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    Magnetic recording medium
    1.
    发明授权
    Magnetic recording medium 失效
    磁记录介质

    公开(公告)号：US4678708A

    公开(公告)日：1987-07-07

    申请号：US807825

    申请日：1985-12-11

    申请人： Shigeru Shimada ,  Masaharu Nishimatsu ,  Hiroyuki Arioka ,  Yuichi Kubota

    发明人： Shigeru Shimada ,  Masaharu Nishimatsu ,  Hiroyuki Arioka ,  Yuichi Kubota

    IPC分类号： C09D5/23 ,  C09D127/04 ,  C09D127/06 ,  C09D175/04 ,  C09D175/14 ,  G11B5/702

    CPC分类号： G11B5/7023 ,  Y10S428/90 ,  Y10T428/265 ,  Y10T428/31786 ,  Y10T428/31797 ,  Y10T428/31935

    摘要： A magnetic recording medium, obtained by preparing a radiation-sensitive curing resin by modification of a copolymer of (A) vinyl chloride, (B) a vinyl carboxylate, (C) an unsaturated carboxylic acid and (D) an unsaturated carboxylic anhydride, containing 50 to 80% by weight of (A) based on the total of (A) and (B), 10 to 30% by weight of (D) based on the total of (C) and (D) and a total of 1 to 5 parts by weight of (C) and (D) based on 100 parts by weight of (A) and (B) and having an average polymerization degree of 100 of 400, and a magnetic powder thereby producing a magnetic paint, applying said magnetic paint to a non-magnetic substrate, and solidifying the resultant coating of paint on said substrate by exposure to radiation.

    摘要翻译： 通过改变（A）氯乙烯，（B）乙烯基羧酸酯，（C）不饱和羧酸和（D）不饱和羧酸酐的共聚物制备辐射敏感固化树脂得到的磁记录介质，其包含 基于（A）和（B）的总和（A）为50〜80重量％，（C）和（D）总计为10〜30重量％（D），总计1 相对于100重量份的（A）和（B），平均聚合度为100的400重量份的（C）和（D）的5重量份，和由此制成磁性涂料的磁性粉末， 将磁性涂料涂覆到非磁性基材上，并通过暴露于辐射使所得基材上的涂料固化。

    Magnetic recording medium
    3.
    发明授权
    Magnetic recording medium 失效
    磁记录介质

    公开(公告)号：US4603081A

    公开(公告)日：1986-07-29

    申请号：US657004

    申请日：1984-10-02

    申请人： Shigeru Shimada ,  Yuichi Kubota ,  Masaharu Nishimatsu

    发明人： Shigeru Shimada ,  Yuichi Kubota ,  Masaharu Nishimatsu

    IPC分类号： C09D5/23 ,  C09D127/04 ,  C09D127/06 ,  C09D175/04 ,  C09D175/14 ,  G11B5/702 ,  G11B5/70

    CPC分类号： G11B5/7023 ,  Y10S428/90 ,  Y10T428/265 ,  Y10T428/31786 ,  Y10T428/31935

    摘要： A magnetic recording medium, produced by preparing a resin solution for magnetic paint containing a mixture of a radiation curable resin modified copolymer of (A) vinyl chloride, (B) a vinyl carboxylate, (C) vinyl alcohol, (D) an unsaturated carboxylic acid and (E) an unsaturated carboxylic anhydride, containing 50 to 90% by weight of (A) based on the total of the amounts of (A), (B) and (C), 0 to 30% by weight of (E) based on the total of the amounts of (D) and (E), and 1 to 5 parts by weight of the total of (D) and (E) based on 100 parts by weight of the total of (A), (B) and (C) and having an average polymerization degree of 100 to 400 and an other radiation curable resin, and a magnetic powder, applying the resultant magnetic paint to a nonmagnetic substrate, and curing the applied layer of paint with radiation.

