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1. 发明授权

US4511629A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US4511629A
公开(公告)日：1985-04-16
申请号：US463419
申请日：1983-02-03
申请人： Ryozo Konno , Makio Sugai , Yuichi Kubota , Masaharu Nishimatsu , Yukihiro Isobe , Kazushi Tanaka , Osamu Shinoura
发明人： Ryozo Konno , Makio Sugai , Yuichi Kubota , Masaharu Nishimatsu , Yukihiro Isobe , Kazushi Tanaka , Osamu Shinoura
IPC分类号： C09D5/23 , G11B5/738 , H01F10/00 , B05D5/12
CPC分类号： G11B5/738 , Y10S428/90 , Y10T428/31935
摘要： In a magnetic recording medium made by applying a non-magnetic undercoat and a magnetic top coat on a base, the undercoat comprises a radiation-curable coating material which contains a compound with a molecular weight of not less than 400, having one type of double bond selected from among acrylic, allylic, and maleic double bonds, the undercoat being formed by exposure to radiation. Specifically, the undercoating material contains at least two types of compounds selected from (A) those having a molecular weight of over 5000, preferably over 8000 and having two or more double bonds selected as above, (B) those having a molecular weight of 400 or more but less than 500, preferably in the range of 600 to 3000, and two or more double bonds selected as above, and (C) those having a molecular weight of less than 400 and one or more double bonds selected from among acrylic, allylic, maleic, and styrenic double bonds. At least two types of the compounds are used in a mixing ratio of 0-90 wt % (A), 0-80 wt % (B), and 0-50 wt % wt % (C).
摘要翻译：在通过在基底上施加非磁性底涂层和磁性面漆制成的磁记录介质中，底涂层包含含有分子量不小于400的化合物的辐射固化涂层材料，具有一种类型的双键从丙烯酸，烯丙基和马来双键中选择，底涂层通过暴露于辐射形成。具体地说，底涂层材料含有至少两种选自（A）分子量超过5000，优选超过8000，具有两个以上选自上述双键的化合物，（B）分子量为400 或更多但小于500，优选在600至3000的范围内，以及如上选择的两个或更多个双键，和（C）分子量小于400的那些和选自丙烯酸，烯丙基，马来酸和苯乙烯双键。以0-90重量％（A），0-80重量％（B）和0-50重量％重量（C）的混合比使用至少两种类型的化合物。

2. 发明授权

US4708909A Radiation-curable, magnetic coating material and magnetic recording medium using the same 失效
标题翻译：可辐射固化的磁性涂层材料和使用其的磁记录介质
公开(公告)号：US4708909A
公开(公告)日：1987-11-24
申请号：US933268
申请日：1986-11-19
申请人： Akira Ohtsuki , Ryozo Konno , Nobumori Kanno , Makio Sugai , Takashi Mihoya , Yuichi Kubota , Masaharu Nishimatsu , Yukihiro Isobe , Kazushi Tanaka , Osamu Shinoura
发明人： Akira Ohtsuki , Ryozo Konno , Nobumori Kanno , Makio Sugai , Takashi Mihoya , Yuichi Kubota , Masaharu Nishimatsu , Yukihiro Isobe , Kazushi Tanaka , Osamu Shinoura
IPC分类号： C08F2/00 , C08F2/44 , C08F2/54 , C09D4/00 , C09D5/00 , C09D5/23 , G11B5/702
CPC分类号： G11B5/7026 , Y10S428/90 , Y10T428/31609 , Y10T428/31935
摘要： This invention concerns a radiation-curable, magnetic coating material and a magnetic recording medium made with the coating, which is characterized in that a water-soluble or water-dispersed resin having at least one radiation-curable, unsaturated double is contained as a vehicle. The vehicle may also contain a water-soluble or water-dispersible resin, or mixtures thereof free from such an unsaturated double bond. The invention provides a magnetic recording medium with improved durability, softness, flexibility, and heat resistance.
摘要翻译： PCT No.PCT / JP82 / 00284 Sec。 371日期1983年2月28日 102（e）日期1983年2月28日PCT申请日1982年7月22日PCT公布。第WO83 / 00340号公报日本1983年2月3日。本发明涉及一种可辐射固化的磁性涂层材料和由该涂层制成的磁记录介质，其特征在于具有至少一种可辐射固化的水溶性或水分散的树脂，含有不饱和双酚作为载体。载体还可含有不含这种不饱和双键的水溶性或水分散性树脂或其混合物。本发明提供了具有改善的耐久性，柔软性，柔韧性和耐热性的磁记录介质。

