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公开(公告)号：US4664965A
公开(公告)日：1987-05-12
申请号：US684319
申请日：1984-12-20
CPC分类号： G11B5/7305 , Y10S428/90 , Y10T428/24372 , Y10T428/24413 , Y10T428/24942 , Y10T428/265 , Y10T428/31609 , Y10T428/31935
摘要： A magnetic recording medium is disclosed, which comprises a non-magnetic support having a surface roughness of not less than 0.01 .mu.m having thereon an intermediate layer and a magnetic layer, the intermediate layer comprising a polyester polyol having at least two acryloyl and/or methacryloyl groups in the molecule thereof, which has been polymerization-hardened by exposure to radiation. The magnetic recording medium has markedly improved video sensitivity, C/N ratio and adhesiveness between the support and the magnetic layer.
摘要翻译： 公开了一种磁记录介质，其包括表面粗糙度不小于0.01μm的非磁性载体，其上具有中间层和磁性层，所述中间层包含具有至少两个丙烯酰基和/或 其分子中的甲基丙烯酰基已经通过暴露于辐射聚合硬化。 磁记录介质显着提高了视频灵敏度，C / N比和支持层与磁性层之间的粘合性。
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公开(公告)号：US4707380A
公开(公告)日：1987-11-17
申请号：US875259
申请日：1986-06-17
CPC分类号： G11B5/84 , G11B5/7305
摘要： A process for preparing a magnetic recording medium is described, comprising subjecting a surface of a non-magnetic support having a surface roughness of not less than 0.01 .mu.m to a non-contact surface treatment, providing a layer containing a compound polymerizable by radiation exposure on the surface of the support, exposing said layer to radiation, and then providing a magnetic layer on the radiation-exposed layer.
摘要翻译： 描述了一种制备磁记录介质的方法，包括使表面粗糙度不小于0.01μm的非磁性载体的表面进行非接触表面处理，从而提供含有通过辐射曝光可聚合的化合物的层 在支撑体的表面上，将所述层暴露于辐射，然后在辐射暴露层上提供磁性层。
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公开(公告)号：US4690870A
公开(公告)日：1987-09-01
申请号：US654290
申请日：1984-09-25
申请人： Tsutomu Okita , Nobuo Tsuji , Hiroshi Hashimoto , Yoshito Mukaida
发明人： Tsutomu Okita , Nobuo Tsuji , Hiroshi Hashimoto , Yoshito Mukaida
IPC分类号： C09D5/23 , C09D101/18 , C09D127/04 , C09D127/06 , C09D175/04 , C09D175/14 , G11B5/702
CPC分类号： G11B5/7026 , G11B5/7022 , Y10S428/90 , Y10T428/31609 , Y10T428/31935 , Y10T428/31971
摘要： A magnetic recording medium comprising a non-magnetic support having thereon an electron-beam radiation-cured magnetic recording layer, said magnetic layer comprising a ferromagnetic oxide and a binder comprising(1) a resin selected from the group consisting of a vinyl resin containing a carboxylic group in an amount of about 5.times.10.sup.-5 to 2.times.10.sup.-3 equivalent per gram and a nitrocellulose resin;(2) an urethane resin having at least one terminal acrylate group in the main chain or in a side chain of the molecule; and(3) a compound having at least one acryloyl group which is obtained by modifying the isocyanate group of a polyisocyanate having at least two isocyanate groups per molecule.
