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    • 16. 发明授权
    • Magnetic recording medium
    • 磁记录介质
    • US5869186A
    • 1999-02-09
    • US865830
    • 1997-05-30
    • Kazuyuki UsukiKunihiko SanoToshio Ishida
    • Kazuyuki UsukiKunihiko SanoToshio Ishida
    • G11B5/66C09D5/23C09D7/12G11B5/72G11B5/725G11B5/735G11B5/71
    • G11B5/725Y10S428/90Y10T428/3154Y10T428/31678
    • A magnetic recording medium excellent in running properties, durability and shelf stability. The magnetic recording medium has a magnetic layer of a ferromagnetic metal thin film formed over at least one surface of a non-magnetic base, with or without an inorganic protective layer formed on the magnetic layer. A surface layer consisting essentially of a salt of a phosphoric alkyl ester compound with an alkylamine compound, which is represented by the following formula (1) or (2), and a fluorine-containing carboxylic acid ester compound is provided on the magnetic layer or on the inorganic protective layer: ##STR1## where: R.sup.1 and R.sup.2, which may be the same or different from each other, are a hydrocarbon or fluorinated hydrocarbon group having from 2 to 26 carbon atoms; R.sup.A, R.sup.B, R.sup.C and R.sup.D are hydrogen, or a hydrocarbon or fluorinated hydrocarbon group having not more than 26 carbon atoms; and m is 1 or 2.
    • 一种运行性能,耐用性和货架稳定性优异的磁记录介质。 磁记录介质具有形成在非磁性基底的至少一个表面上的强磁性金属薄膜的磁性层,具有或不具有形成在磁性层上的无机保护层。 由下式(1)或(2)表示的基本上由磷酸烷基酯化合物与烷基胺化合物的盐组成的表面层和含氟羧酸酯化合物提供在磁性层或 (1)其中:R1和R2可以相同或不同,为具有2至26个碳原子的烃基或氟化烃基; RA,RB,RC和RD是氢或具有不超过26个碳原子的烃或氟化烃基; m为1或2。