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1. 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。

2. 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。

3. 发明授权

US5145738A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US5145738A
公开(公告)日：1992-09-08
申请号：US331205
申请日：1989-03-31
申请人： Mikihiko Kato , Yasushi Endo , Toshio Kawamata , Yasuo Nishikawa
发明人： Mikihiko Kato , Yasushi Endo , Toshio Kawamata , Yasuo Nishikawa
IPC分类号： C09D5/23 , C10M103/02 , C10M105/34 , C10N40/18 , G11B5/706 , G11B5/708 , G11B5/71
CPC分类号： G11B5/71 , G11B5/70605 , G11B5/708 , Y10S428/90 , Y10T428/265 , Y10T428/30
摘要： A magnetic recording medium comprising a non-magnetic support having thereon a magnetic layer comprising ferromagnetic metal powder and a binder, the magnetic layer further comprising carbon black having an average particle diameter of 250 m.mu. or more in an amount of from 1 to 10 parts by weight per 100 parts by weight of the ferromagnetic metal powder, and an ester of tridecyl alcohol with stearic acid and/or an ester of tridecyl alcohol with palmitic acid in an amount of from 5 to 20 parts by weight per 100 parts by weight of the ferromagnetic metal powder.
摘要翻译：一种磁记录介质，其特征在于，具有非磁性载体，其上具有含有铁磁性金属粉末和粘合剂的磁性层，所述磁性层还含有平均粒径为250μm以上的碳黑，其量为1〜10份的铁硬质金属粉末100重量份，十三烷醇与硬脂酸的酯和/或十三烷醇与棕榈酸的酯的量为每100重量份的5-20重量份铁磁金属粉末。

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

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。

6. 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。

7. 发明授权

US5041336A Magnetic recording medium using a binder resin containing a polar group, and a lubricant system comprising two types of fatty acid esters and one fatty acid 失效
标题翻译：使用含有极性基团的粘合剂树脂的磁记录介质和包含两种脂肪酸酯和一种脂肪酸的润滑剂体系
公开(公告)号：US5041336A
公开(公告)日：1991-08-20
申请号：US251437
申请日：1988-09-30
申请人： Takao Ohya , Yasuo Nishikawa , Akihiro Matsufuji , Akira Kasuga , Kiyomi Ejiri
发明人： Takao Ohya , Yasuo Nishikawa , Akihiro Matsufuji , Akira Kasuga , Kiyomi Ejiri
IPC分类号： C09D5/23 , C09D127/04 , C09D127/06 , C10M105/34 , C10M105/38 , C10N40/18 , G11B5/702 , G11B5/708 , G11B5/71
CPC分类号： G11B5/71 , G11B5/702 , G11B5/7021 , G11B5/7023 , Y10S428/90 , Y10T428/31551 , Y10T428/3158 , Y10T428/31786
摘要： A magnetic recording medium comprising a non-magnetic support having provided thereon a magnetic layer comprising a ferromagnetic powder dispersed in a binder,wherein said binder comprises a polymer containing a polar group selected from --SO.sub.3 M, --OSO.sub.3 M, --COOM, ##STR1## where M represents a hydrogen atom, Li, Na, K or NR.sub.4 where R represents a hydrogen atom or an alkyl group, and M' represents a hydrogen atom, Li, Na, K, an alkyl group or NR.sub.4 where R represents a hydrogen atom or an alkyl group, andsaid magnetic layer contains at least one fatty acid ester compound represented by formula (I), at least one fatty acid ester compound represented by formula (II), and at least one fatty acid having from 11 to 35 carbon atoms: ##STR2## wherein R.sup.1 represents a linear or branched chain hydrocarbon group having from 11 to 35 carbon atoms, R.sup.2 represents a linear or branched chain hydrocarbon group having from 1 to 8 carbon atoms or a phenyl group, X represents a hydrogen atom or a methyl group, and n represents an integer of from 2 to 200; ##STR3## wherein R.sup.3 represents a linear or branched chain hydrocarbon group having from 11 to 35 carbon atoms and R.sup.4 represents a linear or branched chain hydrocarbon group having from 1 to 8 carbon atoms.
摘要翻译：一种包含非磁性载体的磁记录介质，其上设置有包含分散在粘合剂中的铁磁粉末的磁性层，其中所述粘合剂包含含有选自-SO 3 M，-OSO 3 M，-COOM，中的极性基团的聚合物，其中 M表示氢原子，Li，Na，K或NR4，其中R表示氢原子或烷基，M'表示氢原子，Li，Na，K，烷基或NR4，其中R表示氢原子或烷基，所述磁性层含有至少一种由式（I）表示的脂肪酸酯化合物，至少一种由式（II）表示的脂肪酸酯化合物和至少一种具有11至35个碳原子的脂肪酸（Ⅰ）其中R1表示碳原子数为11〜35的直链或支链烃基，R2表示碳原子数为1〜8的直链或支链烃基或苯基，X表示氢原子原子或甲基， n表示2〜200的整数，（II）其中R 3表示具有11至35个碳原子的直链或支链烃基，R 4表示具有1至8个碳原子的直链或支链烃基。

