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1. 发明授权

US5126215A Magnetic recording medium having a surface with pores of specified average inlet diameter and wide pore size distribution controlled by calender treatment 失效
标题翻译：磁记录介质具有通过压延处理控制的具有规定的平均入口直径和宽孔径分布的孔的表面
公开(公告)号：US5126215A
公开(公告)日：1992-06-30
申请号：US337686
申请日：1989-04-13
申请人： Masashi Aonuma , Hiroaki Araki , Hiroshi Hashimoto , Tsutomu Okita , Yasuo Nishikawa
发明人： Masashi Aonuma , Hiroaki Araki , Hiroshi Hashimoto , Tsutomu Okita , Yasuo Nishikawa
IPC分类号： G11B5/712
CPC分类号： G11B5/712 , Y10S428/90
摘要： A magnetic recording medium comprising a nonmagnetic support having formed thereon a magnetic layer containing ferromagnetic particles dispersed in a binder, wherein the surface of the magnetic layer has pores of (a) at most 50 .ANG. in the average value of pore inlet diameters measured by a nitrogen gas adsorption method and (b) at least 25 .ANG. in the half value width of the frequency distribution curve of the pore inlet diameters.
摘要翻译：一种磁记录介质，包括在其上形成有分散在粘合剂中的铁磁颗粒的磁性层的非磁性载体，其中所述磁性层的表面具有孔（a）至多为50的孔，孔的平均值由氮气吸附法和（b）孔入口直径频率分布曲线半值宽度中至少25 ANGSTROM。

2. 发明授权

US5091268A Magnetic recording medium lubricated by a three component fatty acid ester-fatty acid amide composition 失效
标题翻译：由三组分脂肪酸酯 - 脂肪酸酰胺组合物润滑的磁记录介质
公开(公告)号：US5091268A
公开(公告)日：1992-02-25
申请号：US546183
申请日：1990-06-29
申请人： Yasuo Nishikawa , Akira Kasuga , Tsutomu Okita , Masashi Aonuma
发明人： Yasuo Nishikawa , Akira Kasuga , Tsutomu Okita , Masashi Aonuma
IPC分类号： G11B5/708 , C09D5/23 , C09D127/04 , C09D127/06 , C09D175/06 , C10M105/34 , C10M105/68 , C10N40/18 , G11B5/71 , G11B5/725 , G11B5/73
CPC分类号： G11B5/725 , G11B5/71 , Y10S428/90
摘要： A novel magnetic recording medium is provided comprising a non-magnetic support having provided thereon a magnetic layer comprising a ferromagnetic powder dispersed in a binder, wherein at least one fatty acid amide compound represented by formula (I), at least one fatty acid ester represented by formula (II) and at least one fatty acid ester represented by formula (III) are provided in or on the magnetic layer: ##STR1## wherein R.sup.1 represents a C.sub.13-21 straight-chain saturated hydrocarbon group; ##STR2## wherein R.sup.2 represents a C.sub.12-21 straight-chain or branched saturated or unsaturated hydrocarbon group; and R.sup.3 represents a C.sub.1-10 straight-chain or branched saturated or unsaturated hydrocarbon group; ##STR3## wherein R.sup.4 represents a C.sub.12-21 straight-chain or branched saturated or unsaturated hydrocarbon group; R.sup.5 represents a C.sub.2-3 divalent hydrocarbon group; R.sup.6 represents a C.sub.1-10 straight-chain or branched saturated or unsaturated hydrocarbon group; and n represents an integer of from 1 to 10 where n may be the same or different when the magnetic layer contains two or more compounds represented by formula (III).
摘要翻译：提供了一种新颖的磁记录介质，其包括非磁性载体，其上设置有包含分散在粘合剂中的铁磁粉末的磁性层，其中至少一种由式（I）表示的脂肪酸酰胺化合物，至少一种脂肪酸酯代表通过式（II）和至少一种由式（III）表示的脂肪酸酯提供在磁性层中或其上：其中R1表示C13-21直链饱和烃基; （II）其中R2代表C12-21直链或支链饱和或不饱和烃基; 并且R 3表示C 1-10直链或支链饱和或不饱和烃基; 其中R4代表C12-21直链或支链饱和或不饱和烃基; R5表示C2-3二价烃基; R6表示C1-10直链或支链饱和或不饱和烃基; n表示1〜10的整数，其中当磁性层含有两种或更多种由式（III）表示的化合物时，n可以相同或不同。