摘要翻译： 一种磁记录介质，包括其上具有电子束辐射固化磁记录层的非磁性载体，所述磁性层包含铁磁性氧化物和粘合剂，所述粘合剂包括（1）选自乙烯基树脂中的树脂， 羧基的量为约5×10-5至2×10-3当量/克和硝酸纤维素树脂; （2）在分子的主链或侧链中具有至少一个末端丙烯酸酯基团的聚氨酯树脂; 和（3）具有至少一个丙烯酰基的化合物，其通过每分子具有至少两个异氰酸酯基团的多异氰酸酯的异氰酸酯基进行改性而获得。
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公开(公告)号：US4621027A
公开(公告)日：1986-11-04
申请号：US666081
申请日：1984-10-29
申请人： Tsutomu Okita , Nobuo Tsuji , Yoshito Mukaida , Hiroshi Hashimoto , Teruo Nakagawa , Akiyoshi Hashimoto , Takahisa Ogasawara, deceased
发明人： Tsutomu Okita , Nobuo Tsuji , Yoshito Mukaida , Hiroshi Hashimoto , Teruo Nakagawa , Akiyoshi Hashimoto , Takahisa Ogasawara, deceased
IPC分类号： C09D5/23 , C09D127/04 , C09D127/06 , C09D175/00 , C09D175/04 , G11B5/702 , G11B5/70
CPC分类号： G11B5/7023 , G11B5/7021 , G11B5/7022 , G11B5/7026 , Y10S428/90 , Y10T428/31609 , Y10T428/31935
摘要： A magnetic recording medium is described, comprising a support and a magnetic layer disposed thereon, said magnetic layer containing as its binder component a combination of at least one member of each of the following groups of compounds (1) to (3) that has been exposed to electron beams:(1) vinyl chloride type resin, vinyl acetate type resin, vinyl chloride-vinyl acetate type resin, each containing from 5.times.10.sup.-5 to 2.times.10.sup.-3 equivalents of --CO.sub.2 H groups per gram of copolymer, and nitrocellulose resin;(2) urethane resins and urethane-acrylate oligomers; and(3) compounds containing an isocyanurate ring and at least two groups selected from acryloyl and methacryloyl groups.
摘要翻译： 描述了一种磁记录介质，其包括支撑体和设置在其上的磁性层，所述磁性层包含作为其粘合剂组分的化合物（1）至（3）的以下各组中的至少一个的组合， 暴露于电子束：（1）氯乙烯类树脂，乙酸乙烯酯型树脂，氯乙烯 - 乙酸乙烯酯型树脂，每克共聚物含有5×10-5至2×10-3当量的-CO 2 H基，硝基纤维素树脂; （2）聚氨酯树脂和氨基甲酸酯丙烯酸酯低聚物; 和（3）含有异氰脲酸酯环和至少两个选自丙烯酰基和甲基丙烯酰基的基团的化合物。
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公开(公告)号：US4693927A
公开(公告)日：1987-09-15
申请号：US712095
申请日：1985-03-15
申请人： Yasuo Nishikawa , Tsutomu Okita , Yoshito Mukaida , Kenji Yanagihara , Mituo Kimura , Masahiro Niinomi
发明人： Yasuo Nishikawa , Tsutomu Okita , Yoshito Mukaida , Kenji Yanagihara , Mituo Kimura , Masahiro Niinomi
IPC分类号： G11B5/72
CPC分类号： G11B5/72 , Y10S428/90 , Y10T428/24975 , Y10T428/265 , Y10T428/3154 , Y10T428/31544 , Y10T428/31663 , Y10T428/31692 , Y10T428/31699
摘要： A magnetic recording medium has an improved protective film covering a thin magnetic metal thin film provided on a non-magnetic support. The protective film consists of a plurality of layers formed by plasma polymerization, the base layer of which has a density of 0.7 to 1.5 g/cm.sup.3 and the surface layer of which has a density of not less than 1.2 g/cm.sup.3. This magnetic recording medium has good scratch resistance, weather resistance and abrasion resistance in addition to extremely small spacing loss. The magnetic recording medium can be produced by plasma polymerization of a wide variety of monomeric compounds.
摘要翻译： 磁记录介质具有覆盖设置在非磁性载体上的薄磁性金属薄膜的改进的保护膜。 保护膜由通过等离子体聚合形成的多个层组成，其基底的密度为0.7-1.5g / cm3，其表面密度为不小于1.2g / cm3。 除了极小的间隔损耗之外，该磁记录介质具有良好的耐擦伤性，耐候性和耐磨性。 磁记录介质可以通过各种单体化合物的等离子体聚合来制备。
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公开(公告)号：US4713287A
公开(公告)日：1987-12-15
申请号：US654288
申请日：1984-09-25
申请人： Yasuo Nishikawa , Tsutomu Okita , Yoshito Mukaida , Masahiro Niinomi , Kenji Yanagihara , Mituo Kimura
发明人： Yasuo Nishikawa , Tsutomu Okita , Yoshito Mukaida , Masahiro Niinomi , Kenji Yanagihara , Mituo Kimura
IPC分类号： G11B5/66 , C09D127/12 , C10M107/38 , C10N40/18 , G11B5/64 , G11B5/72 , G11B5/725 , G11B5/73 , G11B5/735
CPC分类号： G11B5/735 , G11B5/725 , Y10S428/90 , Y10T428/265 , Y10T428/27 , Y10T428/3154 , Y10T428/31699
摘要： A magnetic recording medium is described, comprising a support having provided thereon a thin magnetic metal film, and a thin layer consisting essentially of at least one fluorinated polymer selected from 1,1-difluoroethylene polymer 1,1,2-trifluoroethylene polymer and the copolymer thereof being provided on at least one of the surface of the thin magnetic metal film and the surface of the support opposite to the thin magnetic metal film.