8. 发明授权

US5091270A Magnetic recording medium lubricated by a mixture of methyl branched iso ester compounds synthesized by the oko process 失效
标题翻译：通过由oko方法合成的甲基支链异酯化合物的混合物润滑的磁记录介质
公开(公告)号：US5091270A
公开(公告)日：1992-02-25
申请号：US382880
申请日：1989-07-21
申请人： Takao Ohya , Yasuo Nishikawa , Satoru Hayakawa
发明人： Takao Ohya , Yasuo Nishikawa , Satoru Hayakawa
IPC分类号： G11B5/708 , C09D5/23 , C09D127/04 , C09D127/06 , C09D175/00 , C09D175/04 , G11B5/71 , G11B5/72 , G11B5/725
CPC分类号： G11B5/71 , G11B5/725 , Y10S428/90
摘要： A magnetic recording medium is disclosed, which has a magnetic layer on a non-magnetic support, wherein at least a mixture of ester compounds shown by formula (I) obtained by the reaction of a straight chain or branched fatty acid having from 12 to 30 carbon atoms and branched alcohols having from 10 to 32 carbon atoms synthesized by oxo synthesis is retained in or on the magnetic layer: ##STR1## wherein R.sub.1 represents a straight chain or branched alkyl group having from 11 to 29 carbon atoms or a straight chain or branched alkenyl group having from 11 to 29 carbon atoms, and R.sub.2 represents a branched alkyl group having from 10 to 32 carbon atoms. The magnetic recording medium has an excellent running durability in wide ranges of temperature and humidity condition.
摘要翻译：公开了一种磁性记录介质，其在非磁性载体上具有磁性层，其中至少由式（I）表示的酯化合物的混合物通过具有12至30的直链或支链脂肪酸的反应获得碳原子和通过氧代合成合成的具有10至32个碳原子的支链醇保留在磁性层中或磁性层上：其中R 1表示具有11至29个碳原子的直链或支链烷基或具有11〜29个碳原子的直链或支链烯基，R2表示碳原子数为10〜32的支链烷基。磁记录介质在宽范围的温度和湿度条件下具有优异的运行耐久性。

9. 发明授权

US5030521A Magnetic recording medium using a fatty acid ester lubricant wherein the alcohol component is branched at the number one carbon position 失效
标题翻译：使用脂肪酸酯润滑剂的磁记录介质，其中醇组分在第一碳位分支
公开(公告)号：US5030521A
公开(公告)日：1991-07-09
申请号：US183875
申请日：1988-04-20
申请人： Yasuo Nishikawa , Takao Ohya , Hajime Miyatsuka
发明人： Yasuo Nishikawa , Takao Ohya , Hajime Miyatsuka
IPC分类号： G11B5/708 , C09D5/23 , C09D127/04 , C09D127/06 , C09D131/04 , G11B5/702 , G11B5/71 , G11B5/72 , G11B5/725
CPC分类号： G11B5/71 , G11B5/702
摘要： A magnetic recording medium comprises a nonmagnetic support and a magnetic recording layer containing a ferromagnetic powder which is provided on the support. The magnetic recording layer contains a binder resin having a acid residue or a salt thereof and a fatty acid ester compound having the formula (I): ##STR1## wherein R is a hydrocarbon group having 11-21 carbon atoms, R.sup.1 is hydrogen atom or a hydrocarbon group having 1-3 carbon atoms, and R.sup.2 and R.sup.3 are the same or different and each is a hydrocarbon group having 1-8 carbon atoms. The total number of carbon atoms contained in R.sup.1, R.sup.2 and R.sup.3 being not less than 3 carbon atoms. Alternatively, the fatty acid ester can be coated on the magnetic layer.
摘要翻译：磁记录介质包括非磁性载体和含有设置在载体上的铁磁性粉末的磁记录层。磁记录层含有具有酸残基或其盐的粘合剂树脂和具有式（I）的脂肪酸酯化合物：其中R是具有11-21个碳原子的烃基，R1是氢原子或具有1-3个碳原子的烃基，R2和R3相同或不同，并且各自为具有1-8个碳原子的烃基。 R1，R2和R3中含有的碳原子总数不少于3个碳原子。或者，脂肪酸酯可以涂覆在磁性层上。

10. 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。

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