MAGNETIC RECORDING MEDIUM
    32.
    发明申请
    MAGNETIC RECORDING MEDIUM 审中-公开
    磁记录介质

    公开(公告)号:US20150248908A1

    公开(公告)日:2015-09-03

    申请号:US14698913

    申请日:2015-04-29

    摘要: An aspect of the present invention relates to a magnetic recording medium comprising a nonmagnetic layer comprising a nonmagnetic powder and a binder and a magnetic layer comprising a ferromagnetic powder and a binder in this order on a nonmagnetic support, wherein the magnetic layer and/or nonmagnetic layer comprises organic acid A and organic acid B below, with an acid strength pKa(A) of organic acid A and an acid strength pKa(B) of organic acid B satisfying a relation of pKa(A)

    摘要翻译: 本发明的一个方面涉及一种在非磁性载体上依次包含非磁性粉末和粘合剂的非磁性层和包含铁磁性粉末和粘合剂的磁性层的磁性记录介质,其中磁性层和/或非磁性材料 层A包含有机酸A和有机酸B,具有酸性强度pKa(A)的有机酸A和有机酸B的酸度pKa(B)满足pKa(A)

    MAGNETIC RECORDING MEDIUM
    34.
    发明申请
    MAGNETIC RECORDING MEDIUM 审中-公开
    磁记录介质

    公开(公告)号:US20140212693A1

    公开(公告)日:2014-07-31

    申请号:US14168740

    申请日:2014-01-30

    发明人: Yasushi HATTORI

    IPC分类号: G11B5/706 G11B5/702

    摘要: The magnetic recording medium includes a magnetic layer containing a ferromagnetic powder and a binder on a nonmagnetic support, wherein the ferromagnetic powder is an ε-iron oxide powder, and the magnetic layer comprises a compound comprising at least one substituent selected from the group consisting of a hydroxyl group and a quaternary ammonium salt group.

    摘要翻译: 磁记录介质包括在非磁性载体上含有铁磁性粉末和粘合剂的磁性层,其中铁磁性粉末是氧化铁粉末,磁性层包含至少一种选自以下的取代基的化合物: 的羟基和季铵盐基团。

    BINDER COMPOSITION FOR MAGNETIC RECORDING MEDIUM AND MAGNETIC RECORDING MEDIUM
    35.
    发明申请
    BINDER COMPOSITION FOR MAGNETIC RECORDING MEDIUM AND MAGNETIC RECORDING MEDIUM 有权
    用于磁记录介质和磁记录介质的粘合剂组合物

    公开(公告)号:US20110244270A1

    公开(公告)日:2011-10-06

    申请号:US13077337

    申请日:2011-03-31

    摘要: An aspect of the present invention relates to a binder composition for a magnetic recording medium, which comprises a vinyl copolymer comprising a structural unit denoted by general formula [1]: wherein, in general formula [1], R1 denotes a hydrogen atom, a halogen atom, or a methyl group, L1 denotes a single bond or a divalent linking group, and Y an alicyclic group; a structural unit denoted by general formula [2]: wherein, in general formula [2], R2 denotes a hydrogen atom, a halogen atom, or a methyl group, L2 denotes a single bond or a divalent linking group, and Z denotes a hydrocarbon group with a carbon number ranging from 8 to 50; and a structural unit denoted by general formula [3]: wherein, in general formula [3], R3 denotes a hydrogen atom, a halogen atom, or a methyl group, and L3 denotes a single bond or a divalent linking group.

    摘要翻译: 本发明的一个方面涉及一种用于磁记录介质的粘合剂组合物,其包含由通式[1]表示的结构单元的乙烯基共聚物:其中,通式[1]中,R 1表示氢原子, 卤原子或甲基,L1表示单键或二价连接基,Y表示脂环族基; 由通式[2]表示的结构单元:其中,通式[2]中,R 2表示氢原子,卤素原子或甲基,L 2表示单键或二价连接基,Z表示 碳数为8至50的烃基; 和由通式[3]表示的结构单元:其中,通式[3]中,R3表示氢原子,卤素原子或甲基,L3表示单键或二价连接基团。

    MAGNETIC RECORDING MEDIUM AND METHOD OF MANUFACTURING THE SAME
    36.
    发明申请
    MAGNETIC RECORDING MEDIUM AND METHOD OF MANUFACTURING THE SAME 有权
    磁记录介质及其制造方法

    公开(公告)号:US20110229741A1

    公开(公告)日:2011-09-22

    申请号:US13051765

    申请日:2011-03-18

    摘要: An aspect of the present invention relates to a magnetic recording medium comprising a nonmagnetic layer containing a nonmagnetic powder and a binder and a magnetic layer containing a ferromagnetic powder and a binder in this order on a nonmagnetic support, wherein the binder of the magnetic layer is a mixture of a vinyl chloride copolymer, polyurethane resin, and polyisocyanate, the polyurethane resin having a glass transition temperature ranging from 90 to 130° C. and a storage elastic modulus at 80° C. ranging from 2.5 to 5.0 GPa, the nonmagnetic layer is a radiation-cured layer formed by curing with radiation a radiation-curable composition comprising a nonmagnetic powder and a binder component, the binder component comprising a radiation-curable vinyl chloride copolymer and a radiation-curable polyurethane resin, and the radiation-curable vinyl chloride copolymer and radiation-curable polyurethane resin both have glass transition temperatures ranging from 30 to 100° C.

