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公开(公告)号：US4135036A
公开(公告)日：1979-01-16
申请号：US755303
申请日：1976-12-29
CPC分类号： G11B5/7023 , Y10S428/90 , Y10T428/31511 , Y10T428/31725
摘要： A process for producing a magnetic recording medium with a magnetic recording layer comprising coating a magnetic coating composition comprising mainly a ferromagnetic powder, a binder, and a predominantly aqueous coating solvent on a nonmagnetic support and then drying, wherein the binder contains a water-soluble or water-dispersible amide compound. In a particularly preferred embodiment, the binder also contains an epoxy compound containing on the average one or more adjacent epoxy groups in the molecule.
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公开(公告)号：US4664979A
公开(公告)日：1987-05-12
申请号：US647564
申请日：1984-09-05
申请人： Yasuyuki Yamada , Yoshito Mukaida
发明人： Yasuyuki Yamada , Yoshito Mukaida
IPC分类号： C09D5/23 , C09D109/02 , C09D121/00 , C09D127/04 , C09D127/06 , C09D171/00 , C09D171/12 , C09D175/00 , C09D175/04 , G11B5/702 , G11B5/73
CPC分类号： G11B5/7023 , G11B5/7022 , Y10S428/90 , Y10T428/31511 , Y10T428/31529 , Y10T428/31609 , Y10T428/31826 , Y10T428/31931 , Y10T428/31935
摘要： A magnetic recording medium comprising a magnetic layer on a non-magnetic base, said magnetic layer containing ferromagnetic particles and a binder comprising (a) a copolymer of at least vinyl chloride and vinyl acetate, (b) a synthetic rubber selected from the group consisting of diolefinic and olefinic synthetic rubbers and (c) a resin selected from the group consisting of phenoxy resin and polyhydroxy ether ester resin.
摘要翻译： 一种磁记录介质，包括在非磁性基底上的磁性层，所述磁性层含有铁磁颗粒和粘合剂，所述粘合剂包含（a）至少氯乙烯和乙酸乙烯酯的共聚物，（b）选自以下的合成橡胶： 的二烯烃和烯烃合成橡胶，和（c）选自苯氧基树脂和多羟基醚酯树脂的树脂。
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公开(公告)号：US4752530A
公开(公告)日：1988-06-21
申请号：US795607
申请日：1985-11-06
申请人： Yasuyuki Yamada , Yoshito Mukaida
发明人： Yasuyuki Yamada , Yoshito Mukaida
IPC分类号： C08L75/04 , C09D5/23 , C09D127/04 , C09D127/06 , C09D175/00 , C09D175/04 , G11B5/702
CPC分类号： G11B5/7022 , C08L75/04 , Y10S428/90 , Y10T428/31609 , Y10T428/31935
摘要： A magnetic recording medium is described, comprising a non-magnetic support having provided thereon a magnetic layer including ferromagnetic powder and a binder comprising a polyurethane resin having a metal salt group of sulfonic acid and vinyl chloride/vinyl acetate-based copolymer containing from 0.2 wt. % to less than 1.5 wt. % of maleic acid. The magentic recording medium has reduced deterioration of the video S/N ratio under high temperature and high humidity.
摘要翻译： 描述了一种磁记录介质，其包括非磁性载体，其上设置有包含铁磁粉末的磁性层和包含具有磺酸金属盐基团的聚氨酯树脂和含有0.2重量％的氯乙烯/乙酸乙烯酯基共聚物的粘合剂 。 ％至小于1.5wt。 ％的马来酸。 磁性记录介质在高温高湿下降低了视频S / N比的劣化。
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公开(公告)号：US4444838A
公开(公告)日：1984-04-24
申请号：US387129
申请日：1982-06-10
申请人： Yasuyuki Yamada , Goro Akashi , Nobuo Tsuji , Yoshito Mukaida
发明人： Yasuyuki Yamada , Goro Akashi , Nobuo Tsuji , Yoshito Mukaida
CPC分类号： C08G18/6484 , G11B5/7022 , Y10S428/90 , Y10T428/264 , Y10T428/265 , Y10T428/31609 , Y10T428/31826 , Y10T428/31931
摘要： A magnetic recording medium which comprises on a support base having coated thereon a magnetic layer containing a binder and a ferromagnetic fine powder dispersed in the binder is disclosed. The binder is comprised of a cellulose derivative having a residual OH group in a proportion of 7.5 to 40%, a diolefin or olefin series synthetic rubber and a polyisocyanate compound. The medium has excellent video sensitivity and video signal to noise ratio. The medium of the invention also have improved abrasion resistance.