    摘要翻译： （A）氯乙烯，（B）乙烯基羧酸酯，（C）乙烯醇，（D）不饱和羧酸的可辐射固化树脂改性共聚物的混合物制备磁性涂料树脂溶液制备的磁记录介质 （A），（B）和（C）的总量为50〜90重量％的（E）不饱和羧酸酐，0〜30重量％的（E ）（D）和（E）的总量和（D）和（E）的总量的1〜5重量份相对于（A），（ B）和（C）并且具有100-400的平均聚合度和另一种可辐射固化树脂，以及磁性粉末，将所得磁性涂料施加到非磁性基底上，并用辐射固化涂覆的涂层。

    Magnetic recording medium
    5.
    发明授权
    Magnetic recording medium 失效
    磁记录介质

    公开(公告)号：US4601947A

    公开(公告)日：1986-07-22

    申请号：US657728

    申请日：1984-10-04

    申请人： Shigeru Shimada ,  Yuichi Kubota ,  Masaharu Nishimatsu

    发明人： Shigeru Shimada ,  Yuichi Kubota ,  Masaharu Nishimatsu

    IPC分类号： C09D5/23 ,  C09D127/04 ,  C09D127/06 ,  C09D129/02 ,  C09D129/04 ,  C09D175/04 ,  C09D175/14 ,  G11B5/702 ,  G11B5/70

    CPC分类号： G11B5/7023 ,  G11B5/7026 ,  Y10S428/90 ,  Y10T428/265 ,  Y10T428/31786 ,  Y10T428/31935

    摘要： A magnetic recording medium, produced by preparing a resin solution for magnetic paint having as a main component thereof a copolymer of (A) vinyl chloride, (B) a vinyl carboxylate, (C) an unsaturated carboxylic acid, (D) an unsaturated carboxylic anhydride and (E) vinyl alcohol, containing 50 to 90% by weight of (A) based on the total of the amounts of (A), (B) and (E), 1 to 15% by weight of (E) based on the total of the amounts of (A), (B) and (E), 0 to 30% by weight of (D) based on the total of amounts of (C) and (D), and 1 to 5 parts by weight of the total of (C) and (D) based on 100 parts by weight of the total of (A), (B) and (E) and having an average polymerization degree of 100 to 400, mixing 10 to 80% by weight of said resin solution with 90 to 20% by weight of a radiation curable resin, blending the resultant mixture as a main component with a magnetic powder, applying the resultant magnetic paint to a non-magnetic substrate, and curing the applied layer of paint with radiation.

    摘要翻译： 作为主要成分的（A）氯乙烯，（B）乙烯基羧酸酯，（C）不饱和羧酸，（D）不饱和羧酸等的共聚物的磁性涂料树脂溶液制备的磁记录介质 （A），（B）和（E）的总量为50〜90重量％的（E）乙烯醇，1〜15重量％的（E） （A），（B）和（E）的总量，（C）和（D）的总量的（D）为0〜30重量％，和 （A），（B）和（E）的总计100重量份，平均聚合度为100〜400，将10〜80重量％的（C）和（D） 所述树脂溶液的重量为90〜20重量％的可辐射固化树脂，将得到的混合物作为主要成分与磁性粉末混合，将所得磁性涂料施加到非磁性基材上，并固化涂覆的涂料层 与辐射 上。

    Magnetic recording medium
    7.
    发明授权
    Magnetic recording medium 失效
    磁记录介质

    公开(公告)号：US4559265A

    公开(公告)日：1985-12-17

    申请号：US567953

    申请日：1984-01-04

    申请人： Yuichi Kubota ,  Masaharu Nishimatsu ,  Shigeru Shimada

    发明人： Yuichi Kubota ,  Masaharu Nishimatsu ,  Shigeru Shimada

    IPC分类号： C09D5/23 ,  C09D127/04 ,  C09D127/06 ,  C09D129/00 ,  C09D175/04 ,  C09D175/14 ,  G11B5/702 ,  G11B5/842 ,  G11B5/855 ,  G11B5/70

    CPC分类号： G11B5/7026 ,  G11B5/7023 ,  G11B5/842 ,  G11B5/855 ,  Y10S428/90 ,  Y10T428/265 ,  Y10T428/31935

    摘要： A magnetic recording medium, produced by preparing a resin solution for magnetic paint having as a main component thereof a copolymer of (A) vinyl chloride, (B) a vinyl carboxylate, (C) an unsaturated carboxylic acid and (D) an unsaturated carboxylic anhydride, containing 50 to 80% by weight of (A) based on the total of the amounts of (A) and (B), 60 to 90% by weight of (D) based on the total of the amounts of (C) and (D), and 1 to 5 parts by weight of the total of (C) and (D) based on 100 parts by weight of the total of (A) and (B) and having an average polymerization degree of 100 to 400, mixing 10 to 80% by weight of said resin solution weigh 90 to 20% by weight of a radiation-sensitive curing resin, blending the resultant mixture as a main component with a magnetic powder, applying the resultant magnetic paint to a non-magnetic substrate, and solidifying the applied layer of paint with radiation.