摘要翻译： 描述了一种磁记录介质，其包括其上设置有薄磁性金属膜的支撑体和基本上由至少一种选自1,1-二氟乙烯聚合物1,1,2-三氟乙烯聚合物和共聚物的氟化聚合物组成的薄层 其设置在薄磁性金属膜的表面和与薄磁性金属膜相对的支撑体的表面中的至少一个上。
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公开(公告)号：US4699844A
公开(公告)日：1987-10-13
申请号：US598097
申请日：1984-04-09
申请人： Tsutomu Okita , Nobuo Tsuji , Yoshito Mukaida
发明人： Tsutomu Okita , Nobuo Tsuji , Yoshito Mukaida
IPC分类号： C09D5/23 , C09D127/04 , C09D127/06 , C09D175/00 , C09D175/14 , G11B5/702 , G11B5/78
CPC分类号： G11B5/7026 , G11B5/7022 , Y10S428/90 , Y10T428/31609 , Y10T428/31935
摘要： A magnetic recording medium comprised of a support base having a magnetic recording provided thereon is disclosed. The recording layer is comprised of ferromagnetic particles dispersed in a binder. The binder includes (1) a vinyl chloride-vinyl alkanoate type copolymer containing --CO.sub.2 H group of 5.times.10.sup.-5 to 1.7.times.10.sup.-3 equivalent per g of the polymer, (2) urethane acrylate having a molecular weight in the range of from 20,000 to 300,000, and (3) a compound having at least two (meth)acryloyl groups in the molecule and having a molecular weight of 600 or less. The magnetic recording layer is irradiated with electron beams in order to harden the binder. The resulting medium has excellent electromagnetic properties and the magnetic coating composition prepared for making the magnetic recording layer has excellent stability during storage.
摘要翻译： 公开了一种磁记录介质，包括其上提供有磁记录的支撑基座。 记录层由分散在粘合剂中的铁磁颗粒组成。 粘合剂包括（1）含有每10克聚合物5×10-5至1.7×10-3当量的-CO 2 H基的氯乙烯 - 乙烯基链烷酸酯型共聚物，（2）分子量范围为20,000至 300,000，和（3）在分子中具有至少两个（甲基）丙烯酰基并且分子量为600以下的化合物。 用电子束照射磁记录层，以使粘合剂硬化。 所得到的介质具有优异的电磁特性，并且制备用于制备磁记录层的磁性涂料组合物在储存期间具有优异的稳定性。
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公开(公告)号：US4576866A
公开(公告)日：1986-03-18
申请号：US592671
申请日：1984-03-23
申请人： Tsutomu Okita , Nobuo Tsuji , Yoshito Mukaida
发明人： Tsutomu Okita , Nobuo Tsuji , Yoshito Mukaida
IPC分类号： C08L75/16 , C09D5/23 , C09D101/18 , C09D127/04 , C09D127/06 , C09D175/04 , G11B5/702 , G11B5/70
CPC分类号： G11B5/7026 , C08L75/16 , G11B5/7022 , Y10S428/90 , Y10T428/265 , Y10T428/31609 , Y10T428/31935
摘要： There is provided a magnetic recording material which comprises a support and a magnetic layer coated thereon. The magnetic layer contains as its binder, a combination of at least one vinyl chloride-vinyl acetate-based copolymer characterized by its --CO.sub.2 H content or cellulose dinitrate, at least one urethane acrylate having a particular chemical structure, and at least one low molecular weight compound having two or more acryloyl or methacryloyl groups. The magnetic layer is hardened by beam irradiation. Thus, marked increase in dispersibility of ferromagnetic powders, improvement in electromagnetic transformation characteristics and sharp increase in durability are attained.