    摘要翻译: 本发明的一个方面涉及一种在非磁性载体上依次包含含有非磁性粉末和粘合剂的非磁性层和含有铁磁性粉末和粘合剂的磁性层的磁记录介质,其中磁性层的粘结剂为 氯乙烯共聚物,聚氨酯树脂和多异氰酸酯的混合物,所述聚氨酯树脂的玻璃化转变温度为90〜130℃,80℃下的储能弹性模量为2.5〜5.0GPa,非磁性层 是通过用辐射固化形成的辐射固化层,所述辐射固化组合物包含非磁性粉末和粘合剂组分,所述粘合剂组分包含可辐射固化的氯乙烯共聚物和可辐射固化的聚氨酯树脂,以及所述可辐射固化的乙烯基 氯化物共聚物和可辐射固化的聚氨酯树脂都具有30至100℃的玻璃化转变温度。

    MAGNETIC RECORDING MEDIUM, BINDER FOR MAGNETIC RECORDING MEDIUM, AND POLYURETHANE RESIN
    37.
    发明申请
    MAGNETIC RECORDING MEDIUM, BINDER FOR MAGNETIC RECORDING MEDIUM, AND POLYURETHANE RESIN 审中-公开
    磁记录介质,磁记录介质粘合剂和聚氨酯树脂

    公开(公告)号:US20100055505A1

    公开(公告)日:2010-03-04

    申请号:US12548989

    申请日:2009-08-27

    IPC分类号: G11B5/733 G11B5/702 C08G18/00

    摘要: An aspect of the present invention relates to a magnetic recording medium comprising a magnetic layer comprising a ferromagnetic power and a binder on a nonmagnetic support, wherein, the binder comprises a constituent component in the form of a polyurethane resin obtained from starting materials in the form of a polyisocyanate and a polyol denoted by general formula (I): wherein, in general formula (I), Z1 denotes an atom group forming a lactone ring with two adjacent carbon atoms.

    摘要翻译: 本发明的一个方面涉及一种磁记录介质,其包括在非磁性载体上包含铁磁性磁性层和粘合剂的磁性层,其中,所述粘合剂包含由以下形式的原料获得的聚氨酯树脂形式的构成组分 的多异氰酸酯和由通式(I)表示的多元醇:其中,在通式(I)中,Z1表示形成具有两个相邻碳原子的内酯环的原子团。

    Magnetic recording medium
    38.
    发明申请
    Magnetic recording medium 有权
    磁记录介质

    公开(公告)号:US20070065684A1

    公开(公告)日:2007-03-22

    申请号:US11520621

    申请日:2006-09-14

    IPC分类号: G11B5/702

    摘要: A magnetic recording medium is provided that comprises a non-magnetic support and at least one magnetic layer above the support, the magnetic layer comprising a ferromagnetic powder dispersed in a binder, and the binder comprising a polyurethane resin having a weight-average molecular weight of 200,000 to 400,000. There is also provided a magnetic recording medium that comprises a non-magnetic support, a non-magnetic layer above the support, the non-magnetic layer comprising a non-magnetic powder dispersed in a binder, and at least one magnetic layer above the non-magnetic layer, the magnetic layer comprising a ferromagnetic powder dispersed in a binder and the binder of the magnetic layer and/or the non-magnetic layer comprising a polyurethane resin having a weight-average molecular weight of 200,000 to 400,000.

    摘要翻译: 提供一种磁记录介质,其包括非磁性载体和在载体上方的至少一个磁性层,所述磁性层包含分散在粘合剂中的铁磁性粉末,所述粘合剂包含重均分子量为 20万到40万。 还提供了一种磁记录介质,其包括非磁性载体,载体上方的非磁性层,非磁性层包含分散在粘结剂中的非磁性粉末,以及至少一个磁性层, 磁性层,磁性层包含分散在粘合剂中的铁磁粉末和磁性层和/或非磁性层的粘合剂,其包含重均分子量为200,000至400,000的聚氨酯树脂。

    Magnetic recording medium
    39.
    发明申请
    Magnetic recording medium 失效
    磁记录介质

    公开(公告)号:US20050238925A1

    公开(公告)日:2005-10-27

    申请号:US11109653

    申请日:2005-04-20

    摘要: A magnetic recording medium is provided that includes a non-magnetic support, a radiation-cured layer cured by exposing a layer containing a radiation curing compound to radiation, and a magnetic layer comprising a ferromagnetic powder dispersed in a binder. The radiation-cured layer and the magnetic layer are provided in that order above the non-magnetic support. The radiation curing compound has a C2 to C18 alkyl group, a C6 to C10 cyclic structure, and two or more radiation curing functional groups per molecule.

    摘要翻译: 提供了一种磁记录介质,其包括非磁性载体,通过将含有辐射固化化合物的层暴露于辐射而固化的辐射固化层和包含分散在粘合剂中的铁磁性粉末的磁性层。 辐射固化层和磁性层以非磁性载体上方的顺序设置。 辐射固化化合物具有C2至C18烷基,C6至C10环状结构和每个分子两个或更多个辐射固化官能团。