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    Magnetic recording medium
    1.
    发明公开
    Magnetic recording medium 失效
    磁记录介质

    公开(公告)号：EP0195675A2

    公开(公告)日：1986-09-24

    申请号：EP86302059.0

    申请日：1986-03-20

    申请人： Kao Corporation

    发明人： Kanai, Hiroyuki ,  Imamura, Tetsuya ,  Takeuchi, Takashi ,  Suzue, Shigetoshi

    IPC分类号： G11B5/71

    CPC分类号： G11B5/71 ,  Y10S428/90 ,  Y10T428/31609 ,  Y10T428/31935 ,  Y10T428/31942 ,  Y10T428/31971

    摘要： A magnetic recording medium comprises a magnetic powder, a resin binder and an ester compound of the formula (1):
    in which R, and R 2 are each C 1 to C 25 straight-chain or branched-chain saturated alkyl and R 3 is an unsaturated hydrocarbon group or a straight-chain or branched-chain saturated alkyl and has 7 to 27 carbon atoms, provided that the total number of carbon atoms of R, and R 2 ranges from C 18 to C 32 when R 3 is the unsaturated hydrocarbon group and that ranges from C 22 to C 32 when R 3 is the saturated alkyl. It is improved in lubricity and durability.

    摘要翻译： 磁记录介质包括磁粉，树脂粘合剂和式（1）的酯化合物：其中R 1和R 2各自为C 1至C 25的直​​链或支链饱和烷基，R 3为不饱和烃基 或直链或支链饱和烷基，并且具有7至27个碳原子，条件是当R 3为不饱和烃基时，R 1和R 2的碳原子总数为C 18至C 32，并且范围为C 22至C 22 当R3是饱和烷基时为C32。 它的润滑性和耐用性有所提高。

    Magnetic recording medium
    2.
    发明公开
    Magnetic recording medium 失效
    磁记录介质

    公开(公告)号：EP0222564A2

    公开(公告)日：1987-05-20

    申请号：EP86308510.6

    申请日：1986-10-31

    申请人： Kao Corporation

    发明人： Abe, Chiaki ,  Kanai, Hiroyuki ,  Ishikawa, Akira ,  Takeuchi, Takashi ,  Suzue, Shigetoshi ,  Minami, Takahide

    IPC分类号： G11B5/71 ,  G11B5/702

    CPC分类号： G11B5/71 ,  G11B5/702 ,  G11B5/7305 ,  Y10S428/90 ,  Y10T428/2991 ,  Y10T428/31609 ,  Y10T428/31935 ,  Y10T428/31942 ,  Y10T428/31971

    摘要： A magnetic recording medium comprises a support and a magnetic layer, coated on said support, comprising magnetic powder, a binder, (I) an ester compound having the formula:
    in which R1 and R2 are each a saturated alkyl group having 1 to 25 carbon atoms, branched or straight, the total carbon number of R1 and R2 being from 22 to 34, and R3 is a saturated or unsaturated alkyl group having 7 to 29 carbon atoms, branched or straight, and (II) an ester compound having the formula:
    R₄- ―O―R₅ ..... ( II )
    in which R4 is an aliphatic hydrocarbon group having 1 to 29 carbon atoms, straight or brached, and R5 is an aliphatic hydrocarbon group having 1 to 23 carbon atoms, straight or branched, or a straight aliphatic hydrocarbon group having 24 to 36 carbon atoms, the total carbon number of R4 and R5 being 15 to 65.

    摘要翻译： 一种磁记录介质，包括载体和磁性层，涂覆在所述载体上，包括磁性粉末，粘合剂，（I）具有下式的酯化合物：其中R1和R2各自是具有1至25个碳的饱和烷基 原子，支链或直链，R1和R2的总碳数为22-34，R3为具有7-29个碳原子的支链或直链的饱和或不饱和烷基，和（II）具有式 ：其中R4是具有1-29个碳原子的直链或支链的脂族烃基，R5是具有1-23个碳原子的脂族烃基，R 4是-O-R 5 .....（II） 支链或具有24-36个碳原子的直链脂族烃基，R4和R5的总碳数为15-65。