3. 发明授权

US4526837A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US4526837A
公开(公告)日：1985-07-02
申请号：US375261
申请日：1982-04-23
申请人： Akira Ohtsuki , Ryozo Konno , Makio Sugai , Masaharu Nishimatsu , Yuichi Kubota , Kazushi Tanaka , Osamu Shinoura
发明人： Akira Ohtsuki , Ryozo Konno , Makio Sugai , Masaharu Nishimatsu , Yuichi Kubota , Kazushi Tanaka , Osamu Shinoura
IPC分类号： G11B5/702 , C08F2/00 , C08F2/54 , C09D5/23 , G11B5/70 , G11B5/708
CPC分类号： G11B5/7013 , Y10S428/90 , Y10T428/31609 , Y10T428/31935
摘要： This invention provides a magnetic recording medium with excellent electromagnetic characteristics and running durability. According to the invention, a magnetic powder is kneaded with a cross-linkable or polymerizable resin binder, together with a phosphoric ester having a polymerizable, unsaturated double bond or bonds, the resulting coating material is applied to a substrate, and then the coating is cross-linked or polymerized. The addition of the phosphoric ester in place of an ordinary dispersing agent improves the mechanical properties of the magnetic coating and the durability and running quality of the magnetic recording medium.
摘要翻译： PCT No.PCT / JP81 / 00204 Sec。一九八二年四月二十三日 102（e）日期1982年4月23日PCT提交1981年8月28日PCT公布。出版物WO82 / 00914 1982年3月18日。本发明提供具有优异的电磁特性和运行耐久性的磁记录介质。根据本发明，将磁性粉末与可交联或可聚合的树脂粘合剂与具有可聚合的不饱和双键或键合的磷酸酯一起捏合，将所得的涂料施加到基材上，然后将涂层交联或聚合。添加磷酸酯代替普通分散剂可改善磁性涂层的机械性能和磁记录介质的耐久性和运行质量。

4. 发明授权

US4419406A Magnetic recording medium and production thereof 失效
标题翻译：磁记录介质及其制造
公开(公告)号：US4419406A
公开(公告)日：1983-12-06
申请号：US362655
申请日：1982-03-29
申请人： Yukihiro Isobe , Kazushi Tanaka , Masaharu Nishimatsu , Osamu Shinoura , Yuichi Kubota
发明人： Yukihiro Isobe , Kazushi Tanaka , Masaharu Nishimatsu , Osamu Shinoura , Yuichi Kubota
IPC分类号： G11B5/84 , C09D5/23 , C09D127/06 , C09D175/14 , G11B5/73 , G11B5/735 , B32B27/00
CPC分类号： G11B5/7305 , Y10S428/90 , Y10T428/31544
摘要： A magnetic recording medium having a magnetic layer on one surface of a substrate and a back layer on the other surface, which is characterized by that the back layer is that formed by dispering a filler such as carbon black, graphite, SiO.sub.2, TiO.sub.2, Al.sub.2 O.sub.3,Cr.sub.2 O.sub.3, SiC, CeO.sub.2, CaCO.sub.3, zinc oxide, geothite, .alpha.Fe.sub.2 O.sub.3, talc, kaolin, CaSO.sub.4, boron nitride, Teflon powder, graphite fluoride, molybdenum disulfide, zirconia etc. In a binder containing a radiation sensitive curable resin such as acryl-modified vinyl chloride - vinyl acetate - vinyl alcohol copolymer, acryl-modified polyurethane elastomer, acryl-modified polyester resin, etc. and curing it prior to rolling. The obtained back layer is very tough and can reduce the number of dropouts.
摘要翻译：一种磁性记录介质，其在基板的一个表面上具有磁性层，而在另一个表面上具有背层，其特征在于，背层是通过分散诸如炭黑，石墨，SiO 2，TiO 2，Al 2 O 3 ，Cr 2 O 3，SiC，CeO 2，CaCO 3，氧化锌，Geothite，αFe2 O 3，滑石，高岭土，CaSO 4，氮化硼，特氟隆粉末，氟化石墨，二硫化钼，氧化锆等。在含有辐射敏感性固化树脂如丙烯酸改性氯乙烯 - 乙酸乙烯酯 - 乙烯醇共聚物，丙烯酸改性聚氨酯弹性体，丙烯酸改性聚酯树脂等，并在轧制前固化。获得的背层非常坚硬，可以减少辍学次数。

