公开(公告)号：US4454202A

公开(公告)日：1984-06-12

申请号：US315555

申请日：1981-10-27

申请人： Shigeo Komine ,  Kazuhiko Morita ,  Nobuo Tsuji

发明人： Shigeo Komine ,  Kazuhiko Morita ,  Nobuo Tsuji

IPC分类号： C08L75/04 ,  C09D5/23 ,  G11B5/702 ,  G11B5/70

CPC分类号： G11B5/7022 ,  C08L75/04 ,  Y10S428/90 ,  Y10T428/31511 ,  Y10T428/31551 ,  Y10T428/31565 ,  Y10T428/31786 ,  Y10T428/31935

摘要： A magnetic recording medium having a magnetic paint applied to a base is disclosed. The magnetic paint contains a three-component binder which comprises 30 to 70% of polyurethane having a terminal OH group, 10 to 50% of an epichlorohydrin/diphenylolpropane polycondensate and 10 to 50% of a vinyl chloride/vinyl acetate copolymer, vinyl chloride/vinyl acetate/maleic acid copolymer or vinyl chloride/vinyl acetate/vinyl alcohol copolymer, the percentage being based on the weight of the binder.

摘要翻译： 公开了一种具有施加到基座上的磁性涂料的磁记录介质。 磁性漆包含三组分粘合剂，其包含30至70％的具有末端OH基团的聚氨酯，10至50％的表氯醇/二苯基丙烷缩聚物和10至50％的氯乙烯/乙酸乙烯酯共聚物，氯乙烯/ 乙酸乙烯酯/马来酸共聚物或氯乙烯/乙酸乙烯酯/乙烯醇共聚物，其百分比基于粘合剂的重量。

公开(公告)号：US4857402A

公开(公告)日：1989-08-15

申请号：US33704

申请日：1987-04-03

申请人： Yasuo Nishikawa ,  Hajime Miyazuka ,  Nobuo Tsuji

发明人： Yasuo Nishikawa ,  Hajime Miyazuka ,  Nobuo Tsuji

IPC分类号： G11B5/708 ,  C09D5/23 ,  G11B5/71

CPC分类号： G11B5/71 ,  Y10S428/90 ,  Y10T428/265

摘要： A magnetic recording medium comprising a non-magnetic support having provided thereon a magnetic layer containing ferromagnetic particles and a binder, wherein the magnetic layer contains at least one lubricating agent selected from the group consisting of a salt of a sulfonic acid and a salt of sulfuric acid ester.

摘要翻译： 一种磁记录介质，包括在其上设置有包含铁磁颗粒和粘合剂的磁性层的非磁性载体，其中所述磁性层含有至少一种选自磺酸盐和硫酸盐的润滑剂 酸酯。

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。

公开(公告)号：US4576866A

公开(公告)日：1986-03-18

申请号：US592671

申请日：1984-03-23

申请人： Tsutomu Okita ,  Nobuo Tsuji ,  Yoshito Mukaida

发明人： Tsutomu Okita ,  Nobuo Tsuji ,  Yoshito Mukaida

IPC分类号： C08L75/16 ,  C09D5/23 ,  C09D101/18 ,  C09D127/04 ,  C09D127/06 ,  C09D175/04 ,  G11B5/702 ,  G11B5/70

CPC分类号： G11B5/7026 ,  C08L75/16 ,  G11B5/7022 ,  Y10S428/90 ,  Y10T428/265 ,  Y10T428/31609 ,  Y10T428/31935

摘要： There is provided a magnetic recording material which comprises a support and a magnetic layer coated thereon. The magnetic layer contains as its binder, a combination of at least one vinyl chloride-vinyl acetate-based copolymer characterized by its --CO.sub.2 H content or cellulose dinitrate, at least one urethane acrylate having a particular chemical structure, and at least one low molecular weight compound having two or more acryloyl or methacryloyl groups. The magnetic layer is hardened by beam irradiation. Thus, marked increase in dispersibility of ferromagnetic powders, improvement in electromagnetic transformation characteristics and sharp increase in durability are attained.

