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10 条记录 (耗时 0.035 秒)

    Method for creation of biomimetic surfaces
    5.
    发明授权
    Method for creation of biomimetic surfaces 失效
    创造仿生表面的方法

    公开(公告)号：US5939208A

    公开(公告)日：1999-08-17

    申请号：US966343

    申请日：1997-11-07

    申请人： Patrick Stoy

    发明人： Patrick Stoy

    IPC分类号： A61L29/08 ,  A61L29/16 ,  A61L31/08 ,  A61L31/16 ,  C08J7/12 ,  B32B27/30 ,  B05D3/10

    CPC分类号： C08J7/12 ,  A61L29/08 ,  A61L29/16 ,  A61L31/08 ,  A61L31/16 ,  A61L2300/208 ,  A61L2300/404 ,  A61L2400/18 ,  C08J2333/04 ,  Y10T428/31573 ,  Y10T428/31583 ,  Y10T428/31855

    摘要： In the present invention method, the surface of articles made of acrylic polymers and methacrylic polymers are converted into thin biomimetic layers by using the process involving at least the following two steps:(a) The polymer surface is contacted, in the presence of water and for a predetermined reaction time necessary to form a continuous surface layer thinner than about 500 microns, with a solution containing one or more tetraalkylammonium hydroxides of the general formula:R.sub.1 R.sub.2 R.sub.3 R.sub.4 N.sup.+ OH.sup.-where R.sub.1, R.sub.2, R.sub.3, R.sub.4 are the alkyl substituents, in which the sum of the number of carbon atoms is equal to or larger than 8 but smaller than 45; and,(b) The article is removed from the aqueous reaction solution and excess of tetraalkylammonium hydroxide is removed from the polymer surface by washing the polymer with a liquid miscible with the tetraalkylammonium hydroxide.

    摘要翻译： 在本发明的方法中，由丙烯酸类聚合物和甲基丙烯酸类聚合物制成的制品的表面通过使用涉及至少以下两个步骤的方法转化成薄的仿生层：（a）聚合物表面在水和 对于形成薄于约500微米的连续表面层所需的预定反应时间，用含有一种或多种通式为R 1 R 2 R 3 R 4 N + OH的四烷基氢氧化铵的溶液，其中R 1，R 2，R 3，R 4为烷基取代基， 其中碳原子数之和等于或大于8但小于45; 和（b）通过用与四烷基氢氧化铵混溶的液体洗涤聚合物，从反应溶液中除去物品并从聚合物表面除去过量的四烷基氢氧化铵。

    Thin film hydrophilic coatings
    8.
    发明授权
    Thin film hydrophilic coatings 失效
    薄膜亲水涂层

    公开(公告)号：US5688855A

    公开(公告)日：1997-11-18

    申请号：US434573

    申请日：1995-05-01

    申请人： Vladimir A. Stoy ,  Gerald A. Gontarz, Jr. ,  Patrick Stoy

    发明人： Vladimir A. Stoy ,  Gerald A. Gontarz, Jr. ,  Patrick Stoy

    IPC分类号： A61L29/08 ,  A61L31/10 ,  C08G18/48 ,  C08G18/66 ,  C08G18/78 ,  C08G18/80 ,  C09D5/00 ,  C09D121/02 ,  C09D175/04 ,  C08K5/15 ,  C08K5/02 ,  C08K5/06 ,  C08K5/07

    CPC分类号： C09D121/02 ,  A61L29/085 ,  A61L31/10 ,  C08G18/4833 ,  C08G18/6674 ,  C08G18/7825 ,  C08G18/8038 ,  C09D175/04 ,  C09D5/00 ,  C08G2210/00

    摘要： A hydrophilic coating composition used to impart increased lubricity and wettability to the surface of a hydrophobic substrate which is comprised of three essential components: 1) Hydrogel-forming polymer component A 2) Water-soluble polymer component B 3) Common solvent C for the components A and B The water-insoluble, hydrogel-forming component A consists of a segmented copolymer with long, hydrophilic terminal blocks and the essentially hydrophobic central section. The two polymer components A and B have a limited miscibility in the absence of a common solvent C. Therefore, their blend tends to separate spontaneously into two polymer phases. The phase separation takes place during the solvent evaporation or extraction. A gradient of hydrophilicity and swelling within the coating layer is thus spontaneously created achieving a good adhesion to the substrate and high surface hydrophilicity at the same time.

    摘要翻译： 一种亲水性涂料组合物，其用于赋予疏水性基材表面增加的润滑性和润湿性，该疏水性基材由三种基本组分组成：1）水凝胶形成聚合物组分A 2）水溶性聚合物组分B 3）组分的常用溶剂C A和B水不溶性水凝胶形成组分A由具有长亲水性末端嵌段和基本上疏水性中心部分的分段共聚物组成。 两种聚合物组分A和B在不存在共同溶剂C的情况下具有有限的混溶性。因此，它们的共混物倾向于自发分离成两个聚合物相。 在溶剂蒸发或萃取过程中发生相分离。 因此，自发产生涂层内的亲水性和溶胀的梯度，同时实现对基材的良好的粘合性和高的表面亲水性。