Modified polymeric material having improved wettability
    2.
    发明授权
    Modified polymeric material having improved wettability 失效
    具有改善的润湿性的改性聚合物材料

    公开(公告)号:US5695829A

    公开(公告)日:1997-12-09

    申请号:US719595

    申请日:1996-09-25

    摘要: Proteins are applied to a polymeric article by contacting the polymeric article with a protein and exposing the contacted polymeric article to a frequency with a sufficient power dissipation for a sufficient period of time. A frequency range for applying proteins to a polymeric article is between about 5 kHz to about 40 kHz with a minimum power dissipated of about 1 watt. As a result, polymeric articles so treated exhibit improved water wettability, proteins may be applied to the polymeric articles very rapidly and more uniformly than by other methods, and polymeric articles having selected zones of wettability may be produced.

    摘要翻译: 通过使聚合物与蛋白质接触并将接触的聚合物物品暴露于具有足够功率耗散的频率足够的时间段,将蛋白质施加到聚合物制品上。 将蛋白质应用于聚合物品的频率范围在约5kHz至约40kHz之间,最小功率消耗约1瓦特。 结果,如此处理的聚合物制品表现出改善的水润湿性,可以比通过其它方法非常快速和更均匀地将蛋白质施加到聚合物制品,并且可以生产具有选定湿润性区域的聚合物制品。

    Wettable article
    3.
    发明授权
    Wettable article 失效
    可湿性文章

    公开(公告)号:US06403858B1

    公开(公告)日:2002-06-11

    申请号:US09275958

    申请日:1999-03-25

    IPC分类号: A61F1315

    摘要: A wettable article consisting of an article with a hydrophobic surface having a coating which includes a surface free energy modifier and a surface-active agent. The hydrophobic surface may include a hydrophobic polymer. The surface free energy modifier has a surface free energy greater than that of the surface of the article, but less than the surface tension of an aqueous liquid to which the wettable coated article may be exposed. The surface free energy modifier desirably is present in an amount sufficient to substantially cover the surface of the article. The surface-active agent is present in an amount effective to lower the surface tension of the liquid to a value which is greater than the surface free energy of the surface of the article and equal to or less than the surface free energy of the surface free energy modifier. The article desirably is a film or a fibrous web, such as a nonwoven web. Methods of preparing the wettable article also are described.

    摘要翻译: 一种可湿性制品,由具有疏水表面的制品组成,该制品具有包含表面自由能改性剂和表面活性剂的涂层。 疏水表面可以包括疏水性聚合物。 表面自由能调节剂的表面自由能大于制品表面的表面自由能,但小于可润湿涂层制品可能暴露于的水性液体的表面张力。 表面自由能调节剂理想地以足以基本上覆盖制品表面的量存在。 表面活性剂的存在量有效地将液体的表面张力降低到大于制品表面的表面自由能的值,并且等于或小于表面自由能的表面自由能 能量调节剂。 该制品理想地是膜或纤维网,例如非织造纤维网。 还描述了制备可湿性制品的方法。

    Coating of a hydrophobic polymer substrate with a nonstoichiometric
polyelectrolyte complex
    6.
    发明授权
    Coating of a hydrophobic polymer substrate with a nonstoichiometric polyelectrolyte complex 失效
    用非化学计量的聚电解质复合物涂覆疏水性聚合物基材

    公开(公告)号:US6060410A

    公开(公告)日:2000-05-09

    申请号:US64243

    申请日:1998-04-22

    摘要: A method of coating the surface of a substrate, such as a film or a fibrous web, which is composed of a hydrophobic polymer. The method involves providing a solution of a first polyelectrolyte having ionizable groups and a solution of a second polyelectrolyte having ionizable groups. The two solutions then are mixed under conditions adapted to result in the formation of a nonstoichiometric polyelectrolyte complex. Finally, the surface of the hydrophobic polymer substrate is contacted with a solution of the complex under conditions sufficient to result in the coating of the surface of the substrate with the complex. The ionizable groups of the second polyelectrolyte have a latent charge opposite the latent charge of the ionizable groups of the first polyelectrolyte. Moreover, the amounts of the first and second polyelectrolytes are selected to give a ratio of the number of ionizable groups in the first polyelectrolyte to the number of ionizable groups in the second polyelectrolyte of at least about 2, and the molecular weight of the first polyelectrolyte is at least about 40,000 daltons and at least about 2 times the molecular weight of the second polyelectrolyte.

    摘要翻译: 涂布由疏水性聚合物构成的基材例如薄膜或纤维网的表面的方法。 该方法包括提供具有可离子化基团的第一聚电解质和具有可离子化基团的第二聚电解质溶液的溶液。 然后将两种溶液在适于导致形成非化学计量的聚电解质络合物的条件下混合。 最后,疏水聚合物基材的表面在足以导致用复合物涂覆基材表面的条件下与络合物的溶液接触。 第二聚电解质的可电离基团具有与第一聚电解质的可离子化基团的潜在电荷相反的潜在电荷。 此外,选择第一和第二聚电解质的量以使第一聚电解质中的可电离基团的数量与第二聚电解质中的可离子化基团的数量的比率至少为约2,第一聚电解质的分子量 是至少约40,000道尔顿和至少约2倍于第二聚电解质的分子量。