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1. 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。

2. 发明授权

US5082733A Magnetic recording medium containing magnetic particles surface treated with a glycidyl compound 失效
标题翻译：含有用缩水甘油基化合物表面处理的磁性颗粒的磁记录介质
公开(公告)号：US5082733A
公开(公告)日：1992-01-21
申请号：US340617
申请日：1989-04-18
申请人： Hideomi Watanabe , Mikio Ohno , Hiroshi Hashimoto , Tsutomu Okita
发明人： Hideomi Watanabe , Mikio Ohno , Hiroshi Hashimoto , Tsutomu Okita
IPC分类号： G11B5/842 , G11B5/712
CPC分类号： G11B5/712 , Y10S428/90 , Y10T428/2991 , Y10T428/2998
摘要： A method for preparing a magnetic recording medium is disclosed, comprising the steps of (1) surface-treating ferromagnetic particles with a glycidyl compound having a molecular weight of 1,000 or less and having an epoxy equivalent of 200 g/eq. or less, (2) dispersing the surface-treated ferromagnetic particles with a binder to prepare a magnetic coating composition, (3) coating the resulting magnetic coating composition on a nonmagnetic support, and then (4) drying the magnetic coating composition.
摘要翻译：公开了一种制备磁记录介质的方法，包括以下步骤：（1）用分子量为1,000或更小的环氧当量为200g / eq的缩水甘油基化合物对铁磁颗粒进行表面处理。（2）用粘合剂分散表面处理的铁磁颗粒以制备磁性涂料组合物，（3）将所得磁性涂料组合物涂布在非磁性载体上，然后（4）干燥磁性涂料组合物。

3. 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。

4. 发明授权

US5612134A Magnetic recording medium having a carbon protective layer and a fluoro-lubricant supplied from a backcoat layer 失效
标题翻译：具有碳保护层和从后涂层供应的氟润滑剂的磁记录介质
公开(公告)号：US5612134A
公开(公告)日：1997-03-18
申请号：US687796
申请日：1996-07-19
申请人： Tsutomu Okita , Hideomi Watanabe , Toshio Ishida , Masaki Satake , Hiroshi Hashimoto
发明人： Tsutomu Okita , Hideomi Watanabe , Toshio Ishida , Masaki Satake , Hiroshi Hashimoto
IPC分类号： C10M169/04 , C10M101/00 , C10M105/52 , C10M131/12 , C10M135/10 , C10M137/02 , C10M137/04 , C10N30/06 , C10N40/18 , G11B5/66 , G11B5/71 , G11B5/72 , G11B5/725 , G11B5/735 , G11B5/84
CPC分类号： G11B5/72 , G11B5/725 , G11B5/735 , G11B5/8408 , Y10S428/90 , Y10T428/265 , Y10T428/30 , Y10T428/3154 , Y10T428/31544 , Y10T428/31678
摘要： A magnetic recording medium having a ferromagnetic metal thin film on at least one surface of a non-magnetic support. The magnetic recording medium has a surface layer containing at least either one of fluorine compounds represented by the following formulae (1) and (2):Rf-R.sub.1 Formula (1)Rf-R.sub.2 -Rf Formula (2)whereRf: (CF.sub.3).sub.a CF.sub.3-a (CF.sub.2).sub.ba: 1 to 3a+b: 1 to 11R.sub.1 : an alkyl or alkenyl group having from 8 to 26 carbon atomsR.sub.2 : an alkylene or alkenylene group having from 2 to 14 carbon atoms.The surface layer may be formed on a carbon film provided on the ferromagnetic metal thin film. The surface layer may further contain a fluorine compound having at least one polar group and a perfluoroalkyl group, and a rust inhibitor. These components may be contained in or coated on a back coat layer. The magnetic recording medium is excellent in running properties, durability and shelf stability.
摘要翻译：一种在非磁性载体的至少一个表面上具有强磁性金属薄膜的磁记录介质。磁记录介质具有含有下述式（1）和（2）表示的氟化合物中的至少一种的表面层：Rf-R1式（1）Rf-R2-Rf式（2）其中Rf：（CF3 ）aCF3-a（CF2）ba：1至3a + b：1至11 R1：具有8至26个碳原子的烷基或烯基R2：具有2至14个碳原子的亚烷基或亚烯基。表面层可以形成在设置在强磁性金属薄膜上的碳膜上。表面层还可以含有具有至少一个极性基团和全氟烷基的氟化合物和防锈剂。这些组分可以包含在或涂覆在背涂层上。磁记录介质的运行性能，耐久性和货架稳定性优异。