    摘要翻译： （A）氯乙烯，（B）羧酸乙烯酯，（C）不饱和羧酸和（D）不饱和羧酸的共聚物的主要成分为磁性涂料树脂溶液制备的磁记录介质 酸酐，基于（A）和（B）的总量的（A）含有50〜80重量％的（A），（C）的总量的60〜90重量％的（D） 和（D），和（D）的总量相对于（A）和（B）的总计100重量份，（C）和（D）的总量为1〜5重量份，平均聚合度为100〜 将10〜80重量％的所述树脂溶液重量为90〜20重量％的辐射敏感性固化树脂，将得到的混合物作为主要成分与磁性粉末混合，将得到的磁性涂料施加到非磁性 底物，并用辐射固化涂料层。

    Magnetic recording medium
    8.
    发明授权
    Magnetic recording medium 失效
    磁记录介质

    公开(公告)号：US4526837A

    公开(公告)日：1985-07-02

    申请号：US375261

    申请日：1982-04-23

    申请人： Akira Ohtsuki ,  Ryozo Konno ,  Makio Sugai ,  Masaharu Nishimatsu ,  Yuichi Kubota ,  Kazushi Tanaka ,  Osamu Shinoura

    发明人： Akira Ohtsuki ,  Ryozo Konno ,  Makio Sugai ,  Masaharu Nishimatsu ,  Yuichi Kubota ,  Kazushi Tanaka ,  Osamu Shinoura

    IPC分类号： G11B5/702 ,  C08F2/00 ,  C08F2/54 ,  C09D5/23 ,  G11B5/70 ,  G11B5/708

    CPC分类号： G11B5/7013 ,  Y10S428/90 ,  Y10T428/31609 ,  Y10T428/31935

    摘要： This invention provides a magnetic recording medium with excellent electromagnetic characteristics and running durability. According to the invention, a magnetic powder is kneaded with a cross-linkable or polymerizable resin binder, together with a phosphoric ester having a polymerizable, unsaturated double bond or bonds, the resulting coating material is applied to a substrate, and then the coating is cross-linked or polymerized. The addition of the phosphoric ester in place of an ordinary dispersing agent improves the mechanical properties of the magnetic coating and the durability and running quality of the magnetic recording medium.

    摘要翻译： PCT No.PCT / JP81 / 00204 Sec。 一九八二年四月二十三日 102（e）日期1982年4月23日PCT提交1981年8月28日PCT公布。 出版物WO82 / 00914 1982年3月18日。本发明提供具有优异的电磁特性和运行耐久性的磁记录介质。 根据本发明，将磁性粉末与可交联或可聚合的树脂粘合剂与具有可聚合的不饱和双键或键合的磷酸酯一起捏合，将所得的涂料施加到基材上，然后将涂层 交联或聚合。 添加磷酸酯代替普通分散剂可改善磁性涂层的机械性能和磁记录介质的耐久性和运行质量。

    Magnetic recording medium
    9.
    发明授权
    Magnetic recording medium 失效
    磁记录介质

    公开(公告)号：US4511629A

    公开(公告)日：1985-04-16

    申请号：US463419

    申请日：1983-02-03

    申请人： Ryozo Konno ,  Makio Sugai ,  Yuichi Kubota ,  Masaharu Nishimatsu ,  Yukihiro Isobe ,  Kazushi Tanaka ,  Osamu Shinoura

    发明人： Ryozo Konno ,  Makio Sugai ,  Yuichi Kubota ,  Masaharu Nishimatsu ,  Yukihiro Isobe ,  Kazushi Tanaka ,  Osamu Shinoura

