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1. 发明授权

US5587232A Non-magnetic particles for non-magnetic undercoating layer of magnetic recording medium, non-magnetic undercoating layer containing the same, and magnetic recording medium having the undercoating layer 失效
标题翻译：磁记录介质的非磁性底涂层，含有其的非磁性底涂层的非磁性颗粒和具有底涂层的磁记录介质
公开(公告)号：US5587232A
公开(公告)日：1996-12-24
申请号：US101063
申请日：1993-08-04
申请人： Kazuyuki Hayashi , Keisuke Iwasaki , Yasuyuki Tanaka , Minoru Ohsugi , Toshiharu Harada , Masaru Isoai , Kazushi Takama
发明人： Kazuyuki Hayashi , Keisuke Iwasaki , Yasuyuki Tanaka , Minoru Ohsugi , Toshiharu Harada , Masaru Isoai , Kazushi Takama
IPC分类号： G11B5/73 , G11B5/733 , G11B5/738 , G11B5/66 , B32B5/16
CPC分类号： G11B5/733 , G11B5/738 , Y10S428/90 , Y10T428/25 , Y10T428/256 , Y10T428/257 , Y10T428/259 , Y10T428/265
摘要： Disclosed herein are non-magnetic particles for a non-magnetic undercoat layer of a magnetic recording medium, comprising acicular or spindle-shaped .alpha.-Fe.sub.2 O.sub.3 particles coated with at least one selected from the group consisting of an A1 compound, a silane coupling agent, a titanate coupling agent, an aluminate coupling agent and a zirconate coupling agent; a non-magnetic undercoating layer containing such non-magnetic particles; and magnetic recording medium having such an undercoating layer.
摘要翻译：本文公开了用于磁记录介质的非磁性底涂层的非磁性颗粒，其包括用至少一种选自Al化合物，硅烷偶联剂，钛酸酯偶联剂，铝酸盐偶联剂和锆酸盐偶联剂; 含有这种非磁性颗粒的非磁性底涂层; 以及具有这样的底涂层的磁记录介质。

2. 发明授权

US5378380A Process for producing acicular geothite particles and acicular magnetic iron oxide particles 失效
标题翻译：生产针状地质颗粒和针状磁性氧化铁颗粒的方法
公开(公告)号：US5378380A
公开(公告)日：1995-01-03
申请号：US22847
申请日：1993-02-25
申请人： Masaru Isoai , Tosiharu Harada , Tokihiro Kurata , Kazuhiro Fujita , Kazushi Takama , Shigekazu Jikuhara
发明人： Masaru Isoai , Tosiharu Harada , Tokihiro Kurata , Kazuhiro Fujita , Kazushi Takama , Shigekazu Jikuhara
IPC分类号： C01G49/06 , C01G49/08
CPC分类号： B82Y30/00 , C01G49/06 , C01G49/08 , C01P2004/03 , C01P2004/10 , C01P2004/51 , C01P2004/54 , C01P2004/62 , C01P2004/64 , C01P2006/42
摘要： Disclosed herein are a process for producing acicular goethite particles comprising the step of: blowing an oxygen-containing gas into a ferrous salt reaction solution containing colloidal ferrous hydroxide or iron-containing colloidal precipitates which is obtained by reacting an aqueous ferrous salt solution with less than one equivalent of an aqueous alkali hydroxide solution, an aqueous alkali carbonate solution, or an aqueous alkali hydroxide and alkali carbonate solution based on Fe.sup.2+ in said aqueous ferrous salt solution, in the presence of ascorbic acid or a salt thereof so as to oxidize said colloidal ferrous hydroxide or iron-containing colloidal precipitates and to produce acicular goethite particles throught green rust; and a process for producing acicular magnetic iron oxide particles by reducing the acicular goethite particles obtained in the above process to produce acicular magnetite particles, and if necessary, oxidizing the acicular magnetite particles to obtain acicular maghemite particles, and if necessary, modifying the acicular magnetite or maghemite particles with Co or Co and Fe.sup.2+.
摘要翻译：本文公开了一种制备针状针铁矿颗粒的方法，包括以下步骤：将含氧气体吹入含有胶态氢氧化亚铁或含铁胶体沉淀物的亚铁盐反应溶液中，该溶液通过使亚铁盐水溶液与小于一种碱金属氢氧化物水溶液，碱金属碳酸盐水溶液或碱金属氢氧化物和碱金属碳酸盐水溶液中，在所述含水亚铁盐水溶液中，在抗坏血酸或其盐的存在下，氧化所述胶体含氢氧化铁或含铁胶体沉淀物，并通过绿锈生成针状针铁矿颗粒; 以及通过将上述方法中得到的针状针铁矿粒子还原而制造针状磁性氧化铁粒子的方法，制造针状磁铁矿粒子，根据需要，根据需要氧化针状磁铁矿粒子，得到针状磁赤铁矿粒子，根据需要，对针状磁铁矿或具有Co或Co和Fe2 +的磁赤铁矿颗粒。