5. 发明授权

US4670340A Magnetic recording medium and method 失效
标题翻译：磁记录介质及方法
公开(公告)号：US4670340A
公开(公告)日：1987-06-02
申请号：US767075
申请日：1985-08-19
申请人： Yukihiro Isobe , Kazushi Tanaka , Masaharu Nishimatsu , Osamu Shinoura , Yuichi Kubota
发明人： Yukihiro Isobe , Kazushi Tanaka , Masaharu Nishimatsu , Osamu Shinoura , Yuichi Kubota
IPC分类号： C09D127/06 , C09D175/14 , G11B5/73 , G11B5/735 , G11B5/84 , B32B5/16
CPC分类号： G11B5/735 , G11B5/84 , Y10S428/90 , Y10T428/269
摘要： The invention provides a method for manufacturing a magnetic recording tape which is free from the problems of the phenomenon of dropout as well as runout of the tape roll throughout the life of the tape. The inventive method comprises providing a coating layer on a surface of a film base of the tape having been provided with the magnetic coating layer on the other surface with a coating composition comprising a radiation-sensitive curable polymeric material, which is a thermoplastic resin modified to be radiation-sensitive with or without admixture of a thermoplastic elastomer, and a filler dispersed therein and, prior to winding of the tape into a roll, irradiating the coating layer with a high energy radiation of, preferably, electron beams whereby the coating composition is fully radiation-cured to form a backing layer of the tape.
摘要翻译：本发明提供了一种制造磁记录带的方法，该磁记录带在纸带的整个使用寿命期间没有脱落现象以及带卷的跳动问题。本发明的方法包括在带的膜基底的表面上提供涂层，该涂层在另一表面上设置有磁性涂层，涂层组合物包含辐射敏感的可固化聚合物材料，该辐射敏感可固化聚合物材料是被修饰成对热塑性弹性体和/或其中分散的填料进行辐射敏感，并且在将带缠绕成卷之前，用优选电子束的高能量辐射照射涂层，由此涂覆组合物为完全辐射固化以形成带的背衬层。

6. 发明授权

US4451531A Magnetic recording medium and method 失效
标题翻译：磁记录介质及方法
公开(公告)号：US4451531A
公开(公告)日：1984-05-29
申请号：US384063
申请日：1982-06-01
申请人： Yukihiro Isobe , Kazushi Tanaka , Masaharu Nishimatsu , Osamu Shinoura , Yuichi Kubota
发明人： Yukihiro Isobe , Kazushi Tanaka , Masaharu Nishimatsu , Osamu Shinoura , Yuichi Kubota
IPC分类号： C09D167/07 , G11B5/708 , G11B5/73 , G11B5/735 , B32B5/16
CPC分类号： G11B5/7085 , Y10S428/90 , Y10T428/252 , Y10T428/256 , Y10T428/257 , Y10T428/266
摘要： The invention provides a novel magnetic recording tape comprising a film base, a magnetic coating layer on one surface and a backing layer on the other surface, the backing layer containing an abrasive powder having a hardness of at least 4 in the Mohs scale, such as silicon carbide and the like, dispersed in a binder matrix formed by curing a radiation-sensitive polymer by irradiating with a high energy radiation, such as electron beams accelerated at a voltage of 100 to 750 kilovolts. Coating of the film base with a coating composition to form the backing layer is performed on the surface of the film base having been provided with the magnetic coating layer on the other surface and the radiation-curing of the backing layer is performed prior to winding the tape into a roll to give a specified tensile modulus so that the magnetic recording tape is freed from the problem of the phenomenon of dropout owing to the absence of any particulate material adhering to the tape surface as is sometimes unavoidable in the conventional manufacturing process. The product tape is also quite free from scratch formation by virtue of the presence of the abrasive powder in the backing layer also contributing to the decrease of dropout.
摘要翻译：本发明提供了一种新颖的磁记录带，其包括膜基底，一个表面上的磁性涂层和另一个表面上的背衬层，该背衬层含有摩尔规格中硬度至少为4的磨料粉末，例如碳化硅等分散在通过用高能辐射照射固化辐射敏感聚合物形成的粘合剂基质中，例如以100-750千伏的电压加速的电子束。在具有在另一表面上设置有磁性涂层的膜基材的表面上进行用涂料组合物涂覆膜基底以形成背衬层，并且背衬层的辐射固化在卷绕之前进行将其卷成卷以提供特定的拉伸模量，使得磁记录带由于没有任何颗粒材料粘附到带表面而免除掉落现象的问题，这在常规制造过程中有时是不可避免的。由于在背衬层中存在磨料粉末，产品胶带也非常没有刮擦形成，也有助于减少脱落。

