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    Magnetic discs having metal support and a non-magnetic layer
    3.
    发明授权
    Magnetic discs having metal support and a non-magnetic layer 失效
    具有金属支撑和非磁性层的磁盘

    公开(公告)号：US3959553A

    公开(公告)日：1976-05-25

    申请号：US414331

    申请日：1973-11-09

    申请人： Job Werner Hartmann ,  Werner Ostertag ,  Rudolf Sand ,  Dieter Schaefer ,  Hans Joerg Hartmann

    发明人： Job Werner Hartmann ,  Werner Ostertag ,  Rudolf Sand ,  Dieter Schaefer ,  Hans Joerg Hartmann

    IPC分类号： C08L63/00 ,  G11B5/708 ,  G11B5/73 ,  G11B5/733 ,  H01F10/00

    CPC分类号： G11B5/7085 ,  Y10S428/90 ,  Y10T428/257 ,  Y10T428/2982 ,  Y10T428/31529

    摘要： The invention relates to magnetic discs in which first a non-magnetic intermediate layer and then the magnetic coating are applied by conventional methods to an aluminum disc. The intermediate layer applied to the non-magnetic metallic carrier disc is a hard non-magnetic coating which can be polished and which consists of a dispersion of a pulverulent mixture of finely divided inorganic non-magnetic pigments having a Mohs' hardness of at least 7 in a binder which can be cured and which provides firm cohesion of the pigment particles and good adhesion thereof to the non-magnetic base disc, the pigment mixture containing at least 3 percent by weight of corundum powder having a particle size of from about 1 to 20.mu.u. Magnetic discs with very thin magnetic coatings which possess good magnetic and mechanical properties and whose thickness varies only minimally are thus produced in a simple manner.

    摘要翻译： 本发明涉及磁盘，其中首先将非磁性中间层然后通过常规方法将磁性涂层施加到铝盘上。 施加到非磁性金属载体盘的中间层是可以抛光的硬质非磁性涂层，其由具有莫氏硬度至少为7的细分的无机非磁性颜料的粉末混合物的分散体组成 在可固化的粘合剂中，其提供颜料颗粒的牢固粘合和对非磁性基盘的良好粘附性，所述颜料混合物含有至少3重量％的刚玉粉末，其具有约1至 20亩 因此，以简单的方式制造具有良好磁性和机械性能并且其厚度仅最小程度变化的非常薄的磁性涂层的磁盘。

    Magnetic discs having a multi-component binder
    4.
    发明授权
    Magnetic discs having a multi-component binder 失效
    具有多组分粘合剂的磁盘

    公开(公告)号：US3955037A

    公开(公告)日：1976-05-04

    申请号：US521459

    申请日：1974-11-06

    申请人： Matthias Marx ,  Job-Werner Hartmann ,  Werner Ostertag

    发明人： Matthias Marx ,  Job-Werner Hartmann ,  Werner Ostertag

    IPC分类号： C09D5/23 ,  G11B5/702 ,  H01F10/02

    CPC分类号： G11B5/7022 ,  G11B5/7023 ,  Y10S428/90 ,  Y10T428/31529 ,  Y10T428/31688

    摘要： A process for the manufacture of improved magnetic discs by applying a thin layer of a fluid dispersion of magnetic pigments and optional non-magnetic pigments in a binder mixture to a non-magnetic rigid base and curing the magnetic layer which has been applied. The binder consists essentially of from 60 to 90 percent by weight of a solid curable polycondensate of 2,2-bis-(4-hydroxyphenyl)-propane and epichlorohydrin having an epoxide equivalent weight of approximately 400 to 5,000, from 5 to 25 percent by weight of a curable allyloxybenzene-formaldehyde condensate of the resol type with free or alcohol-etherified methylol groups and a molecular weight of less thah 1,000, and from 5 to 30 percent by weight of a curable melamine-formaldehyde condensate with more than two alcohol-etherified methylol groups and a molecular weight of less than 3,000, from 10 to 35 percent by weight of the above epoxy resin being replaced by a reaction product of an epoxy group-containing polycondensate of 2,2-bis-(4-hydroxyphenyl)-propane and epichlorohydrin with the N-methylolamide of a copolymerizable olefinically unsaturated carboxylic acid of 3 to 5 carbon atoms. The magnetic layers thus produced adhere firmly to the base, can be readily ground and polished and are particularly resistant to wear when the magnetic discs are in use.

    摘要翻译： 通过将粘合剂混合物中的磁性颜料和任选的非磁性颜料的流体分散体的薄层施加到非磁性刚性基底并固化已经施加的磁性层来制造改进的磁盘的方法。 粘合剂基本上由60至90重量％的2,2-双 - （4-羟基苯基） - 丙烷和表氯醇的固体可固化缩聚物，其环氧当量为约400至5,000，按重量计为5至25％ 具有游离或醇醚化的羟甲基的分解型甲醛型可固化的烯丙氧基苯 - 甲醛缩合物的重量和分子量小于1,000的可固化的烯丙氧基苯 - 甲醛缩合物和5至30重量％的可固化的三聚氰胺 - 甲醛缩合物与多于两个的醇 - 醚化的羟甲基和小于3,000的分子量，10至35重量％的上述环氧树脂被2,2-双（4-羟基苯基） - （4-羟基苯基） - 环氧基的环氧基缩聚物的反应产物代替， 丙烷和表氯醇与3-羟甲基酰胺的可共聚的烯属不饱和羧酸的3至5个碳原子。 由此产生的磁性层牢固地粘附到基底上，可容易地研磨和抛光，并且当使用磁盘时特别耐磨损。

    Carbon-containing luster pigments
    8.
    发明授权
    Carbon-containing luster pigments 失效
    含碳光泽颜料

    公开(公告)号：US5501731A

    公开(公告)日：1996-03-26

    申请号：US266384

    申请日：1994-06-27

    申请人： Raimund Schmid ,  Norbert Mronga ,  Werner Ostertag ,  Helmut Schmidt

    发明人： Raimund Schmid ,  Norbert Mronga ,  Werner Ostertag ,  Helmut Schmidt

    IPC分类号： C09C1/28 ,  B44F1/12 ,  C09C1/00 ,  C04B14/20

    CPC分类号： C09C1/0015 ,  C01P2004/20 ,  C01P2004/80 ,  C09C2200/102

    摘要： Luster pigments comprising coated, plateletlike, silicatic substrates wherein the coating comprises a layer consisting essentially of carbon and aluminum oxide, chromium oxide, cerium oxide, zirconium oxide, antimony oxide or mixtures thereof, are obtainable by applying carbon-containing compounds of the metals aluminum, chromium, cerium, zirconium, antimony or mixtures thereof with or without further carbon-containing compounds of the molecular formula (CH.sub.2 O).sub.n, where n is from 1 to 6 for one monomeric unit, to the substrate particles and then thermally decomposing the carbon-containing compounds on the surface of the substrate particles under oxygen-excluding conditions.

    摘要翻译： 包含涂覆的，片状的，硅基底物的光泽颜料，其中涂层包含基本上由碳和氧化铝，氧化铬，氧化铈，氧化锆，氧化锑或其混合物组成的层，可通过将含金属的化合物铝 ，铬，铈，锆，锑或其混合物与另外含有分子式（CH 2 O）n的含碳化合物（其中n为1个单体单元为1至6个）与基质颗粒反应，然后热分解碳 在氧排除条件下，在基体颗粒的表面上含有化合物。