摘要翻译： 提供了一种磁记录材料，其包括载体和涂覆在其上的磁性层。 磁性层包含作为其粘合剂的至少一种以其-CO 2 H含量或硝酸纤维素为特征的氯乙烯 - 乙酸乙烯酯基共聚物，至少一种具有特定化学结构的氨基甲酸酯丙烯酸酯和至少一种低分子量 具有两个以上丙烯酰基或甲基丙烯酰基的化合物。 磁性层通过光束照射而硬化。 因此，铁磁粉末的分散性显着增加，电磁转变特性的提高和耐久性急剧增加。
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公开(公告)号：US4711809A
公开(公告)日：1987-12-08
申请号：US654286
申请日：1984-09-25
申请人： Yasuo Nishikawa , Tsutomu Okita , Yoshito Mukaida , Masahiro Niinomi , Kenji Yanagihara , Mituo Kimura
发明人： Yasuo Nishikawa , Tsutomu Okita , Yoshito Mukaida , Masahiro Niinomi , Kenji Yanagihara , Mituo Kimura
IPC分类号： G11B5/72
CPC分类号： G11B5/72 , Y10S428/90 , Y10T428/265 , Y10T428/3154 , Y10T428/31544
摘要： A magnetic recording medium is disclosed which comprises a support having provided thereon a thin magnetic metal film, a plasma polymerized layer being provided on the thin magnetic film, in which the plasma polymerized layer is formed in a monomer gas or in a gas containing the monomer gas of at least one of compounds represented by the following general formulae (I) or (II), ##STR1## wherein A represents a hydrogen atom or a fluorine atom, B represents a hydrogen atom, a chlorine atom or an alkyl group having 1 to 4 carbon atoms, an alkenyl group having 2 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, an alkanoyloxy group having 1 to 4 carbon atoms, which is unsubstituted or substituted with a fluorine atom, D represents a hydrogen atom, --R, --O--R, ##STR2## where R represents an alkyl group having 1 to 4 carbon atoms or an alkenyl group having 2 to 4 carbon atoms.
摘要翻译： 公开了一种磁记录介质，其包括在其上设置有薄磁性金属膜的支撑体，在薄磁性膜上设置有等离子体聚合层，其中等离子体聚合层形成在单体气体或含有单体的气体中 由下列通式（I）或（II）表示的至少一种化合物的气体，其中A表示氢原子或氟原子，B表示氢原子 ，碳原子数为1〜4的氯原子或烷基，碳原子数2〜4的烯基，碳原子数1〜4的烷氧基，碳原子数1〜4的烷酰氧基，未取代或取代的 具有氟原子，D表示氢原子，-R，-OR，其中R表示具有1至4个碳原子的烷基或具有2至4个碳原子的链烯基。
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公开(公告)号：US4672002A
公开(公告)日：1987-06-09
申请号：US598098
申请日：1984-04-09
申请人： Tsutomu Okita , Nobuo Tsuji , Yoshito Mukaida
发明人： Tsutomu Okita , Nobuo Tsuji , Yoshito Mukaida
CPC分类号： G11B5/7026 , G11B5/7022 , Y10S428/90 , Y10T428/31609 , Y10T428/31935
摘要： A magnetic recording medium comprising a support having coated thereon a magnetic layer is disclosed. The magnetic layer contains, as a binder, a composition cured with electron beam comprising (a) at least one of vinyl chloride-vinyl acetate type resins containing 5.times.10.sup.-5 to 1.7.times.10.sup.-3 equivalents of a carboxyl group per gram of the polymer and introcellulose resins, (b) a urethane resin and (c) at least one compound selected from the group consisting of aromatic or alicyclic compounds containing at least two vinyl linkages in the molecule and acryloyl-modified polyisocyanate compounds. The magnetic recording medium has excellent electromagnetic properties and durability.
摘要翻译： 公开了一种包括其上涂覆有磁性层的载体的磁记录介质。 磁性层含有电子束固化的组合物，该组合物包含（a）每克聚合物含有5×10-5至1.7×10-3当量的羧基的氯乙烯 - 乙酸乙烯酯型树脂中的至少一种，和 内层纤维素树脂，（b）聚氨酯树脂和（c）至少一种选自分子中含有至少两个乙烯基键的芳族或脂环族化合物的化合物和丙烯酰基改性的多异氰酸酯化合物。 磁记录介质具有优异的电磁特性和耐久性。
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