5. 发明授权

US5153071A Magnetic recording medium wherein the magnetic layer has as the binder system a vinyl chloride copolymer and a polyether polyurethane resin which contains a ring structure 失效
标题翻译：磁性记录介质，其中磁性层具有作为粘合剂体系的氯乙烯共聚物和含有环结构的聚醚聚氨酯树脂
公开(公告)号：US5153071A
公开(公告)日：1992-10-06
申请号：US707971
申请日：1991-05-23
申请人： Hideomi Watanabe , Tsutomu Okita , Hiroshi Hashimoto
发明人： Hideomi Watanabe , Tsutomu Okita , Hiroshi Hashimoto
IPC分类号： C08L75/08 , G11B5/702
CPC分类号： G11B5/7022 , C08L75/08 , Y10S428/90 , Y10T428/3158 , Y10T428/31609
摘要： A magnetic recording medium comprising a non-magnetic support having thereon a magnetic layer comprising ferromagnetic particles disposed in a binder, the binder comprising a vinyl chloride copolymer and a polyurethane resin, wherein the polyurethane resin is a polyether polyurethane resin containing a polyether polyol having a ring structure.
摘要翻译：一种包含非磁性载体的磁记录介质，其上具有包含设置在粘合剂中的铁磁颗粒的磁性层，所述粘合剂包括氯乙烯共聚物和聚氨酯树脂，其中所述聚氨酯树脂是含有聚醚多元醇的聚醚聚氨酯树脂，环结构。

6. 发明授权

US4886703A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US4886703A
公开(公告)日：1989-12-12
申请号：US183105
申请日：1988-04-19
申请人： Kazuo Hasumi , Hideomi Watanabe , Tsutomu Okita , Katsumi Ryoke , Hideaki Kosha
发明人： Kazuo Hasumi , Hideomi Watanabe , Tsutomu Okita , Katsumi Ryoke , Hideaki Kosha
IPC分类号： G11B5/702 , C09D5/23 , C09D127/04 , C09D127/06 , C09D175/00 , C09D175/04 , G11B5/64 , G11B5/73 , G11B5/735
CPC分类号： G11B5/735 , Y10S428/90 , Y10T428/25 , Y10T428/257 , Y10T428/265 , Y10T428/30
摘要： A magnetic recording medium comprising a support having provided on one surface thereof a magnetic layer comprising a binder and ferromagnetic particles dispersed therein, and on the opposite surface thereof a backing layer comprising a binder and non-magnetic particles dispersed therein, wherein at least one of the binders comprises a vinyl chloride copolymer resin having a vinyl chloride unit content of about 70 wt % or more based on the total amount of the binder, a nitrogen content of about from 0.01 to 1 wt % based on the total amount of the binder, and a polymerization degree of about from 250 to 700; and the non-magnetic particles comprises fine carbon particles having a DBP oil absorption of about 150 ml/100 g or more.
摘要翻译：一种磁记录介质，包括在其一个表面上设置有包含粘合剂和分散在其中的铁磁性颗粒的磁性层的支撑体，并且在其相对表面上具有包含粘合剂和分散在其中的非磁性颗粒的背衬层，其中至少一个粘合剂包含基于粘合剂总量为约70重量％以上的氯乙烯单元含量的氯乙烯共聚物树脂，相对于粘合剂的总量，氮含量为约0.01〜1重量％聚合度约为250〜700; 非磁性粒子包含DBP吸油量为150ml / 100g以上的细小碳粒子。

