的低聚物接触来获得聚酯材料的表面改性。 低聚物具有酯键并由反应混合物制备，该反应混合物包含至少一种官能度大于3的多元醇，并且选自季戊四醇，季戊四醇的低分子量聚合物，甘油，甘油的低分子量聚合物和混合物 其中。 与低聚物接触后，聚酯结晶。 改性聚酯材料具有改善的性能，如亲水性和/或粘结剂。

    Surface-modified fibrous material as a filtration medium
    9.
    发明授权
    Surface-modified fibrous material as a filtration medium 失效
    表面改性纤维材料作为过滤介质

    公开(公告)号：US5618622A

    公开(公告)日：1997-04-08

    申请号：US497676

    申请日：1995-06-30

    Applicant: Gunilla E. Gillberg-Laforce ,  Leonid A. Turkevich ,  Kristi L. Kiick-Fischer

    Inventor： Gunilla E. Gillberg-Laforce ,  Leonid A. Turkevich ,  Kristi L. Kiick-Fischer

    IPC: B01D39/16 ,  D06M23/00 ,  D02G3/00

    CPC classification number: D06M23/00 ,  B01D39/1623 ,  Y10T428/249921 ,  Y10T428/29 ,  Y10T428/2933 ,  Y10T442/2861

    Abstract: A surface-modified fibrous material which includes hydrocarbon polymer fibers having cationic or anionic groups on the surfaces thereof and coated with a polyelectrolyte having a net charge opposite to that of the cationic or anionic groups on the surfaces of the fibers. The hydrocarbon polymer may be, by way of illustration, a polyolefin, such as polyethylene or polypropylene. The cationic or anionic groups may be carboxylic acid, sulfonic acid groups, or quaternary ammonium groups. Examples of polyelectrolytes include chitosan, poly(methacryloxyethyltrimethylammonium bromide), poly(acrylic acid), and poly(styrene sulfonate). Also disclosed is a method of making the surface-modified fibrous material. The surface-modified fibrous material may be used as a filtration medium for liquids.

    Abstract translation: 表面改性的纤维材料，其包括在其表面上具有阳离子或阴离子基团的烃聚合物纤维，并且涂覆有具有与纤维表面上的阳离子或阴离子基团的净电荷相反的净电荷的聚电解质。 作为说明，烃聚合物可以是聚烯烃，例如聚乙烯或聚丙烯。 阳离子或阴离子基团可以是羧酸，磺酸基团或季铵基团。 聚电解质的实例包括壳聚糖，聚（甲基丙烯酰氧基乙基三甲基溴化铵），聚（丙烯酸）和聚（苯乙烯磺酸盐）。 还公开了制造表面改性纤维材料的方法。 表面改性的纤维材料可以用作液体的过滤介质。

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