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71. 发明授权

US4578299A Flexible magnetic disk sheet 失效
标题翻译：柔性磁盘片
公开(公告)号：US4578299A
公开(公告)日：1986-03-25
申请号：US633560
申请日：1984-07-23
申请人： Mikihiko Kato , Tsutomu Okita , Shigeo Komine , Yasutoshi Okuzawa , Kazuhiko Morita
发明人： Mikihiko Kato , Tsutomu Okita , Shigeo Komine , Yasutoshi Okuzawa , Kazuhiko Morita
IPC分类号： G11B5/72 , C09D133/06 , C09D183/04 , G11B5/725 , G11B5/82 , G11B23/00 , G11B23/033
CPC分类号： G11B5/725 , Y10S428/90 , Y10T428/24322 , Y10T428/24802 , Y10T428/265 , Y10T428/31609 , Y10T428/31786
摘要： A flexible magnetic disk sheet is described, including a central circular hole therein, having a protecting layer formed thereon using (a) a compound including one or more atomic group providing lubricity at at least one end of a main chain or a side chain of molecular of the compound and one or more ester bonds of acrylic acid or methacrylic acid at at least one end of a main chain or a side chain of molecule of the compound, and (b) an aromatic ketone, wherein said protective layer is formed on a surface portion surrounding the edge of the central circular hole of a flexible magnetic disk sheet.
摘要翻译：描述了包括其中的中心圆形孔的柔性磁盘片，其中使用（a）包含一个或多个原子团的化合物在其上形成保护层，所述化合物在分子的主链或侧链的至少一端提供润滑性的化合物和在化合物的分子的主链或侧链的至少一个末端的丙烯酸或甲基丙烯酸的一个或多个酯键，和（b）芳族酮，其中所述保护层形成在围绕柔性磁盘片的中心圆孔的边缘的表面部分。

72. 发明授权

US4518656A Magnetic recording medium and process for producing the same 失效
标题翻译：磁记录介质及其制造方法
公开(公告)号：US4518656A
公开(公告)日：1985-05-21
申请号：US537552
申请日：1983-10-03
申请人： Tsutomu Okita , Kyoichi Naruo
发明人： Tsutomu Okita , Kyoichi Naruo
IPC分类号： C09D5/23 , G11B5/70 , G11B5/702 , G11B5/84 , G11B5/842
CPC分类号： G11B5/7025 , G11B5/842 , Y10S428/90 , Y10T428/2991 , Y10T428/31935 , Y10T428/31975
摘要： A magnetic recording medium and a process for producing a magnetic recording medium are disclosed, the process comprising the steps of applying onto a non-magnetic base a composition comprising (1) a compound having an unsaturated bond polymerizable by electron beams, (2) at least one polymer, (3) ferromagnetic particles, and (4) an organic solvent, and then polymerizing and curing the resulting magnetic layer by irradiation with electron beams, said polymer being such that at least 10% thereof is adsorbed on the ferromagnetic particles in a mixture of 10 parts by weight of a 1 wt % solution of the polymer and 1 part by weight of the ferromagnetic particles.
摘要翻译：公开了磁记录介质和制造磁记录介质的方法，该方法包括以下步骤：向非磁性基底施加组合物，该组合物包含（1）具有通过电子束聚合的不饱和键的化合物，（2）在至少一种聚合物，（3）铁磁颗粒和（4）有机溶剂，然后通过用电子束照射聚合和固化所得到的磁性层，所述聚合物使其至少10％被吸附在铁磁颗粒上 10重量份的1重量％的聚合物溶液和1重量份的铁磁性颗粒的混合物。