7. 发明授权

US5098783A Magnetic recording medium having a backcoat layer comprising non-magnetic particles dispersed in a vinyl copolymer containing a dialkylaminoalkyl group 失效
标题翻译：磁记录介质具有包含分散在含有二烷基氨基烷基的乙烯基共聚物中的非磁性颗粒的背涂层
公开(公告)号：US5098783A
公开(公告)日：1992-03-24
申请号：US228421
申请日：1988-08-05
申请人： Hideomi Watanabe , Tsutomu Okita
发明人： Hideomi Watanabe , Tsutomu Okita
IPC分类号： C09D5/23 , G11B5/73 , G11B5/735
CPC分类号： G11B5/735 , Y10S428/90 , Y10T428/25 , Y10T428/265 , Y10T428/2982 , Y10T428/3158
摘要： A magnetic recording medium comprising a non-magnetic support having on one surface thereof a magnetic layer and on the opposite surface thereof a backing layer comprising non-magnetic particles dispersed in a binder containing a copolymer of (a) at least one of a vinyl monomer containing a dialkylaminoalkyl group and a vinyl monomer containing a quaternary salt of a dialkylaminoalkyl group, and (b) a copolymerizable vinyl monomer.
摘要翻译：一种磁记录介质，包括在其一个表面上具有磁性层的非磁性载体，并且在其相对表面上具有包含分散在包含（a）乙烯基单体含有二烷基氨基烷基和含有二烷基氨基烷基的季盐的乙烯基单体，和（b）可共聚的乙烯基单体。

8. 发明授权

US5068145A Magnetic recording medium in which the magnetic layer contains a vinyl compound having an inner salt of an alkyl amino alkyl group 失效
标题翻译：磁性记录介质，其中磁性层含有具有烷基氨基烷基的内部盐的乙烯基化合物
公开(公告)号：US5068145A
公开(公告)日：1991-11-26
申请号：US192792
申请日：1988-05-10
申请人： Hideomi Watanabe , Tsutomu Okita
发明人： Hideomi Watanabe , Tsutomu Okita
IPC分类号： C09D5/23 , C09D127/04 , C09D127/06 , C09D175/14 , G11B5/702
CPC分类号： G11B5/7023 , G11B5/7026 , Y10S428/90 , Y10T428/25 , Y10T428/31609
摘要： A magnetic recording medium comprising a non-magnetic support having provided thereon a magnetic layer comprising a binder and ferromagnetic particles dispersed therein, wherein the magnetic layer further contains a vinyl compound having an inner salt of an alkylaminoalkyl group and the magnetic layer has been irradiated with radiation.
摘要翻译：一种磁记录介质，包括其上设置有包含粘合剂和分散在其中的铁磁性颗粒的磁性层的非磁性载体，其中所述磁性层还包含具有烷基氨基烷基的内盐的所述乙烯基化合物，并且所述磁性层已经被辐射。

9. 发明授权

US4686149A Magnetic recording medium and method of preparing 失效
标题翻译：磁记录介质及其制备方法
公开(公告)号：US4686149A
公开(公告)日：1987-08-11
申请号：US831784
申请日：1986-02-21
申请人： Masashi Aonuma , Hideomi Watanabe , Takahito Miyoshi , Tsutomu Okita
发明人： Masashi Aonuma , Hideomi Watanabe , Takahito Miyoshi , Tsutomu Okita
IPC分类号： G11B5/842 , B05D5/12 , C09D109/06 , G11B5/702 , G11B5/73 , G11B5/738 , B32B27/08
CPC分类号： G11B5/7023 , G11B5/7026 , Y10S428/90 , Y10T428/31855 , Y10T428/31935
摘要： A method is described for preparing a magnetic recording medium comprising a non-magnetic support having provided thereon a magnetic layer containing a compound which is cross-linkable or polymerizable by radiation exposure, which comprises conducting a corona discharge treatment on a surface of a support, coating an aqueous dispersion of hydrophobic polymer on the surface of the support to form an undercoat layer, providing a magnetic layer on the undercoat layer, and exposing the magnetic layer to radiation.
摘要翻译：描述了一种用于制备磁记录介质的方法，该磁记录介质包括非磁性载体，其上设置有含有可通过辐射曝光可交联或可聚合的化合物的磁性层，该磁性层包括在载体表面上进行电晕放电处理，将疏水聚合物的水性分散体涂覆在载体的表面上以形成底涂层，在底涂层上提供磁性层，并将磁性层暴露于辐射。

