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1. 发明授权

US4657817A Magnetic recording material 失效
标题翻译：磁记录材料
公开(公告)号：US4657817A
公开(公告)日：1987-04-14
申请号：US558673
申请日：1983-12-06
申请人： Tsutomu Okita , Kyoichi Naruo , Nobuo Tsuji , Teruo Nakagawa , Kiyoshi Murase , Takahisa Ogasawara
发明人： Tsutomu Okita , Kyoichi Naruo , Nobuo Tsuji , Teruo Nakagawa , Kiyoshi Murase , Takahisa Ogasawara
IPC分类号： C08F290/00 , C08F299/06 , C08G18/42 , C08G18/67 , C08L75/16 , C09D5/23 , C09D175/04 , C09D175/14 , G11B5/702 , G11B5/70
CPC分类号： G11B5/7026 , C08G18/42 , C08G18/672 , C08L75/16 , G11B5/7021 , Y10S428/90 , Y10T428/31609
摘要： There is provided a magnetic recording material produced by coating on a support a magnetic coating composition which contains as main components a magnetic powder and a binder, the binder comprising an urethane acrylate synthesized using a polyester polyol having a particular structure, and by irradiating the resulting magnetic coat with electron beams to harden it. The polyester polyol contains polyhydric alcohol component, 50 mole % or more of which is a dihydric alcohol selected from the class (A) described below, and/or polybasic acid component, 50 mole % or more of which is a dibasic acid selected from the class (B) described below. The urethane acrylate is synthesized under such a condition that it may have two or more of (meth)acryloyl groups per molecule. Thus, improvements in electromagnetic properties and in durability are attained.Class (A): Alkyl-substituted aliphatic dihydric alcohols, alicyclic dihydric alcohols, and dihydric alcohols made by addition of alkylene oxides to alicyclic or aromatic dihydric alcohols.Class (B): Alicyclic dicarboxylic acids and aromatic dicarboxylic acids.
摘要翻译：提供了一种通过在载体上涂覆磁性涂料组合物而制备的磁记录材料，磁性涂料组合物含有作为主要组分的磁性粉末和粘合剂，所述粘合剂包含使用具有特定结构的聚酯多元醇合成的聚氨酯丙烯酸酯，并且通过照射所得到的磁性涂层用电子束硬化。聚酯多元醇含有多元醇成分，其中50摩尔％以上是选自下述（A）的二元醇，和/或多元酸成分，50摩尔％以上的二元酸选自（B）类。氨基甲酸酯丙烯酸酯在每分子可以具有两个以上（甲基）丙烯酰基的条件下合成。因此，获得了电磁特性和耐久性的改善。（A）类：烷基取代的脂族二元醇，脂环族二元醇和通过将环氧烷烃加成到脂环族或芳族二元醇中制得的二元醇。类（B）：脂环族二羧酸和芳族二羧酸。

2. 发明授权

US4520070A Magnetic recording medium and process for producing same 失效
标题翻译：磁记录介质及其制造方法
公开(公告)号：US4520070A
公开(公告)日：1985-05-28
申请号：US350509
申请日：1982-02-19
申请人： Nobuyuki Yamamoto , Yasuo Nishikawa , Kyoichi Naruo , Tsutomu Okita
发明人： Nobuyuki Yamamoto , Yasuo Nishikawa , Kyoichi Naruo , Tsutomu Okita
IPC分类号： G11B5/66 , C10M105/04 , C10M105/24 , C10N30/06 , C10N40/18 , G11B5/64 , G11B5/72 , G11B5/725 , G11B5/73 , G11B5/735 , G11B5/84 , B05D5/12
CPC分类号： G11B5/738 , G11B5/725 , G11B5/84 , Y10S428/90 , Y10T428/265 , Y10T428/273 , Y10T428/31565 , Y10T428/31605
摘要： A magnetic recording medium having a thin magnetic film on a non-magnetic support base is disclosed. A layer of a compound which contains at least two isocyanate groups is formed in connection with the medium, and may be formed on either the surface of the metal film or the surface of the base opposite the metal film, or both. The resulting medium has excellent running properties, wear resistance and electro-to-magnetic conversion characteristics which are maintained after repeated use. The medium is formed by providing a non-magnetic support base surface and coating that surface with a thin magnetic metal film by use of a process such as vapor deposition. A solution of a compound containing at least two isocyanate groups is then applied to the medium within a solvent after which a heat treatment is carried out, thus forming the layer of compound containing the isocyanate groups.
摘要翻译：公开了一种在非磁性支撑基底上具有薄磁膜的磁记录介质。与介质结合形成含有至少两个异氰酸酯基的化合物层，并且可以形成在金属膜的表面或与金属膜相反的基底表面上，或两者之间。所得到的介质具有优异的运行性能，耐磨性和电 - 磁转换特性，其在重复使用后保持。通过提供非磁性支撑基底表面并通过使用诸如气相沉积的方法用薄的磁性金属膜涂覆该表面来形成介质。然后将含有至少两个异氰酸酯基团的化合物的溶液施加到溶剂中的介质中，然后进行热处理，从而形成含有异氰酸酯基团的化合物层。

