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    Magnetic recording media
    2.
    发明授权
    Magnetic recording media 失效
    磁记录媒体

    公开(公告)号：US4666781A

    公开(公告)日：1987-05-19

    申请号：US759298

    申请日：1985-07-26

    申请人： August Lehner ,  Guenter Heil ,  Jenoe Kovacs ,  Werner Balz ,  Werner Lenz

    发明人： August Lehner ,  Guenter Heil ,  Jenoe Kovacs ,  Werner Balz ,  Werner Lenz

    IPC分类号： C09D5/23 ,  C09D175/04 ,  C09D175/14 ,  G11B5/702

    CPC分类号： G11B5/702 ,  Y10S428/90 ,  Y10T428/31609

    摘要： Magnetic recording media comprising a non-magnetic substrate and a magnetic layer comprising a finely divided magnetic material dispersed in an organic solvent soluble, crosslinkable, essentially linear, thermoplastic polyurethane which possesses acrylate side and terminal groups wherein said polyurethane is prepared by reacting poly- and/or diisocyanates with a mixture of (a) methacrylate - or acrylate - diols having molecular weights of from 146 to 3,000, (b) monoesters of methacrylic or acrylic acid and a diol having a molecular weight of from 116 to 300, and (c) other organic polydiol compounds which have molecular weights of from 400 to 5,000.

    摘要翻译： 包含非磁性基底和磁性层的磁性记录介质包括分散在有机溶剂可溶性，可交联的，基本上线性的热塑性聚氨酯中的细碎磁性材料，其具有丙烯酸酯侧和端基，其中所述聚氨酯通过聚 （a）分子量为146〜3000的（a）甲基丙烯酸酯或丙烯酸酯 - 二醇的混合物的二异氰酸酯，（b）甲基丙烯酸或丙烯酸的单酯和分子量为116〜300的二醇和（c ）分子量为400至5,000的其它有机聚二醇化合物。

    Process of making a magnetic recording media
    5.
    发明授权
    Process of making a magnetic recording media 失效
    制作磁记录媒体的过程

    公开(公告)号：US4310565A

    公开(公告)日：1982-01-12

    申请号：US150181

    申请日：1980-05-15

    申请人： August Lehner ,  Heinrich Hartmann ,  Rudolf Bachmann ,  Albert Kohl ,  Herbert Spoor ,  Karl Mahler ,  Werner Balz

    发明人： August Lehner ,  Heinrich Hartmann ,  Rudolf Bachmann ,  Albert Kohl ,  Herbert Spoor ,  Karl Mahler ,  Werner Balz

    IPC分类号： G11B5/70 ,  C09D5/23 ,  G11B5/702 ,  G11B5/842 ,  B05D5/12

    CPC分类号： G11B5/7021

    摘要： A process for the manufacture of magnetic recording media, comprising a non-magnetic base and, applied thereto, one or more magnetizable layers, consisting of an anisotropic magnetic material finely dispersed in an organic binder, wherein the binder contains at least 40% of an aqueous ionomeric polyurethane dispersion which at 50.degree. C. forms films having a modulus of elasticity of from 50 to 700 N/mm.sup.2 and a DIN No. 53,157 pendulum hardness of from 20 to 110 s, the corresponding values of the modulus and hardness at room temperature being more than 3.5 times higher.

    摘要翻译： 一种用于制造磁记录介质的方法，包括非磁性基底，并施加于其上，由可分散在有机粘合剂中的各向异性磁性材料组成的一个或多个可磁化层，其中所述粘合剂含有至少40％的 水性离聚物聚氨酯分散体，其在50℃下形成弹性模量为50-700N / mm2的薄膜和DIN编号53,157摆锤硬度为20至110秒，相应的室温模量和硬度值 温度高出3.5倍以上。

    Production of magnetic recording media having a backing coating
    7.
    发明授权
    Production of magnetic recording media having a backing coating 失效
    制备具有背衬涂层的磁记录介质

    公开(公告)号：US4534999A

    公开(公告)日：1985-08-13

    申请号：US630182

    申请日：1984-07-12

    申请人： Hermann Roller ,  August Lehner ,  Joachim Hack ,  Werner Grau ,  Werner Balz ,  Reinhold Baur

    发明人： Hermann Roller ,  August Lehner ,  Joachim Hack ,  Werner Grau ,  Werner Balz ,  Reinhold Baur

    IPC分类号： G11B5/842 ,  C09D5/23 ,  C09D7/12 ,  G11B5/70 ,  G11B5/702 ,  G11B5/73 ,  G11B5/735 ,  G11B5/84

    CPC分类号： G11B5/7013 ,  G11B5/7028

    摘要： Magnetic recording media which have a thin backing coating and consist of a non-magnetic flexible base and a magnetic layer which is applied to one side of the base and comprises magnetic material finely dispersed in an organic binder are produced by applying a dispersion of finely divided non-magnetizable conductive and non-conductive solids and conventional additives in a solution of a polymeric binder in an organic solvent to that side of the base which is opposite the magnetic layer by means of a knife-coater, and then drying the layer, a high molecular weight organic compound which acts as a thickener being added to the backing coating dispersion.

    摘要翻译： 具有薄背衬涂层并由非磁性柔性基底和磁性层组成的磁记录介质通过施加细分散的分散体来制备，所述非磁性柔性基底和磁性层被施加到基底的一侧并且包括细分散在有机粘结剂中的磁性材料 不可磁化的导电和非导电固体和常规添加剂在聚合物粘合剂在有机溶剂中的溶液中，通过刮涂机将其与磁性层相对的基底侧面，然后干燥该层 用作增稠剂的高分子量有机化合物加入到背衬涂料分散体中。