公开(公告)号：US20020122939A1

公开(公告)日：2002-09-05

申请号：US10053068

申请日：2002-01-18

申请人： Kimberly-Clark Worldwide, Inc.

发明人： Ning Wei ,  Robert John Lyng ,  Monica Graciela Varriale

IPC分类号： B32B027/00

CPC分类号： D06M15/59 ,  B01D39/1623 ,  B01D2239/0428 ,  B01D2239/0492 ,  D06M15/333 ,  D06M15/55 ,  D06M15/61 ,  D06M23/10 ,  Y10T428/249921 ,  Y10T428/29 ,  Y10T428/2929 ,  Y10T428/2933 ,  Y10T428/2967

摘要： A hydrophobic polymer fiber having a cationically charged coating thereon, in which the coating includes a functionalized cationic polymer, such as an epichlorohydrin-functionalized polyamine or an epichlorohydrin-functionalized polyamido-amine, which has been crosslinked by heat. The present invention also provides a fibrous filter which includes hydrophobic polymer fibers having the foregoing cationically charged coating thereon. The present invention further provides a method of preparing a fibrous filter. The method involves providing a fibrous filter comprised of hydrophobic polymer fibers; treating the fibrous filter with an aqueous solution of a functionalized cationic polymer crosslinkable by heat under conditions sufficient to substantially coat the fibers with the functionalized cationic polymer, wherein the solution includes the functionalized cationic polymer, a poly(vinyl alcohol), a polar solvent for the poly(vinyl alcohol), and water; and treating the resulting coated fibrous filter with heat at a temperature and for a time sufficient to crosslink the functionalized cationic polymer present on the hydrophobic polymer fibers. The present invention additionally provides a method of preparing a fibrous filter. The method includes providing a fibrous filter comprised of hydrophobic polymer fibers; passing a solution of a functionalized cationic polymer crosslinkable by heat through the fibrous filter under conditions sufficient to substantially coat the fibers with the functionalized cationic polymer, wherein the solution includes the functionalized cationic polymer, a poly(vinyl alcohol), and water; and treating the resulting coated fibrous filter with heat at a temperature and for a time sufficient to crosslink the functionalized cationic polymer present on the hydrophobic polymer fibers.

摘要翻译： 一种其上具有阳离子电荷涂层的疏水性聚合物纤维，其中涂层包括官能化的阳离子聚合物，例如经过热交联的表氯醇官能化的多胺或表氯醇官能化的聚酰胺胺。 本发明还提供一种纤维过滤器，其包括其上具有上述阳离子电荷涂层的疏水性聚合物纤维。 本发明还提供一种制备纤维过滤器的方法。 该方法包括提供由疏水性聚合物纤维组成的纤维过滤器; 在足以使所述官能化阳离子聚合物基本上涂覆所述纤维的条件下通过热可交联的官能化阳离子聚合物的水溶液处理所述纤维过滤器，其中所述溶液包括所述官能化阳离子聚合物，聚（乙烯醇），极性溶剂 聚（乙烯醇）和水; 并在足以使存在于疏水性聚合物纤维上的官能化阳离子聚合物交联的温度和时间下用热处理所得到的涂覆的纤维过滤器。 本发明另外提供了制备纤维过滤器的方法。 该方法包括提供由疏水聚合物纤维组成的纤维过滤器; 使官能化阳离子聚合物的溶液通过纤维过滤器在足以基本上用官能化阳离子聚合物涂覆纤维的条件下进行交联，其中该溶液包括官能化阳离子聚合物，聚（乙烯醇）和水; 并在足以使存在于疏水性聚合物纤维上的官能化阳离子聚合物交联的温度和时间下用热处理所得到的涂覆的纤维过滤器。