73. 发明授权

US4468436A Magnetic recording material 失效
标题翻译：磁记录材料
公开(公告)号：US4468436A
公开(公告)日：1984-08-28
申请号：US452555
申请日：1982-12-23
申请人： Tsutomu Okita , Kiritani Masataka
发明人： Tsutomu Okita , Kiritani Masataka
IPC分类号： G11B5/738 , B05D3/06
CPC分类号： G11B5/738 , Y10S428/90 , Y10T428/31554 , Y10T428/31609 , Y10T428/31928
摘要： A magnetic recording material and a process for producing it are disclosed. The material is excellent in abrasion resistance and has good electric characteristics. The material is obtained by coating on a support a subbing layer having a compound which contains a compound having an unsaturated bond polymerizable upon irradiation with electron beams. Upon the subbing layer is coated a ferromagnetic layer which contains a compound having an unsaturated bond polymerizable upon irradiation with electron beams, an organic solvent capable of dissolving the compound, and a ferromagnetic fine powder. The material is then subjected to an electron-beam irradiating processing to result in the hardening of the subbing and ferromagnetic layers through polymerization.
摘要翻译：公开了磁记录材料及其制造方法。该材料具有优异的耐磨性和良好的电特性。该材料通过在载体上涂布具有含有具有在电子束照射下可聚合的不饱和键的化合物的化合物的底层而获得。在底层涂覆铁氧体层时，该铁磁层含有在电子束照射下可聚合的具有不饱和键的化合物，可溶解该化合物的有机溶剂和铁磁性细粉末。然后对该材料进行电子束照射处理，以通过聚合导致底层和铁磁性层的硬化。

74. 发明授权

US4428974A Process for producing magnetic recording material 失效
标题翻译：磁记录材料的制造方法
公开(公告)号：US4428974A
公开(公告)日：1984-01-31
申请号：US447597
申请日：1982-12-07
申请人： Tsutomu Okita , Kyoichi Naruo , Akira Ushimaru
发明人： Tsutomu Okita , Kyoichi Naruo , Akira Ushimaru
IPC分类号： G11B5/702 , B05D3/06 , C09D5/23 , C09D133/04 , C09D133/08 , C09D175/04 , G11B5/84 , G11B5/842
CPC分类号： B05D3/068 , G11B5/84 , G11B5/842
摘要： A process for producing a magnetic recording material having excellent electromagnetic characteristics and sufficient abrasion resistance is disclosed. The process comprises the steps of coating on a support a magnetic recording composition containing a compound having an unsaturated bond polymerizable by irradiation with electron beams, an organic solvent capable of dissolving the compound and a ferromagnetic powder. The compound is subjected in sequence to a coating process on a nonmagnetic support, irradiated with an electron beam in an atmosphere containing oxygen at a concentration of 10,000 ppm or more and subjected to a smoothening treatment utilizing a specular surface, followed by an electron beam irradiation in an atmosphere containing oxygen at a concentration of 3,000 ppm or less.
摘要翻译：公开了一种制造具有优异的电磁特性和足够耐磨性的磁记录材料的方法。该方法包括以下步骤：在载体上涂覆含有通过电子束照射可聚合的具有不饱和键的化合物的磁记录组合物，能够溶解化合物的有机溶剂和铁磁性粉末。将化合物依次涂覆在非磁性载体上，在含有浓度为10,000ppm以上的氧的气氛中用电子束照射，并使用镜面进行平滑化处理，然后进行电子束照射在含有浓度为3,000ppm以下的氧的气氛中。

75. 发明授权

US5702821A Magnetic recording medium comprising ferromagnetic powder and a specified polyurethane resin 失效
标题翻译：包含铁磁粉末和特定聚氨酯树脂的磁记录介质
公开(公告)号：US5702821A
公开(公告)日：1997-12-30
申请号：US555447
申请日：1995-11-09
申请人： Yuichiro Murayama , Masaki Satake , Hiroshi Hashimoto , Tsutomu Okita
发明人： Yuichiro Murayama , Masaki Satake , Hiroshi Hashimoto , Tsutomu Okita
IPC分类号： C09D5/23 , C09D175/00 , C09D175/04 , G11B5/702
CPC分类号： G11B5/7021 , Y10S428/90 , Y10T428/31609
摘要： In a binder for a magnetic recording medium for forming a magnetic layer with ferromagnetic powder dispersed therein being arranged on a non-magnetic support member, whereby said binder consists of a polyurethane resin, which is a reaction product of diol and organic diisocyanate as principal materials, said polyurethane resin contains a short-chain diol having cyclic structure by 17 to 40 weight %, and said polyurethane resin contains a long-chain diol comprising 1.0 to 5.0 mmol/g of ether group to total urethane resin by 10 to 50 weight %. According to a binder for a magnetic recording medium and a magnetic recording medium using said binder of the present invention, good dispersion property, high running durability and preservation property can be obtained.
摘要翻译：在用于形成其中分散有铁磁性粉末的磁性层的磁记录介质的粘合剂中，其布置在非磁性支撑构件上，由此所述粘合剂由作为主要材料的二醇和有机二异氰酸酯的反应产物的聚氨酯树脂所述聚氨酯树脂含有具有17〜40重量％的环状结构的短链二醇，所述聚氨酯树脂含有长链二醇，其含有1.0〜5.0mmol / g的醚基与总聚氨酯树脂的比例为10〜50重量％。根据本发明的磁记录介质用粘合剂和使用该粘合剂的磁记录介质，可以获得良好的分散性，高运行耐久性和保存性。