3. 发明授权

US5480571A Process for producing acicular goethite particles and acicular magnetic iron oxide particles 失效
标题翻译：制备针状针铁矿颗粒和针状磁性氧化铁颗粒的方法
公开(公告)号：US5480571A
公开(公告)日：1996-01-02
申请号：US309743
申请日：1994-09-21
申请人： Masaru Isoai , Tosiharu Harada , Tokihiro Kurata , Kazuhiro Fujita , Kazushi Takama , Shigekazu Jikuhara
发明人： Masaru Isoai , Tosiharu Harada , Tokihiro Kurata , Kazuhiro Fujita , Kazushi Takama , Shigekazu Jikuhara
IPC分类号： C01G49/06 , C01G49/08
CPC分类号： B82Y30/00 , C01G49/06 , C01G49/08 , C01P2004/03 , C01P2004/10 , C01P2004/51 , C01P2004/54 , C01P2004/62 , C01P2004/64 , C01P2006/42
摘要： Disclosed herein are a process for producing acicular goethite particles comprising the step off: blowing an oxygen-containing gas into a ferrous salt reaction solution containing colloidal ferrous hydroxide or iron-containing colloidal precipitates which is obtained by reacting an aqueous ferrous salt solution with less than one equivalent of an aqueous alkali hydroxide solution, an aqueous alkali carbonate solution, or an aqueous alkali hydroxide and alkali carbonate solution based on Fe.sup.2+ in said aqueous ferrous salt solution, in the presence of ascorbic acid or a salt thereof so as to oxidize said colloidal ferrous hydroxide or iron-containing colloidal precipitates and to produce acicular goethite particles throught green rust; and a process for producing acicular magnetic iron oxide particles by reducing the acicular goethite particles obtained in the above process to produce acicular magnetite particles, and if necessary, oxidizing the acicular magnetite particles to obtain acicular maghemite particles, and if necessary, modifying the acicular magnetite or maghemite particles with Co or Co and Fe.sup.2+.
摘要翻译：本文公开了一种制备针状针铁矿颗粒的方法，包括以下步骤：将含氧气体吹入含有胶态氢氧化亚铁或含铁胶体沉淀物的亚铁盐反应溶液中，该溶液通过使亚铁盐水溶液与小于一种碱金属氢氧化物水溶液，碱金属碳酸盐水溶液或碱金属氢氧化物和碱金属碳酸盐水溶液中，在所述含水亚铁盐水溶液中，在抗坏血酸或其盐的存在下，氧化所述胶体含氢氧化铁或含铁胶体沉淀物，并通过绿锈生成针状针铁矿颗粒; 以及通过将上述方法中得到的针状针铁矿粒子还原而制造针状磁性氧化铁粒子的方法，制造针状磁铁矿粒子，根据需要，根据需要氧化针状磁铁矿粒子，得到针状磁赤铁矿粒子，根据需要，对针状磁铁矿或具有Co或Co和Fe2 +的磁赤铁矿颗粒。