摘要翻译： 公开了一种磁记录介质，其包括在其上涂覆有包含粘合剂的磁性层的支撑基底和分散在粘合剂中的铁磁细粉末。 粘合剂由具有7.5〜40％的残留OH基的纤维素衍生物，二烯烃或烯烃系合成橡胶和多异氰酸酯化合物构成。 该介质具有出色的视频灵敏度和视频信噪比。 本发明的介质也具有改善的耐磨性。
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公开(公告)号：US4728577A
公开(公告)日：1988-03-01
申请号：US650467
申请日：1984-09-14
申请人： Yasuyuki Yamada , Yoshito Mukaida
发明人： Yasuyuki Yamada , Yoshito Mukaida
IPC分类号： C08G18/30 , C09D5/23 , C09D101/08 , C09D175/00 , C09D175/04 , G11B5/702 , G11B5/704 , G11B5/706
CPC分类号： C08G18/302 , G11B5/7022 , Y10S428/90 , Y10T428/31565 , Y10T428/31609 , Y10T428/31786 , Y10T428/31971
摘要： A magnetic recording medium is disclosed which comprises a non-magnetic support having coated thereon a magnetic layer comprising a magnetic substance and a binder comprising a cellulose derivative, a polyurethane resin and a polyisocyanate, the non-magnetic support having a heat shrinkage of about 0.15% or less and the water content of the medium being at least about 0.35% by weight.
摘要翻译： 公开了一种磁记录介质，其包括其上涂覆有磁性物质的磁性层的非磁性载体和包含纤维素衍生物，聚氨酯树脂和多异氰酸酯的粘合剂，所述非磁性载体的热收缩率为约0.15 ％以下，介质的含水量为至少约0.35重量％。
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公开(公告)号：US4391851A
公开(公告)日：1983-07-05
申请号：US353791
申请日：1982-03-02
申请人： Yasuyuki Yamada , Goro Akashi , Nobuo Tsuji , Yoshito Mukaida , Masaaki Fujiyama
发明人： Yasuyuki Yamada , Goro Akashi , Nobuo Tsuji , Yoshito Mukaida , Masaaki Fujiyama
CPC分类号： G11B5/84 , G11B5/7021
摘要： A process for producing a magnetic recording medium is disclosed. The process involves coating a non-magnetic base with magnetic coating solution containing fine ferromagnetic particles and a binder comprising nitrocellulose, polyol and an isocyanate having at least two isocyanato groups. In the process, the web having 0.3 to 3 wt % of the residual solvent in the magnetic layer is calendered, and the calendered web is then dried thoroughly.
摘要翻译： 公开了一种制造磁记录介质的方法。 该方法包括用含有细铁磁颗粒的磁性涂层溶液和包含硝化纤维素，多元醇和具有至少两个异氰酸酯基的异氰酸酯的粘合剂涂覆非磁性碱。 在该方法中，将磁性层中的残留溶剂的0.3〜3重量％的纤维网压延，然后将压延纤维网彻底干燥。
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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：US4693799A
公开(公告)日：1987-09-15
申请号：US841183
申请日：1986-03-19
CPC分类号： B05D1/62
摘要： A process for producing a plasma polymerized film, which comprises forming a plasma polymerized film on the surface of a substrate placed in a reaction zone by subjecting an organic compound containing gas to plasma polymerization utilizing low temperature plasma formed by pulse discharging, in which the time for non-discharge condition is at least 1 msec. and the voltage rise time for gas breakdown is not longer than 100 msec. The plasma polymerized film obtained has a small coefficient of friction, high lubricity, durability and heat resistance and is useful as a solid lubricating film, etc.
摘要翻译： 一种等离子体聚合薄膜的制造方法，其特征在于，包括通过使用通过脉冲放电形成的低温等离子体使含有气体的有机化合物进行等离子体聚合，在放置在反应区域的基板的表面上形成等离子体聚合膜， 对于非放电状态至少为1毫秒。 气体击穿的电压上升时间不超过100毫秒。 获得的等离子体聚合膜具有小的摩擦系数，高润滑性，耐久性和耐热性，并且可用作固体润滑膜等。
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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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