3. 发明授权

US5049448A Magnetic recording medium containing an ester lubricant branched from the number 2 carbon position of the acid residue 失效
标题翻译：含有从酸残基的2碳位分支的酯润滑剂的磁记录介质
公开(公告)号：US5049448A
公开(公告)日：1991-09-17
申请号：US383514
申请日：1989-07-24
申请人： Takao Ohya , Yasuo Nishikawa , Jun Nakagawa , Fusao Yamanaka , Toshio Kawamata , Tsutomu Okita , Hiroshi Hashimoto , Mikihiko Kato
发明人： Takao Ohya , Yasuo Nishikawa , Jun Nakagawa , Fusao Yamanaka , Toshio Kawamata , Tsutomu Okita , Hiroshi Hashimoto , Mikihiko Kato
IPC分类号： C09D5/23 , G11B5/71 , G11B5/725
CPC分类号： G11B5/725 , G11B5/71 , Y10S428/90 , Y10T428/31 , Y10T428/31605 , Y10T428/31609
摘要： A magnetic recording medium is disclosed, comprising a nonmagnetic support having thereon a magnetic layer, wherein at least one of ester compounds represented by formula (I) is present in or on the magnetic layer, ##STR1## wherein R.sub.1 represents a straight chain, saturated alkyl group having 6 to 12 carbon atoms, R.sub.2 represents a straight chain, saturated alkyl group having 4 to 10 carbon atoms, and R represents a branched or straight chain alkyl group having 4 to 22 carbon atoms.
摘要翻译：公开了一种磁记录介质，其包括其上具有磁性层的非磁性载体，其中至少一种由式（I）表示的酯化合物存在于磁性层中或其上，其中R1表示直链具有6〜12个碳原子的链状饱和烷基，R2表示直链，碳原子数4〜10的饱和烷基，R表示碳原子数为4〜22的支链或直链烷基。

4. 发明授权

US5045351A Process for producing a magnetic recording medium 失效
标题翻译：磁记录介质的制造方法
公开(公告)号：US5045351A
公开(公告)日：1991-09-03
申请号：US423290
申请日：1989-10-18
申请人： Tsutomu Okita , Yasuo Nishikawa , Hiroshi Hashimoto , Hideomi Watanabe
发明人： Tsutomu Okita , Yasuo Nishikawa , Hiroshi Hashimoto , Hideomi Watanabe
IPC分类号： G11B5/702
CPC分类号： G11B5/7022
摘要： A process for producing a magnetic recording medium which comprises a step of kneading a ferromagnetic powder with a binder in the presence of a solvent, a step of dispersing the resulting blend with the binder and/or solvent, and a step of coating the resulting magnetic coating composition on a nonmagnetic support followed by drying;Wherein said step of kneading is carried out by kneading a ferromagnetic powder having a particle size of not more than 350 .ANG. with a glycidyl compound and a binder comprising at least a vinyl chloride copolymer having an OH- terminated side chain bonded via an organic group and also having a polar group and/or a solvent; said binder, polyurethane resin, and solvent being used in a total amount of from 40 to 70 parts by weight per 100 parts by weight of said ferromagnetic powder; and wherein said step of dispersing is carried out in the presence of additional polyurethane resin having a polar group and/or solvent.
摘要翻译：一种制造磁记录介质的方法，包括在溶剂存在下将铁磁性粉末与粘合剂混合的步骤，用粘合剂和/或溶剂分散所得共混物的步骤，以及涂覆所得磁性涂覆组合物在非磁性载体上，然后干燥; 其中所述捏合步骤是通过将具有不超过350埃格姆的粒度的铁磁性粉末与缩水甘油基化合物和包含至少一种具有通过有机基团键合有OH-封端的侧链的氯乙烯共聚物的粘合剂进行的，以及也具有极性基团和/或溶剂; 所述粘合剂，聚氨酯树脂和溶剂的使用总量为每100重量份所述铁磁粉末为40至70重量份; 并且其中所述分散步骤在具有极性基团和/或溶剂的另外的聚氨酯树脂的存在下进行。