10. 发明授权

US5567524A Magnetic recording medium having a cobalt thin film magnetic layer, carbon protective layer, and fluorolubricant layer 失效
标题翻译：具有钴薄膜磁性层，碳保护层和氟润滑剂层的磁记录介质
公开(公告)号：US5567524A
公开(公告)日：1996-10-22
申请号：US379931
申请日：1995-01-27
申请人： Toshio Ishida , Masaki Satake , Hideomi Watanabe , Tadashi Yasunaga , Tsutomu Okita
发明人： Toshio Ishida , Masaki Satake , Hideomi Watanabe , Tadashi Yasunaga , Tsutomu Okita
IPC分类号： G11B5/66 , C10M105/54 , C10N40/18 , G11B5/64 , G11B5/65 , G11B5/72 , G11B5/725 , G11B5/735
CPC分类号： G11B5/725 , Y10S428/90 , Y10T428/30 , Y10T428/3154 , Y10T428/31678
摘要： A magnetic recording medium having a ferromagnetic metal thin film formed over at least one surface of a non-magnetic support, wherein the improvement has a lubricant layer consisting essentially of at least one of unsaturated bond-containing fluoroalkyl carboxylic acid esters which are represented by the following formulae (1) to (3):Rf--R.sub.1 --COO--R.sup.2 Formula (1)R.sup.3 --COO--R.sub.4 --Rf Formula (2)Rf--R.sup.5 --COO--R.sup.6 Rf Formula (3)where Rf: (CF.sub.3).sub.a CF.sub.3-a (CF.sub.2).sub.ba: 1 to 3 a+b: 1 to 17R.sup.1 is an alkyl group having from 2 to 18 carbon atoms, or a hydrocarbon group having from 2 to 18 carbon atoms and containing at least one double or triple bond, and R.sup.2 is an alkyl group having from 4 to 22 carbon atoms, or a hydrocarbon group having from 4 to 22 carbon atoms and containing at least one double or triple bond. At least either one of R.sup.1 and R.sup.2 contains at least one double or triple bond. R.sup.3 is an alkyl group having from 3 to 21 carbon atoms, and R.sup.4 is a hydrocarbon group having from 4 to 18 carbon atoms and containing at least one double or triple bond. R.sup.5 and R.sup.6 are each an alkyl group having from 2 to 18 carbon atoms, or a hydrocarbon group having from 2 to 18 carbon atoms and containing at least one double or triple bond. At least either one of R.sup.5 and R.sup.6 contains at least one double or triple bond. R.sup.5 and R.sup.6 have from 20 to 44 carbon atoms in total.
摘要翻译：一种具有在非磁性载体的至少一个表面上形成的强磁性金属薄膜的磁记录介质，其中所述改进具有基本上由至少一种含不饱和键的氟烷基羧酸酯组成的润滑层，所述不饱和键的氟烷基羧酸酯由（1）至（3）：Rf-R1-COO-R2（1）R3-COO-R4-Rf（2）Rf-R5-COO-R6RfFormula（3）其中Rf：（CF3）aCF3-a CF 2）ba：1〜3 a + b：1〜17 R 1为碳原子数2〜18的烷基或碳原子数为2〜18的含有至少一个双键或三键的烃基，R 2 是具有4至22个碳原子的烷基或具有4至22个碳原子并且含有至少一个双键或三键的烃基。 R1和R2中至少有一个含有至少一个双键或三键。 R3是具有3至21个碳原子的烷基，R4是具有4至18个碳原子并含有至少一个双键或三键的烃基。 R 5和R 6各自为具有2至18个碳原子的烷基或具有2至18个碳原子且含有至少一个双键或三键的烃基。 R5和R6中的至少一个含有至少一个双键或三键。 R5和R6总共具有20至44个碳原子。

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