摘要翻译： 提供了一种磁记录材料，其包括载体和涂覆在其上的磁性层。 磁性层包含作为其粘合剂的至少一种以其-CO 2 H含量或硝酸纤维素为特征的氯乙烯 - 乙酸乙烯酯基共聚物，至少一种具有特定化学结构的氨基甲酸酯丙烯酸酯和至少一种低分子量 具有两个以上丙烯酰基或甲基丙烯酰基的化合物。 磁性层通过光束照射而硬化。 因此，铁磁粉末的分散性显着增加，电磁转变特性的提高和耐久性急剧增加。

公开(公告)号：US4448842A

公开(公告)日：1984-05-15

申请号：US345848

申请日：1982-02-04

申请人： Nobutaka Yamaguchi ,  Nobuo Tsuji ,  Masaaki Fujiyama

发明人： Nobutaka Yamaguchi ,  Nobuo Tsuji ,  Masaaki Fujiyama

IPC分类号： C09D5/23 ,  C09D7/12 ,  G11B5/708 ,  G11B5/70

CPC分类号： G11B5/7085 ,  Y10S428/90 ,  Y10T428/25 ,  Y10T428/257 ,  Y10T428/266

摘要： A magnetic recording medium having a magnetic layer formed on a non-magnetic base is disclosed. The magnetic layer comprises (1) magnetic particles, (2) an abrasive having a Mohs hardness of 6 or more, (3) calcium carbonate, (4) an aliphatic acid and (5) an aliphatic acid ester.

摘要翻译： 公开了一种在非磁性基底上形成有磁性层的磁记录介质。 磁性层包括（1）磁性颗粒，（2）莫氏硬度为6以上的磨料，（3）碳酸钙，（4）脂肪酸和（5）脂肪酸酯。

公开(公告)号：US4425400A

公开(公告)日：1984-01-10

申请号：US364029

申请日：1982-03-31

申请人： Nobutaka Yamaguchi ,  Masaaki Fujiyana ,  Nobuo Tsuji ,  Norio Nasu

发明人： Nobutaka Yamaguchi ,  Masaaki Fujiyana ,  Nobuo Tsuji ,  Norio Nasu

IPC分类号： C09D5/23 ,  C09D7/12 ,  G11B5/708 ,  H01F10/02

CPC分类号： G11B5/7085 ,  Y10S428/90 ,  Y10T428/257 ,  Y10T428/31663 ,  Y10T428/31678

摘要： In a magnetic recording medium comprising a magnetic recording layer on the surface of a non-magnetic support member, an abrasive having a Mohs' hardness of at least 6 and needle-shaped .alpha.-Fe.sub.2 O.sub.3 are incorporated in the magnetic layer, thus improving the coating durability and decreasing the head abrasion, jitter and noise.

摘要翻译： 在非磁性支撑体表面含磁记录层的磁记录介质中，具有莫氏硬度至少为6的磨粒和针状α-Fe2O3的磁记录介质结合在磁性层中，从而改善涂层 耐用性和降低头部磨损，抖动和噪音。

公开(公告)号：US4411966A

公开(公告)日：1983-10-25

申请号：US372686

申请日：1982-04-28

申请人： Nobutaka Yamaguchi ,  Nobuo Tsuji ,  Yasutoshi Okuzawa ,  Norio Nasu ,  Masaaki Fujiyama

发明人： Nobutaka Yamaguchi ,  Nobuo Tsuji ,  Yasutoshi Okuzawa ,  Norio Nasu ,  Masaaki Fujiyama

IPC分类号： C09D5/23 ,  G11B5/71 ,  G11B5/73 ,  G11B5/70 ,  H01F10/02

CPC分类号： G11B5/71 ,  Y10S428/90

摘要： The present invention relates to an improved magnetic recording medium comprising a magnetic recording layer on the surface of a non-magnetic support, in which the magnetic recording layer contains a fatty acid, high viscosity silicone oil and fatty acid ester.