5. 发明授权

US5258231A Magnetic recording medium having ferromagnetic powder, a binder containing a specified vinyl chloride copolymer, polar group containing polyurethane resin and a fatty acid amide 失效
标题翻译：具有铁磁粉末的磁记录介质，含有特定氯乙烯共聚物的粘合剂，含极性基团的聚氨酯树脂和脂肪酸酰胺
公开(公告)号：US5258231A
公开(公告)日：1993-11-02
申请号：US908916
申请日：1992-07-02
申请人： Tsutomu Okita , Yasuo Nishikawa , Hiroshi Hashimoto , Hideomi Watanabe
发明人： Tsutomu Okita , Yasuo Nishikawa , Hiroshi Hashimoto , Hideomi Watanabe
IPC分类号： G11B5/702 , G11B5/00
CPC分类号： G11B5/7022 , Y10S428/90 , Y10T428/31609 , Y10T428/31935
摘要： A magnetic recording medium comprising a non-magnetic support having provided thereon a magnetic layer comprising a ferromagnetic powder and a binder material, wherein the magnetic layer contains at least a vinyl chloride copolymer binder having at least one polar group selected from --SO.sub.3 M and --COOM, wherein M represents a hydrogen atom, an alkali metal, or an ammonium ion, and at least one epoxy group per molecule in an amount of 1.times.10.sup.-4 to 1.times.10.sup.-2 per gram, and a fatty acid amide having from 12 to 26 atoms and present in an amount of from 0.05 to 2 wt % based on the amount of the ferromagnetic powder, and wherein the content of the polar group in the vinyl chloride copolymer binder is from about 1.times.10.sup.-7 to 1.times.10.sup.-3 equivalent per gram, and wherein the vinyl chloride copolymer binder has a weight average molecular weight of from 20,000 to 100,000 and wherein the magnetic layer further contains a polyurethane resin having a polar group.
摘要翻译：一种磁记录介质，包括非磁性载体，其上设置有包含铁磁性粉末和粘合剂材料的磁性层，其中所述磁性层至少含有具有至少一个选自-SO 3 M和-COOM的极性基团的氯乙烯共聚物粘合剂，其中M表示氢原子，碱金属或铵离子，每分子中至少一个环氧基团的量为1×10 -4至1×10 -2 /克，具有12至26个原子的脂肪酸酰胺并且以铁磁粉末的量计为0.05-2重量％，其中氯乙烯共聚物粘合剂中极性基团的含量为每克约1×10-7至1×10-3当量，其中所述氯乙烯共聚物粘合剂的重均分子量为20,000至100,000，并且其中所述磁性层还含有具有极性基团的聚氨酯树脂。

