Magnetic recording media
    9.
    发明授权
    Magnetic recording media 失效
    磁记录媒体

    公开(公告)号:US4091143A

    公开(公告)日:1978-05-23

    申请号:US624580

    申请日:1975-10-22

    IPC分类号: G11B5/702 G11B5/706 H01F10/02

    摘要: Magnetic recording media, the magnetic coating of which consists of a dispersion of elongated ferromagnetic chromium dioxide particles in an organic binder, the dispersions exhibiting particularly good storage stability. This is achieved by admixing 0.5 to 6% by weight, based on the amount of chromium dioxide pigment, of the zinc salt of an aliphatic carboxylic acid of 8 to 18 carbon atoms, during the manufacture of the chromium dioxide dispersions. Chromium dioxide dispersions with good storage stability and a high degree of orientation of the elongated magnetic particles in the magnetic coating are thus obtained in a simple manner.

    摘要翻译: 磁记录介质,其磁性涂层由细长的铁磁性二氧化铬颗粒在有机粘合剂中的分散体组成,分散体表现出特别好的储存稳定性。 这是通过在二氧化铬分散体的制造过程中将基于二氧化铬颜料的含量为0.5至6重量%的8至18个碳原子的脂族羧酸的锌盐混合而实现的。 因此,以简单的方式获得具有良好的储存稳定性和磁性涂层中细长磁性颗粒的高取向度的二氧化铬分散体。