76. 发明授权

US5578376A Magnetic recording medium having a magnetic layer comprising a specified ferromagnetic metal powder and a specified polyurethane binder 失效
标题翻译：具有磁性层的磁性记录介质包括特定的铁磁金属粉末和特定的聚氨酯粘合剂
公开(公告)号：US5578376A
公开(公告)日：1996-11-26
申请号：US417959
申请日：1995-04-06
申请人： Hiroshi Hashimoto , Masatoshi Takahashi , Yuuichirou Murayama , Tsutomu Okita
发明人： Hiroshi Hashimoto , Masatoshi Takahashi , Yuuichirou Murayama , Tsutomu Okita
IPC分类号： C09D5/23 , C09D175/00 , C09D175/04 , G11B5/702 , G11B5/706
CPC分类号： G11B5/7022 , G11B5/70621 , Y10S428/90 , Y10T428/31609
摘要： A magnetic recording medium comprising a non-magnetic support having thereon a magnetic layer comprising ferromagnetic powder and a binder, the ferromagnetic powder comprising a ferromagnetic metal powder comprising Fe and having a crystal size of from 120 to 250 .ANG. and a Co content of from 5 to 40 atm %, and the binder comprises a polyurethane comprising a diol component and a polyisocyanate component, the diol component comprising a polyetherpolyol and a polyesterpolyol.
摘要翻译：一种磁记录介质，包括其上具有包含铁磁粉末和粘合剂的磁性层的非磁性载体，所述铁磁粉末包含Fe的铁磁性金属粉末，其晶体尺寸为120至250埃，Co含量为5 至40atm％，并且所述粘合剂包含包含二醇组分和多异氰酸酯组分的聚氨酯，所述二醇组分包含聚醚多元醇和聚酯多元醇。