7. 发明授权

US4415630A Process of making magnetic recording medium 失效
标题翻译：制作磁记录介质的过程
公开(公告)号：US4415630A
公开(公告)日：1983-11-15
申请号：US470180
申请日：1983-02-28
申请人： Yuichi Kubota , Masaharu Nishimatsu , Kazushi Tanaka
发明人： Yuichi Kubota , Masaharu Nishimatsu , Kazushi Tanaka
IPC分类号： G11B5/708 , G11B5/712 , B32B5/16 , H01F10/02
CPC分类号： G11B5/708 , G11B5/712 , Y10S428/90 , Y10T428/2991 , Y10T428/31678 , Y10T428/31855 , Y10T428/31935
摘要： A magnetic recording medium comprises a substrate and a magnetic recording layer formed thereon and which is made of a magnetic coating material consisting essentially of a magnetic powder dispersed in a binder, the coating material containing a titanium coupling agent. The magnetic powder is coated with the coupling agent or is mixed with the agent and then dispersed in the binder. The binder is prepared by mixing and plasticizing a radiation-sensitive modified resin with a radiation-sensitive soft resin and subjecting the mixture to radiation cross-linking and polymerization. Process for producing the medium comprises coating the magnetic particles with the titanium coupling agent, blending the coated particles with the binder to form a magnetic coating material, and then applying the material to the substrate. Alternatively, the process comprises mixing the titanium coupling agent with the magnetic particles, blending the mixture with the binder, and then applying the resulting coating material to the substrate. The titanium coupling agent is used in an amount of 0.5-7 wt %, preferably 0.5-3 wt %, based on the weight of the magnetic powder.
摘要翻译：磁记录介质包括基板和形成在其上的磁记录层，并且由基本上由分散在粘合剂中的磁粉组成的磁性涂层材料制成，所述涂层材料含有钛偶联剂。磁性粉末涂有偶联剂，或与试剂混合，然后分散在粘合剂中。通过将辐射敏感的改性树脂与辐射敏感的软树脂混合和塑化并使混合物进行辐射交联和聚合来制备粘合剂。用于生产介质的方法包括用钛偶联剂涂覆磁性颗粒，将涂覆的颗粒与粘合剂混合以形成磁性涂层材料，然后将该材料施加到基材上。或者，该方法包括将钛偶联剂与磁性颗粒混合，将混合物与粘合剂混合，然后将所得的涂料施用于基材。钛偶联剂的使用量为0.5-7重量％，优选为0.5-3重量％，基于磁粉的重量。

8. 发明授权

US4678708A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US4678708A
公开(公告)日：1987-07-07
申请号：US807825
申请日：1985-12-11
申请人： Shigeru Shimada , Masaharu Nishimatsu , Hiroyuki Arioka , Yuichi Kubota
发明人： Shigeru Shimada , Masaharu Nishimatsu , Hiroyuki Arioka , Yuichi Kubota
IPC分类号： C09D5/23 , C09D127/04 , C09D127/06 , C09D175/04 , C09D175/14 , G11B5/702
CPC分类号： G11B5/7023 , Y10S428/90 , Y10T428/265 , Y10T428/31786 , Y10T428/31797 , Y10T428/31935
摘要： A magnetic recording medium, obtained by preparing a radiation-sensitive curing resin by modification of a copolymer of (A) vinyl chloride, (B) a vinyl carboxylate, (C) an unsaturated carboxylic acid and (D) an unsaturated carboxylic anhydride, containing 50 to 80% by weight of (A) based on the total of (A) and (B), 10 to 30% by weight of (D) based on the total of (C) and (D) and a total of 1 to 5 parts by weight of (C) and (D) based on 100 parts by weight of (A) and (B) and having an average polymerization degree of 100 of 400, and a magnetic powder thereby producing a magnetic paint, applying said magnetic paint to a non-magnetic substrate, and solidifying the resultant coating of paint on said substrate by exposure to radiation.
摘要翻译：通过改变（A）氯乙烯，（B）乙烯基羧酸酯，（C）不饱和羧酸和（D）不饱和羧酸酐的共聚物制备辐射敏感固化树脂得到的磁记录介质，其包含基于（A）和（B）的总和（A）为50〜80重量％，（C）和（D）总计为10〜30重量％（D），总计1 相对于100重量份的（A）和（B），平均聚合度为100的400重量份的（C）和（D）的5重量份，和由此制成磁性涂料的磁性粉末，将磁性涂料涂覆到非磁性基材上，并通过暴露于辐射使所得基材上的涂料固化。