摘要翻译： 本发明涉及一种改进的磁记录介质，其包括在非磁性载体的表面上的磁记录层，其中磁记录层含有脂肪酸，高粘度硅油和脂肪酸酯。

公开(公告)号：US4056396A

公开(公告)日：1977-11-01

申请号：US578069

申请日：1975-05-16

申请人： Ikutaro Horie ,  Takushi Miyazako ,  Shinji Sakaguchi ,  Nobuo Tsuji ,  Nagao Kameji

发明人： Ikutaro Horie ,  Takushi Miyazako ,  Shinji Sakaguchi ,  Nobuo Tsuji ,  Nagao Kameji

IPC分类号： G03C1/04 ,  C08F16/00 ,  C08F16/14 ,  C08F20/00 ,  C08F20/52 ,  G03C1/053 ,  G03C1/76 ,  G03C3/00

CPC分类号： G03C1/7614 ,  G03C1/053

摘要： A photographic light-sensitive material including a support, a non-light sensitive uppermost layer consisting of at least one organic synthetic high polymer compound as a film forming material and at least one light-sensitive layer between the support and the uppermost layer, said organic high polymer compound being selected from the group consisting of the following polymers (A) to (F):polymer (A) comprising repeating units a.sub.1 and a.sub.2 ;______________________________________ a.sub.1 : ##STR1## 80 - 97 mol% a.sub.2 : ##STR2## 3 - 20 mol% ______________________________________ Wherein M represents a cation, and m represents 0, 3 or 4;Polymer (B) comprising repeating units b.sub.1, b.sub.2 and b.sub.3 ;______________________________________ b.sub.1 : ##STR3## 5 - 30 mol% b.sub.2 : ##STR4## 5 - 75 mol% b.sub.3 : ##STR5## 20 - 65 mol% ______________________________________ Wherein R.sub.1 and R.sub.2 each represents --CH.sub.3 or --C.sub.2 H.sub.5, R.sub.3 and R.sub.5 each represents --H or --CH.sub.3, and R.sub.4 represents --CH.sub.3, --C.sub.2 H.sub.5, --C.sub.3 H.sub.7 or --C.sub.4 H.sub.9 ;polymer (C) comprising repeating units c.sub.1 and c.sub.2 ;______________________________________ c.sub.1 : ##STR6## 10 - 40 mol% c.sub.2 : ##STR7## 60 - 90 mol% ______________________________________ Wherein R.sub.6 represents --H or --CH.sub.3, and Z represents --COOH, --COOCH.sub.3, --COOC.sub.2 H.sub.5, --COOC.sub.3 H.sub.7, --COOC.sub.4 H.sub.9 or --CONH.sub.2 ;polymer (D) comprising repeating units d.sub.1 and d.sub.2 ;______________________________________ d.sub.1 : ##STR8## 10 - 40 mol% d.sub.2 : ##STR9## 60 - 90 mol% ______________________________________ Wherein R.sub.7 represents --H or --CH.sub.3 ;polymer (E) comprising repeating units e.sub.1 and e.sub.2 ;______________________________________ e.sub.1 : ##STR10## 20 - 60 mol% e.sub.2 : ##STR11## 40 - 80 mol% ______________________________________ wherein R.sub.8 and R.sub.9 each represents --H or --CH.sub.3, and X represents --CH.sub.3, --C.sub.2 H.sub.5, --C.sub.3 H.sub.7 or --C.sub.4 H.sub.9 ; andpolymer (F) comprising repeating unit f.sub.1 ;______________________________________ f.sub.1 : ##STR12## wherein Y represents --CH.sub.3 or --COCH.sub.3, R.sub.10 represents --H or --C.sub.n H.sub.2n+1, n being an integer of 1 to 12, said organic synthetic high polymer compound being insoluble to a processing solutions