77. 发明授权

US5567524A Magnetic recording medium having a cobalt thin film magnetic layer, carbon protective layer, and fluorolubricant layer 失效
标题翻译：具有钴薄膜磁性层，碳保护层和氟润滑剂层的磁记录介质
公开(公告)号：US5567524A
公开(公告)日：1996-10-22
申请号：US379931
申请日：1995-01-27
申请人： Toshio Ishida , Masaki Satake , Hideomi Watanabe , Tadashi Yasunaga , Tsutomu Okita
发明人： Toshio Ishida , Masaki Satake , Hideomi Watanabe , Tadashi Yasunaga , Tsutomu Okita
IPC分类号： G11B5/66 , C10M105/54 , C10N40/18 , G11B5/64 , G11B5/65 , G11B5/72 , G11B5/725 , G11B5/735
CPC分类号： G11B5/725 , Y10S428/90 , Y10T428/30 , Y10T428/3154 , Y10T428/31678
摘要： A magnetic recording medium having a ferromagnetic metal thin film formed over at least one surface of a non-magnetic support, wherein the improvement has a lubricant layer consisting essentially of at least one of unsaturated bond-containing fluoroalkyl carboxylic acid esters which are represented by the following formulae (1) to (3):Rf--R.sub.1 --COO--R.sup.2 Formula (1)R.sup.3 --COO--R.sub.4 --Rf Formula (2)Rf--R.sup.5 --COO--R.sup.6 Rf Formula (3)where Rf: (CF.sub.3).sub.a CF.sub.3-a (CF.sub.2).sub.ba: 1 to 3 a+b: 1 to 17R.sup.1 is an alkyl group having from 2 to 18 carbon atoms, or a hydrocarbon group having from 2 to 18 carbon atoms and containing at least one double or triple bond, and R.sup.2 is an alkyl group having from 4 to 22 carbon atoms, or a hydrocarbon group having from 4 to 22 carbon atoms and containing at least one double or triple bond. At least either one of R.sup.1 and R.sup.2 contains at least one double or triple bond. R.sup.3 is an alkyl group having from 3 to 21 carbon atoms, and R.sup.4 is a hydrocarbon group having from 4 to 18 carbon atoms and containing at least one double or triple bond. R.sup.5 and R.sup.6 are each an alkyl group having from 2 to 18 carbon atoms, or a hydrocarbon group having from 2 to 18 carbon atoms and containing at least one double or triple bond. At least either one of R.sup.5 and R.sup.6 contains at least one double or triple bond. R.sup.5 and R.sup.6 have from 20 to 44 carbon atoms in total.
摘要翻译：一种具有在非磁性载体的至少一个表面上形成的强磁性金属薄膜的磁记录介质，其中所述改进具有基本上由至少一种含不饱和键的氟烷基羧酸酯组成的润滑层，所述不饱和键的氟烷基羧酸酯由（1）至（3）：Rf-R1-COO-R2（1）R3-COO-R4-Rf（2）Rf-R5-COO-R6RfFormula（3）其中Rf：（CF3）aCF3-a CF 2）ba：1〜3 a + b：1〜17 R 1为碳原子数2〜18的烷基或碳原子数为2〜18的含有至少一个双键或三键的烃基，R 2 是具有4至22个碳原子的烷基或具有4至22个碳原子并且含有至少一个双键或三键的烃基。 R1和R2中至少有一个含有至少一个双键或三键。 R3是具有3至21个碳原子的烷基，R4是具有4至18个碳原子并含有至少一个双键或三键的烃基。 R 5和R 6各自为具有2至18个碳原子的烷基或具有2至18个碳原子且含有至少一个双键或三键的烃基。 R5和R6中的至少一个含有至少一个双键或三键。 R5和R6总共具有20至44个碳原子。

78. 发明授权

US5492764A Magnetic recording medium having a protective layer containing a tetrazaindene or thiouracil cyclic compound and a fluorine compound 失效
标题翻译：具有含有四嗪或硫脲嘧啶环化合物和氟化合物的保护层的磁记录介质
公开(公告)号：US5492764A
公开(公告)日：1996-02-20
申请号：US364410
申请日：1994-12-23
申请人： Tsutomu Okita , Toshio Ishida , Masaki Satake , Tadashi Yasunaga , Kazuyuki Usuki
发明人： Tsutomu Okita , Toshio Ishida , Masaki Satake , Tadashi Yasunaga , Kazuyuki Usuki
IPC分类号： G11B5/66 , C09D171/02 , C10M105/54 , C10M133/40 , C10M135/30 , C10N10/12 , C10N40/18 , G11B5/64 , G11B5/72 , G11B5/725 , G11B5/73 , G11B5/00
CPC分类号： G11B5/72 , G11B5/725 , Y10S428/90 , Y10T428/31678
摘要： The magnetic recording medium of the present invention comprises a ferromagnetic metallic thin film formed on a non-magnetic support, whereby a protective layer is formed on the ferromagnetic metallic thin film, said protective layer contains at least one type of thiouracil cyclic compounds having hydrocarbon group and at least one type of fluorine compounds having hydrocarbon group, or at least one type of tetrazaindene cyclic compounds and at least one type of fluorine compounds having hydrocarbon group, and no rusting occurs even when it is repeatedly run.
摘要翻译：本发明的磁记录介质包括在非磁性载体上形成的强磁性金属薄膜，由此在强磁性金属薄膜上形成保护层，所述保护层含有至少一种具有烃基的硫脲嘧啶环状化合物和至少一种具有烃基的氟化合物，或至少一种类型的四氮茚环状化合物和至少一种具有烃基的氟化合物，即使反复进行也不会发生生锈。