6. 发明授权

US5061564A Magnetic recording medium comprising a polar group containing resin or compound and a methyl iso ester lubricant prepared from a methyl iso acid or methyl iso alcohol or both 失效
标题翻译：包含含有极性基团的树脂或化合物的磁记录介质和由甲基异酸或甲基异丙醇或两者制备的甲基异酯润滑剂
公开(公告)号：US5061564A
公开(公告)日：1991-10-29
申请号：US382934
申请日：1989-07-21
申请人： Takao Ohya , Jun Nakagawa , Satoru Hayakawa , Yasuo Nishikawa , Tsutomu Okita , Hiroshi Hashimoto
发明人： Takao Ohya , Jun Nakagawa , Satoru Hayakawa , Yasuo Nishikawa , Tsutomu Okita , Hiroshi Hashimoto
IPC分类号： G11B5/71 , G11B5/72
CPC分类号： G11B5/71 , G11B5/72 , Y10S428/90 , Y10T428/31 , Y10T428/31551 , Y10T428/3158
摘要： A magnetic recording medium is disclosed, which comprises a non-magnetic support having provided thereon a magnetic layer mainly composed of a ferromagnetic powder and a binder resin comprising (i) a polymer having at least one polar group selected from --SO.sub.3 M.sup.1, --OSO.sub.3 M.sup.1, --COOM.sup.1, ##STR1## wherein M.sup.1 represents a hydrogen atom, Li, Na or NR.sub.4 (wherein R represents a hydrogen atom, an alkyl group, an alkenyl group, or an alkanol group), and M.sup.2 represents a hydrogen atom, Li, Na, an alkyl group, or NR.sub.4 (wherein R has the same significance as defined above); or (ii) a compound having at least one polar group selected from --SO.sub.3 M.sup.3, --COOM.sup.3, and --PO.sub.3 (M.sup.3).sub.2 (wherein M.sup.3 represents a hydrogen atom, an alkali metal, or an ammonium group) and containing at least one carbon-carbon unsaturated bond in the molecule, said magnetic layer containing at least one ester compound represented by following formula (I), (II), or (III), and when the binder resin comprises the compound (ii), the magnetic layer is irradiated by radiations: ##STR2## wherein R.sup.1 represents a straight chain or branched alkyl group having from 7 to 29 carbon atoms or a straight chain or branched alkenyl group having from 7 to 29 carbon atoms; l, k, m, and n represents an integer; l and n each is at least 2, and the sum of n and m and the sum of k and l are from 7 to 33.
摘要翻译：公开了一种磁记录介质，其包括其上设置有主要由铁磁粉末和粘合剂树脂构成的磁性层的非磁性载体，所述磁性层包含（i）具有至少一个选自-SO 3 M 1，-OSO 3 M 1， -COOM1，其中M1表示氢原子，Li，Na或NR4（其中R表示氢原子，烷基，烯基或链烷醇基），M2表示氢原子，Li，Na ，烷基或NR4（其中R具有与上述相同的含义）; 或（ii）具有选自-SO 3 M 3，-COOM 3和-PO 3（M3）2中的至少一个极性基团的化合物（其中，M3表示氢原子，碱金属或铵基），并且含有至少一个碳所述磁性层含有至少一种由下式（I），（II）或（III）表示的酯化合物，并且当粘合剂树脂包含化合物（ii）时，磁性层为（I）其中R1表示具有7至29个碳原子的直链或支链烷基或具有7个碳原子的直链或支链烯基至29个碳原子; l，k，m，n表示整数; l和n各自为至少2，n和m之和以及k和l之和为7至33。

7. 发明授权

US4693927A 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：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。

8. 发明授权

US5051318A Magnetic recording medium containing an organic silicone compound having branched chaw saturated hydrocarbon groups 失效
标题翻译：含有具有分支链饱和烃基的有机硅氧烷化合物的磁记录介质
公开(公告)号：US5051318A
公开(公告)日：1991-09-24
申请号：US423289
申请日：1999-10-18
申请人： Yasuo Nishikawa , Tsutomu Okita
发明人： Yasuo Nishikawa , Tsutomu Okita
IPC分类号： G11B5/708 , C09D5/23 , C09D7/12 , C10M105/76 , C10M107/50 , C10N40/18 , G11B5/71
CPC分类号： G11B5/71 , Y10S428/90 , Y10T428/31663
摘要： A magnetic recording medium is disclosed, which comprises a non-magnetic support having thereon a magnetic layer comprising ferromagnetic particles dispersed in a binder, said magnetic layer containing an organic silicone compound modified with a branched chain saturated fatty acid, and represented by formula (I): ##STR1## wherein R, R', and R" each represents a branched chain saturated hydrocarbon group having 7 to 24 carbon atoms; m represents an integer of 1 to 100; n represents an integer of 0 to 250; m+n.ltoreq.300; and m.gtoreq.n/5.
摘要翻译：公开了一种磁记录介质，其包括其上具有包含分散在粘合剂中的铁磁颗粒的磁性层的非磁性载体，所述磁性层含有用支链饱和脂肪酸改性的有机硅氧烷化合物，并且由式（I ）：其中R，R'和R“各自表示具有7至24个碳原子的支链饱和烃基; m表示1〜100的整数， n表示0〜250的整数， m + n <= 300; 和m> / = n / 5。

9. 发明授权

US4711809A Magnetic recording medium 失效
标题翻译：磁记录介质
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。

10. 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。

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