    IPC分类号： C09D5/23 ,  G11B5/738 ,  H01F10/00 ,  B05D5/12

    CPC分类号： G11B5/738 ,  Y10S428/90 ,  Y10T428/31935

    摘要： In a magnetic recording medium made by applying a non-magnetic undercoat and a magnetic top coat on a base, the undercoat comprises a radiation-curable coating material which contains a compound with a molecular weight of not less than 400, having one type of double bond selected from among acrylic, allylic, and maleic double bonds, the undercoat being formed by exposure to radiation. Specifically, the undercoating material contains at least two types of compounds selected from (A) those having a molecular weight of over 5000, preferably over 8000 and having two or more double bonds selected as above, (B) those having a molecular weight of 400 or more but less than 500, preferably in the range of 600 to 3000, and two or more double bonds selected as above, and (C) those having a molecular weight of less than 400 and one or more double bonds selected from among acrylic, allylic, maleic, and styrenic double bonds. At least two types of the compounds are used in a mixing ratio of 0-90 wt % (A), 0-80 wt % (B), and 0-50 wt % wt % (C).

    摘要翻译： 在通过在基底上施加非磁性底涂层和磁性面漆制成的磁记录介质中，底涂层包含含有分子量不小于400的化合物的辐射固化涂层材料，具有一种类型的双 键从丙烯酸，烯丙基和马来双键中选择，底涂层通过暴露于辐射形成。 具体地说，底涂层材料含有至少两种选自（A）分子量超过5000，优选超过8000，具有两个以上选自上述双键的化合物，（B）分子量为400 或更多但小于500，优选在600至3000的范围内，以及如上选择的两个或更多个双键，和（C）分子量小于400的那些和选自丙烯酸， 烯丙基，马来酸和苯乙烯双键。 以0-90重量％（A），0-80重量％（B）和0-50重量％重量（C）的混合比使用至少两种类型的化合物。

    Magnetic recording medium and production thereof
    10.
    发明授权
    Magnetic recording medium and production thereof 失效
    磁记录介质及其制造

    公开(公告)号：US4419406A

    公开(公告)日：1983-12-06

    申请号：US362655

    申请日：1982-03-29

    申请人： Yukihiro Isobe ,  Kazushi Tanaka ,  Masaharu Nishimatsu ,  Osamu Shinoura ,  Yuichi Kubota

    发明人： Yukihiro Isobe ,  Kazushi Tanaka ,  Masaharu Nishimatsu ,  Osamu Shinoura ,  Yuichi Kubota

    IPC分类号： G11B5/84 ,  C09D5/23 ,  C09D127/06 ,  C09D175/14 ,  G11B5/73 ,  G11B5/735 ,  B32B27/00

    CPC分类号： G11B5/7305 ,  Y10S428/90 ,  Y10T428/31544

    摘要： A magnetic recording medium having a magnetic layer on one surface of a substrate and a back layer on the other surface, which is characterized by that the back layer is that formed by dispering a filler such as carbon black, graphite, SiO.sub.2, TiO.sub.2, Al.sub.2 O.sub.3,Cr.sub.2 O.sub.3, SiC, CeO.sub.2, CaCO.sub.3, zinc oxide, geothite, .alpha.Fe.sub.2 O.sub.3, talc, kaolin, CaSO.sub.4, boron nitride, Teflon powder, graphite fluoride, molybdenum disulfide, zirconia etc. In a binder containing a radiation sensitive curable resin such as acryl-modified vinyl chloride - vinyl acetate - vinyl alcohol copolymer, acryl-modified polyurethane elastomer, acryl-modified polyester resin, etc. and curing it prior to rolling. The obtained back layer is very tough and can reduce the number of dropouts.

    摘要翻译： 一种磁性记录介质，其在基板的一个表面上具有磁性层，而在另一个表面上具有背层，其特征在于，背层是通过分散诸如炭黑，石墨，SiO 2，TiO 2，Al 2 O 3 ，Cr 2 O 3，SiC，CeO 2，CaCO 3，氧化锌，G​​eothite，αFe2 O 3，滑石，高岭土，CaSO 4，氮化硼，特氟隆粉末，氟化石墨，二硫化钼，氧化锆等。在含有辐射敏感性固化树脂如丙烯酸 改性氯乙烯 - 乙酸乙烯酯 - 乙烯醇共聚物，丙烯酸改性聚氨酯弹性体，丙烯酸改性聚酯树脂等，并在轧制前固化。 获得的背层非常坚硬，可以减少辍学次数。