3. 发明授权

US4486500A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US4486500A
公开(公告)日：1984-12-04
申请号：US542899
申请日：1983-10-19
申请人： Kyoichi Naruo , Nobuyuki Yamamoto , Tsutomu Okita
发明人： Kyoichi Naruo , Nobuyuki Yamamoto , Tsutomu Okita
IPC分类号： G11B5/66 , C08F2/46 , C10M107/22 , C10N40/18 , G11B5/64 , G11B5/72 , G11B5/725 , G11B5/735 , G11B5/84 , B05D5/12
CPC分类号： G11B5/725 , G11B5/84 , Y10S428/90 , Y10T428/265
摘要： A magnetic recording medium having a thin magnetic metal film on a non-magnetic base is disclosed. A surface layer is formed on either the thin magnetic metal film or the other side of the base or both by irradiating a coating of a polymer having an unsaturated bond polymerizable by radiation. A process for producing such magnetic recording medium is also disclosed.
摘要翻译：公开了一种在非磁性基底上具有薄磁性金属膜的磁记录介质。通过照射通过辐射可聚合的具有不饱和键的聚合物的涂层，在薄的磁性金属膜或基底的另一侧或两者上形成表面层。还公开了制造这种磁记录介质的方法。

4. 发明授权

US4482610A 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：US4482610A
公开(公告)日：1984-11-13
申请号：US345907
申请日：1982-02-04
申请人： Tsutomu Okita , Kyoichi Naruo
发明人： Tsutomu Okita , Kyoichi Naruo
IPC分类号： C09D5/23 , G11B5/702 , G11B5/842 , H01F10/02
CPC分类号： G11B5/7026 , Y10S428/90 , Y10T428/31797
摘要： A magnetic recording medium and a process for producing a magnetic recording medium are disclosed, the process comprising the steps of applying to a non-magnetic base a composition comprising (1) a compound having an unsaturated bond polymerizable by electron beams, (2) a compound having one or more carbon-carbon unsaturated bonds, (3) ferromagnetic particles and (4) an organic solvent, and polymerizing and curing the applied coating by irradiation with electron beams, said compound having one or more unsaturated bonds is such that at least 10 wt % thereof is adsorbed onto the ferromagnetic particles in a mixture of 10 parts by weight of a 1 wt % solution of the compound 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）具有可通过电子束聚合的不饱和键的化合物，（2）具有一个或多个碳 - 碳不饱和键的化合物，（3）铁磁颗粒和（4）有机溶剂，并且通过用电子束照射聚合和固化涂覆的涂层，所述具有一个或多个不饱和键的化合物至少使得至少 10重量％以10重量份的化合物1重量％和1重量份铁磁性颗粒的混合物吸附在铁磁性颗粒上。

5. 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。

6. 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。

7. 发明授权

US4448848A 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：US4448848A
公开(公告)日：1984-05-15
申请号：US345903
申请日：1982-02-04
申请人： Tsutomu Okita , Kyoichi Naruo
发明人： Tsutomu Okita , Kyoichi Naruo
IPC分类号： C09D5/23 , G11B5/702 , G11B5/708 , G11B5/84 , G11B5/842 , H01F10/02
CPC分类号： G11B5/7028 , G11B5/84 , Y10S428/90 , Y10T428/31663
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 magnetic coating composition comprising (1) a compound having a carbon-carbon unsaturated bond polymerizable by electron beams, (2) a coupling agent having a carbon-carbon unsaturated bond, (3) ferromagnetic particles, and (4) an organic solvent, and curing the applied magnetic coating composition by irradiation with electron beams.
摘要翻译：公开了磁记录介质和磁记录介质的制造方法，该方法包括以下步骤：在非磁性基底上施加磁性涂料组合物，该组合物包含（1）具有可通过电子束聚合的碳 - 碳不饱和键的化合物，（2）具有碳 - 碳不饱和键的偶联剂，（3）铁磁性颗粒和（4）有机溶剂，并通过用电子束照射固化涂覆的磁性涂料组合物。