79. 发明授权

US5395696A Magnetic recording medium having a lubricant layer of a fluoroalkyl sulfo-compound 失效
标题翻译：具有氟烷基磺基化合物润滑层的磁记录介质
公开(公告)号：US5395696A
公开(公告)日：1995-03-07
申请号：US44505
申请日：1993-04-09
申请人： Toshio Ishida , Hideomi Watanabe , Tsutomu Okita , Kunihiko Honda , Kazuyuki Usuki
发明人： Toshio Ishida , Hideomi Watanabe , Tsutomu Okita , Kunihiko Honda , Kazuyuki Usuki
IPC分类号： G11B5/71 , C09D5/23 , C09D127/04 , C09D127/06 , C09D175/06 , C09D201/00 , C10M105/72 , C10M135/10 , C10N10/02 , C10N10/04 , C10N40/18 , G11B5/64 , G11B5/725 , G11B5/73 , G11B5/00
CPC分类号： G11B5/725 , Y10S428/90 , Y10T428/30 , Y10T428/3154 , Y10T428/31678 , Y10T428/31692
摘要： A magnetic recording medium having a magnetic recording layer on at least one surface of a non-magnetic support, wherein the magnetic recording layer has thereon a lubricant layer containing at least one fluoroalkyl sulfo compound having an ether or ester linkage, which is represented by the following formula (1). The magnetic recording medium is free from corrosion of the magnetic recording layer and has a low coefficient of friction and excellent running durability and shelf stability. The lubricant layer is particularly suitable for a magnetic recording medium having a metal thin film with or without an inorganic protective film as a magnetic recording layer.(Rf--A--R--SO.sub.3).sub.k X Formula (1)wherein Rf represents a fluoroalkyl group or a perfluoroalkyl group; A represents ##STR1## R represents an alkylene group; k represents an integer of 1 or 2; and X represents --H, --M, --MH (wherein M is an alkali metal or an alkali earth metal), or any one of primary to quaternary ammoniums.
摘要翻译：一种在非磁性载体的至少一个表面上具有磁记录层的磁记录介质，其中所述磁记录层上具有含有至少一个具有醚或酯键的氟代烷基磺基化合物的润滑剂层，以下公式（1）。磁记录介质没有磁记录层的腐蚀，并且具有低的摩擦系数和优良的运行耐久性和架子稳定性。润滑剂层特别适用于具有或不具有无机保护膜作为磁记录层的金属薄膜的磁记录介质。（Rf-A-R-SO 3）kXFormula（1）其中Rf表示氟代烷基或全氟烷基; A表示 R表示亚烷基; k表示1或2的整数; 和X表示-H，-M，-MH（其中M是碱金属或碱土金属）或任何一种至季铵。

80. 发明授权

US5153071A Magnetic recording medium wherein the magnetic layer has as the binder system a vinyl chloride copolymer and a polyether polyurethane resin which contains a ring structure 失效
标题翻译：磁性记录介质，其中磁性层具有作为粘合剂体系的氯乙烯共聚物和含有环结构的聚醚聚氨酯树脂
公开(公告)号：US5153071A
公开(公告)日：1992-10-06
申请号：US707971
申请日：1991-05-23
申请人： Hideomi Watanabe , Tsutomu Okita , Hiroshi Hashimoto
发明人： Hideomi Watanabe , Tsutomu Okita , Hiroshi Hashimoto
IPC分类号： C08L75/08 , G11B5/702
CPC分类号： G11B5/7022 , C08L75/08 , Y10S428/90 , Y10T428/3158 , Y10T428/31609
摘要： A magnetic recording medium comprising a non-magnetic support having thereon a magnetic layer comprising ferromagnetic particles disposed in a binder, the binder comprising a vinyl chloride copolymer and a polyurethane resin, wherein the polyurethane resin is a polyether polyurethane resin containing a polyether polyol having a ring structure.
摘要翻译：一种包含非磁性载体的磁记录介质，其上具有包含设置在粘合剂中的铁磁颗粒的磁性层，所述粘合剂包括氯乙烯共聚物和聚氨酯树脂，其中所述聚氨酯树脂是含有聚醚多元醇的聚醚聚氨酯树脂，环结构。

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