9. 发明授权

US4946729A Resin composition and magnetic recording medium employing the composition 失效
标题翻译：使用该组合物的树脂组合物和磁记录介质
公开(公告)号：US4946729A
公开(公告)日：1990-08-07
申请号：US654364
申请日：1984-09-26
申请人： Masaharu Nishimatsu , Shigeru Shimada , Toshiaki Ide , Hiroyuki Arioka , Yuichi Kubota
发明人： Masaharu Nishimatsu , Shigeru Shimada , Toshiaki Ide , Hiroyuki Arioka , Yuichi Kubota
IPC分类号： C08G18/62 , C08G18/67 , C09D4/00 , C09D5/23 , C09D127/04 , C09D127/06 , C09D175/00 , C09D175/04 , G11B5/64 , G11B5/73 , G11B5/735
CPC分类号： G11B5/735 , C08G18/6212 , C08G18/672 , C09D4/00 , Y10S428/90 , Y10T428/24355 , Y10T428/25 , Y10T428/31609
摘要： A back coating resin composition for a magnetic recording medium comprising:(A) a plastic compound having a molecular weight of from 5,000 to 100,000 and containing at least two radiation-curable unsaturated double bonds;(B) a rubber-like compound having a molecular weight of from 3,000 to 100,000 and containing at least one radiation-curable unsaturated double bond or containing no such double bond; and(C) a compound having a molecular weight of from 200 to 3,000 and containing at least one radiation-curable unsaturated double bond.
摘要翻译：一种用于磁记录介质的背涂树脂组合物，包括：（A）分子量为5,000至100,000并含有至少两个可辐射固化的不饱和双键的塑料化合物; （B）分子量为3,000〜100,000的橡胶状化合物，含有至少一个可辐射固化的不饱和双键或不含这样的双键; 和（C）分子量为200-3000并含有至少一个可辐射固化的不饱和双键的化合物。

10. 发明授权

US4618535A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US4618535A
公开(公告)日：1986-10-21
申请号：US642208
申请日：1984-08-20
申请人： Masaharu Nishimatsu , Toshiaki Ide , Hiroyuki Arioka , Yuichi Kubota
发明人： Masaharu Nishimatsu , Toshiaki Ide , Hiroyuki Arioka , Yuichi Kubota
IPC分类号： C09D175/04 , C09D127/06 , G11B5/64 , G11B5/73 , G11B5/735 , G11B5/72
CPC分类号： G11B5/735 , Y10S428/90 , Y10T428/25 , Y10T428/252 , Y10T428/257 , Y10T428/258 , Y10T428/30 , Y10T428/31609 , Y10T428/31935
摘要： A magnetic recording medium comprising a plastic base film, a thin magnetic metal layer formed on one side of the base film and a backing layer formed on the other side of the base film, characterized in that the backing layer is composed essentially of a thermoset or radiation-cured resin and carbon black and inorganic compound powder uniformly dispersed in the resin, and has a surface roughness of from 0.05 to 0.4 .mu.m, said carbon black having an average particle size of from 10 to 150 m.mu.m as measured by an electron microscope, said inorganic compound powder having a Mohs hardness of at most 6 and a particle size of from 10 to 500 m.mu.m, and the ratio of the carbon black to the inorganic compound powder being from 1:9 to 9:1.
摘要翻译：一种磁记录介质，包括塑料基膜，形成在基膜的一侧上的薄磁性金属层和形成在基膜另一侧上的背衬层，其特征在于背衬层基本上由热固性材料或辐射固化树脂和炭黑和无机化合物粉末均匀分散在树脂中，表面粗糙度为0.05-0.4μm，所述炭黑的平均粒径为10-150μm，通过电子显微镜，所述无机化合物粉末的莫氏硬度至多为6，粒径为10〜500μm，碳黑与无机化合物粉末的比例为1:9〜9:1。

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