4. 发明申请

US20090311617A1 BLACK MAGNETIC IRON OXIDE PARTICLES, MAGNETIC CARRIER FOR ELECTROPHOTOGRAPHIC DEVELOPER AND TWO-COMPONENT DEVELOPER 有权
标题翻译：黑色磁性氧化物颗粒，电子显影开发商和双组分开发商的磁性载体
公开(公告)号：US20090311617A1
公开(公告)日：2009-12-17
申请号：US12484318
申请日：2009-06-15
申请人： Shinji Uemoto , Hiromitsu Misawa , Ryo Iwai , Naoki Uchida , Koso Aoki , Kazuya Fujita , Kaori Kinoshita , Kazushi Takama , Eiichi Kurita
发明人： Shinji Uemoto , Hiromitsu Misawa , Ryo Iwai , Naoki Uchida , Koso Aoki , Kazuya Fujita , Kaori Kinoshita , Kazushi Takama , Eiichi Kurita
IPC分类号： G03G9/083
CPC分类号： G03G9/107 , G03G9/113 , G03G9/1135 , G03G9/1136
摘要： The present invention relates to black magnetic iron oxide particles having an average particle diameter of 0.05 to 2.0 μm and an electric resistance value at an applied voltage of 100 V of not less than 1×108 Ω·m; and a magnetic carrier for electrophotographic developer comprising spherical magnetic composite particles obtained by dispersing black magnetic iron oxide particles in a binder resin, wherein the magnetic carrier has an electric resistance value R100 at an applied voltage of 100 V of 1×108 to 1×1014 Ω·m, and an electric resistance value R300 at an applied voltage of 300 V which satisfies the relationship represented by the formula: 0.1≦R300/R100≦1.
摘要翻译：本发明涉及平均粒径为0.05〜2.0μm的黑色磁性氧化铁颗粒，100V的施加电压下的电阻值不小于1×10 8Ω·m。和一种用于电子照相显影剂的磁性载体，其包含通过将黑色磁性氧化铁颗粒分散在粘合剂树脂中而获得的球形磁性复合颗粒，其中该磁性载体在100V的施加电压为1×10 8至1×10 14Ω·m的电阻值R100，以及在300V的施加电压下的电阻值R300，其满足由下式表示的关系：0.1R300 / R100

5. 发明授权

US5294492A Acicular magnetic iron oxide particles 失效
标题翻译：针状磁性氧化铁颗粒
公开(公告)号：US5294492A
公开(公告)日：1994-03-15
申请号：US722472
申请日：1991-07-02
申请人： Hiroshi Oka , Kazuaki Kouziro , Toshitada Shigemura , Tomohisa Moriya , Katsumi Yamashita , Kazushi Takama , Takanobu Uemoto , Kazuhiro Fujita
发明人： Hiroshi Oka , Kazuaki Kouziro , Toshitada Shigemura , Tomohisa Moriya , Katsumi Yamashita , Kazushi Takama , Takanobu Uemoto , Kazuhiro Fujita
IPC分类号： C01G49/00 , C09D5/23 , C09D7/12 , G11B5/706 , G11B5/712 , H01F1/11 , B32B15/02
CPC分类号： G11B5/70673 , G11B5/712 , Y10T428/2991
摘要： Disclosed herein is a process for producing acicular magnetic iron oxide particles comprising the steps of: mixing an aqueous dispersion of acicular magnetic iron oxide particles with an aqueous solution of a Co salt and an alkaline aqueous solution, or an aqueous solution of a Co salt, an aqueous solution of an Fe(II) salt and and an alkaline aqueous solution; and heat-treating the alkaline suspension solution obtained at 50.degree. to 100.degree. C.; wherein an Sr salt, a Ba salt or an Sr salt and a Ba salt is added to one selected from the group consisting of said aqueous dispersion of acicular magnetic iron oxide particles, said aqueous solution of a Co salt, said aqueous solution of an Fe(II) salt, said alkaline aqueous solution and said alkaline suspension solution before heat-treatment, and at least one selected from the group consisting of Si compound, Al compound, Zn compound and Mg compound is added to one selected from the group consisting of said aqueous dispersion of acicular magnetic iron oxide particles, said aqueous solution of a Co salt, said aqueous solution of an Fe(II) salt, said alkaline aqueous solution, said alkaline suspension solution before heat-treatment and said alkaline suspension solution during heat-treatment.
摘要翻译：本发明公开了一种制备针状磁性氧化铁颗粒的方法，包括以下步骤：将针状磁性氧化铁颗粒的水性分散体与Co盐和碱性水溶液的水溶液或Co盐的水溶液混合， Fe（II）盐和碱性水溶液的水溶液; 对在50〜100℃下得到的碱性悬浮液进行热处理。其中将Sr盐，Ba盐或Sr盐和Ba盐加入到选自由针状磁性氧化铁颗粒的所述水分散体，所述Co盐水溶液，Fe （II）盐，所述碱性水溶液和所述碱性悬浮液在热处理前，将选自Si化合物，Al化合物，Zn化合物和Mg化合物中的至少一种添加到选自以下的一种中：所述针状磁性氧化铁颗粒的水分散体，所述Co盐水溶液，所述Fe（II）盐水溶液，所述碱性水溶液，热处理前的所述碱性悬浮液和所述碱性悬浮液在热处理过程中，治疗。