8. 发明授权

US4443514A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US4443514A
公开(公告)日：1984-04-17
申请号：US347618
申请日：1982-02-10
申请人： Nobuyuki Yamamoto , Yasuo Nishikawa , Yuji Andou , Kyoichi Naruo , Tsutomu Okita
发明人： Nobuyuki Yamamoto , Yasuo Nishikawa , Yuji Andou , Kyoichi Naruo , Tsutomu Okita
IPC分类号： G11B5/66 , G11B5/64 , G11B5/72 , G11B5/73 , G11B5/735
CPC分类号： G11B5/72 , G11B5/7305 , Y10S428/90 , Y10T428/24975 , Y10T428/265 , Y10T428/31605 , Y10T428/31699 , Y10T428/31703
摘要： A magnetic recording medium having a thin magnetic metal film formed on a non-magnetic base is disclosed. A thin film of a copolymer having vinylidene chloride and acrylonitrile as repeating units is formed on either the thin magnetic metal film or the surface of the base opposite the thin magnetic metal film or both. The resulting magnetic recording medium has improved running properties, wear resistance and electro-to-magnetic conversion characteristics.
摘要翻译：公开了一种在非磁性基底上形成有薄磁性金属膜的磁记录介质。在薄磁性金属膜或与薄磁性金属膜相反的基体表面上或两者上形成具有偏二氯乙烯和丙烯腈作为重复单元的共聚物的薄膜。所得的磁记录介质具有改进的运行性能，耐磨性和电 - 磁转换特性。

9. 发明授权

US4619868A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US4619868A
公开(公告)日：1986-10-28
申请号：US521808
申请日：1983-08-10
申请人： Tsutomu Okita , Kyoichi Naruo , Hiroshi Hashimoto
发明人： Tsutomu Okita , Kyoichi Naruo , Hiroshi Hashimoto
IPC分类号： C09D5/23 , C09D101/18 , C09D175/00 , C09D175/04 , G11B5/702 , G11B5/70
CPC分类号： G11B5/7026 , G11B5/7022 , G11B5/7023 , Y10S428/90 , Y10T428/31544 , Y10T428/31591 , Y10T428/31935
摘要： A magnetic recording medium comprised of a support having a magnetic layer coated thereon is disclosed. The magnetic layer is comprised of a binder composition having a ferromagnetic powder dispersed therein. The binder composition is cured by an electron beam. The composition is comprised of 50 to 400 parts by weight of a compound having 2 or more acryloyl groups or methacryloyl groups in the molecule and 100 parts by weight of a mixture of 20 to 80 parts by weight of a thermoplastic resin having a thermal deformation temperature of 70.degree. C. or more and 20 to 80 parts by weight of a rubber type resin. The material has excellent electromagnetic properties after repeated use. Further, the medium has high physical strength and excellent wear resistance.
摘要翻译：公开了一种由其上涂覆有磁性层的支撑体组成的磁记录介质。磁性层由其中分散有铁磁粉末的粘合剂组合物组成。粘合剂组合物通过电子束固化。该组合物由分子中具有2个以上丙烯酰基或甲基丙烯酰基的化合物50〜400重量份，20重量份20〜80重量份的热变形温度 70℃以上20〜80重量份的橡胶类树脂。该材料重复使用后具有优异的电磁特性。此外，介质具有高的物理强度和优异的耐磨性。

10. 发明授权

US4560616A Magnetic recording medium having binder cured by electron beam radiation 失效
标题翻译：具有通过电子束辐射固化的粘合剂的磁记录介质
公开(公告)号：US4560616A
公开(公告)日：1985-12-24
申请号：US521797
申请日：1983-08-09
申请人： Tsutomu Okita , Kyoichi Naruo , Hiroshi Hashimoto
发明人： Tsutomu Okita , Kyoichi Naruo , Hiroshi Hashimoto
IPC分类号： C09D5/23 , C09D127/04 , C09D127/06 , C09D175/00 , C09D175/04 , G11B5/702 , G11B5/70
CPC分类号： G11B5/702 , Y10S428/90 , Y10T428/31551 , Y10T428/31935
摘要： A magnetic recording medium comprising a support having coated thereon a magnetic layer is disclosed. The magnetic layer is comprised of a binder composition having ferromagnetic particles dispersed therein. The binder composition is cured by an electron beam and comprises a copolymer, a urethane resin and a compound having two or more acryloyl groups or methacryloyl groups. The copolymer may be a vinyl chloride-vinyl acetate-vinyl alcohol copolymer having a vinyl alcohol content of 1 to 15 wt % or a vinyl chloride-vinyl acetate-maleic acid copolymer having a maleic acid content of 1 to 10 wt %. The recording medium has excellent electromagnetic properties and the magnetic layer has excellent dynamic properties.
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。磁性层由其中分散有铁磁颗粒的粘合剂组合物组成。粘合剂组合物通过电子束固化，并包含共聚物，聚氨酯树脂和具有两个或更多个丙烯酰基或甲基丙烯酰基的化合物。共聚物可以是乙烯醇含量为1〜15重量％的氯乙烯 - 乙酸乙烯酯 - 乙烯醇共聚物或马来酸含量为1〜10重量％的氯乙烯 - 乙酸乙烯酯 - 马来酸共聚物。记录介质具有优良的电磁特性，磁性层具有优异的动态特性。

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