公开(公告)号：US4668568A

公开(公告)日：1987-05-26

申请号：US878405

申请日：1986-06-20

申请人： Masaaki Fujiyama ,  Nobuo Tsuji ,  Nobutaka Yamaguichi

发明人： Masaaki Fujiyama ,  Nobuo Tsuji ,  Nobutaka Yamaguichi

IPC分类号： C09D5/23 ,  G11B5/708

CPC分类号： G11B5/7085 ,  Y10S428/90 ,  Y10T428/25 ,  Y10T428/257 ,  Y10T428/259 ,  Y10T428/31609 ,  Y10T428/31971

摘要： This invention provide a magnetic recording medium with well-balanced excellent properties as to video head abrasion, still life, video S/N and drop out, which comprises a non-magnetic support and a magnetic recording layer containing a ferromagnetic powder, a binder and (A) at least one inorganic compound powder selected from the group consisting of Cr.sub.2 O.sub.3, SiC and mixtures thereof and (B) at least one inorganic compound powder selected from the group consisting of Al.sub.2 O.sub.3, TiO.sub.2, SiO.sub.2, ZnO and mixtures thereof.

摘要翻译： 本发明提供了一种磁记录介质，其具有视频磁头磨损，静止时间，视频S / N和退出的良好平衡的优异特性，其包括非磁性支持和含有铁磁性粉末，粘合剂和 （A）至少一种选自Cr 2 O 3，SiC及其混合物的无机化合物粉末和（B）至少一种选自Al 2 O 3，TiO 2，SiO 2，ZnO及其混合物的无机化合物粉末。

公开(公告)号：US4503120A

公开(公告)日：1985-03-05

申请号：US505506

申请日：1983-06-17

申请人： Koichi Yamauchi ,  Nobuo Tsuji ,  Yasuyuki Yamada ,  Shinichi Funabashi ,  Masatoshi Kiyama

发明人： Koichi Yamauchi ,  Nobuo Tsuji ,  Yasuyuki Yamada ,  Shinichi Funabashi ,  Masatoshi Kiyama

IPC分类号： C08G18/42 ,  C09D5/23 ,  C09D127/00 ,  C09D127/06 ,  C09D175/00 ,  C09D175/04 ,  G11B5/702 ,  G11B5/70

CPC分类号： C08G18/4202 ,  G11B5/7022 ,  Y10S428/90 ,  Y10T428/265 ,  Y10T428/31551 ,  Y10T428/31565 ,  Y10T428/31786 ,  Y10T428/31935

摘要： A magnetic recording medium which comprises a non-magnetic support having thereon a magnetic recording layer containing a ferromagnetic fine powder and a binder as main components is disclosed. The magnetic recording layer containing as the binder (1) a vinyl chloride-vinyl acetate-maleic acid copolymer which has a mean polymerization degree of about 300 to about 400 and a maleic acid fraction of about 0.6 to about 1.5 wt %, (2) a polyurethane resin which has a number average molecular weight of 40,000 to 100,000 and is prepared from (i) a mixture of polyneopentyladipate having a mean molecular weight of 500 to 2,500 and polybutyleneadipate having a mean molecular weight of 500 to 2,500 with a mixing ratio of the former to the latter of from 2/8 to 9/1 by weight and (ii) diphenylmethane diisocyanate, and optionally (3) a low molecular weight polyisocyanate compound.

摘要翻译： 公开了一种磁记录介质，其包括其上具有含有铁磁性细粉末和粘合剂作为主要成分的磁记录层的非磁性载体。 含有粘合剂（1）的氯乙烯 - 乙酸乙烯酯 - 马来酸共聚物的磁记录层，其平均聚合度为约300至约400，马来酸含量为约0.6至约1.5重量％，（2） 数均分子量为40,000〜100,000的聚氨酯树脂，其由（i）平均分子量为500〜2,500的聚己酸己烯酯和平均分子量为500〜2,500的聚己二酸丁二醇酯的混合物与（i） 前者为2/8至9/1重量比，（ii）二苯基甲烷二异氰酸酯和任选的（3）低分子量多异氰酸酯化合物。