6. 发明授权

US09285698B2 Black magnetic iron oxide particles, magnetic carrier for electrophotographic developer and two-component developer 有权
标题翻译：黑色磁性氧化铁颗粒，用于电子照相显影剂和双组分显影剂的磁性载体
公开(公告)号：US09285698B2
公开(公告)日：2016-03-15
申请号：US12484318
申请日：2009-06-15
申请人： Shinji Uemoto , Hiromitsu Misawa , Ryo Iwai , Naoki Uchida , Koso Aoki , Kazuya Fujita , Kaori Kinoshita , Kazushi Takama , Eiichi Kurita
发明人： Shinji Uemoto , Hiromitsu Misawa , Ryo Iwai , Naoki Uchida , Koso Aoki , Kazuya Fujita , Kaori Kinoshita , Kazushi Takama , Eiichi Kurita
IPC分类号： G03G9/083 , G03G9/107 , G03G9/113
CPC分类号： G03G9/107 , G03G9/113 , G03G9/1135 , G03G9/1136
摘要： Black magnetic iron oxide particles having an average particle diameter of 0.05 to 2.0 μm and an electric resistance value at an applied voltage of 100 V of not less than 1×108 Ω·cm. Also a magnetic carrier for electrophotographic developer having spherical magnetic composite particles obtained by dispersing black magnetic iron oxide particles in a binder resin. The magnetic carrier has an electric resistance value R100 at an applied voltage of 100 V of 1×108 to 1×1014 Ω·cm, and an electric resistance value R300 at an applied voltage of 300 V which satisfies the relationship represented by the formula: 0.1≦R300/R100≦1.
摘要翻译：平均粒径为0.05〜2.0μm，施加电压为100V的电阻值为1×10 8Ω·cm·cm以上的黑色磁性氧化铁粒子。还有一种用于电子照相显影剂的磁性载体，其具有通过将黑色磁性氧化铁颗粒分散在粘合剂树脂中而获得的球形磁性复合颗粒。磁载体在100V的施加电压为1×108〜1×1014＆OHgr·cm时具有电阻值R100，在300V的施加电压下的电阻值R300满足式：0.1＆nlE; R300 / R100＆nlE; 1。

7. 发明授权

US3970738A Process for producing iron oxide products from waste liquids containing ferrous salts 失效
标题翻译：从含有亚铁盐的废液中生产氧化铁产品的方法
公开(公告)号：US3970738A
公开(公告)日：1976-07-20
申请号：US535194
申请日：1974-12-23
申请人： Goro Matsui , Koji Toda , Nanao Horiishi , Kazuyoshi Wakimoto , Yoshifumi Nishiyama , Tsuneyoshi Taketa , Kazushi Takama
发明人： Goro Matsui , Koji Toda , Nanao Horiishi , Kazuyoshi Wakimoto , Yoshifumi Nishiyama , Tsuneyoshi Taketa , Kazushi Takama
IPC分类号： C01G49/08 , C01G49/02 , C09C1/24
CPC分类号： B82Y30/00 , C01G49/02 , C09C1/24 , C01P2002/32 , C01P2002/72 , C01P2004/03 , C01P2004/62 , C01P2004/64 , Y10S423/01 , Y10S423/02
摘要： The processes for producing iron oxide products from a solution of ferrous salts selected from the group consisting of waste liquid containing ferrous salts and aqueous solution in which ferrous salts obtained from the waste liquid are dissolved, under the acid, wet and high ferrous concentration conditions. More particularly, the processes for purifying said waste liquids comprising the bivalent iron removing steps.
摘要翻译：在酸，湿和高亚铁浓度条件下，从含有亚铁盐的废液和从废液中得到的亚铁盐溶解的水溶液中的铁盐溶液的溶液生产氧化铁产品的方法。更具体地，涉及包含二价铁除去步骤的净化所述废液的方法。

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