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1. 发明授权

US4323596A Coating iron oxide particles for magnetic recording 失效
标题翻译：涂覆用于磁记录的氧化铁颗粒
公开(公告)号：US4323596A
公开(公告)日：1982-04-06
申请号：US21870
申请日：1979-03-19
申请人： Gunter Buxbaum , Ingo Pflugmacher , Franz Hund , Volker Hahnkamm , Peter Woditsch
发明人： Gunter Buxbaum , Ingo Pflugmacher , Franz Hund , Volker Hahnkamm , Peter Woditsch
IPC分类号： G11B5/712 , C01G49/00 , C01G49/02 , C09D5/23 , C09D7/12 , C09D9/04 , G11B5/706 , H01F1/11 , B22F1/02 , G11B5/62
CPC分类号： G11B5/70657 , G11B5/70663 , G11B5/70668 , Y10S428/90 , Y10T428/25 , Y10T428/257 , Y10T428/261 , Y10T428/2991
摘要： In the preparation of highly orientatable needle-shaped ferrimagnetic iron oxide particles by the reduction and reoxidation of needle-shaped particles of hydrated oxide of iron which have been surface treated against sintering the improvement which comprises effecting the surface treatment by applying to the particles of hydrated oxide of iron one layer of oxygen-containing anions and a further layer of polyvalent cations, each layer weighing about 0.02 to 2% by weight of the particle. Advantageously, the polyvalent cation-containing layer is applied between two oxygen-containing anion layers, the oxygen-containing anions used are selected from the group consisting of silicate, phosphate, borate, vanadate, molybdate and tungstate, the polyvalent cations used are selected from the group consisting of aluminum, chromium, manganese, iron and gallium, each layer weighs about 0.1 to 1% of the weight of the particles and before the reduction and reoxidation the surface treated particles of hydrated oxide of iron are tempered at a temperature of about 600.degree. to 900.degree. C.
摘要翻译：在通过还原和再氧化已经对烧结进行表面处理的铁的水合氧化物的针状颗粒的还原和再氧化制备高度取向的针状亚铁磁性氧化铁颗粒时，其改进包括通过施加到水合物的颗粒进行表面处理铁氧化物一层含氧阴离子和另一层多价阳离子，每层重量为颗粒重量的约0.02至2重量％。有利地，将多价阳离子层施加在两个含氧阴离子层之间，所用的含氧阴离子选自硅酸盐，磷酸盐，硼酸盐，钒酸盐，钼酸盐和钨酸盐，所使用的多价阳离子选自由铝，铬，锰，铁和镓组成的组，各层重量为颗粒重量的约0.1至1％，在还原和再氧化之前，表面处理的铁水合氧化物颗粒在约 600〜900℃

2. 发明授权

US4014710A Magnetic pigments with improved orientability and a process for their production 失效
标题翻译：具有改善定向性的磁性颜料及其生产方法
公开(公告)号：US4014710A
公开(公告)日：1977-03-29
申请号：US489665
申请日：1974-07-18
申请人： Peter Woditsch , Franz Hund , Gunter Buxbaum , Volker Hahnkamm , Ingo Pflugmacher
发明人： Peter Woditsch , Franz Hund , Gunter Buxbaum , Volker Hahnkamm , Ingo Pflugmacher
IPC分类号： C01G49/00 , C01G49/02 , C09C1/00 , C09C1/22 , C09C1/24 , C09C3/12 , C09D5/23 , C09D7/12 , G11B5/706 , H01F1/11
CPC分类号： G11B5/70673 , C01G49/02 , C09C1/24 , G11B5/70657 , G11B5/70663 , G11B5/70668 , C01P2002/50 , C01P2002/82 , C01P2004/10 , C01P2006/42
摘要： An acicular, magnetic iron oxide pigment containing about 0.05 to 5% by weight of an organo silicon compound is produced by treating iron oxide hydroxide seeds either dry or in suspension with an organo silicon compound. Preferred organo silicon compounds comprise polymethylphenylsiloxane, polydimethylsiloxane and polydiphenylsiloxane. Trivalent metal ions may subsequently be deposited. The resulting pigments show only minimal losses of coercive force during processing into magnetic tapes.
摘要翻译：通过用有机硅化合物处理干燥或悬浮的铁氧化物氢氧化物种子，制造含有约0.05至5重量％的有机硅化合物的针状磁性氧化铁颜料。优选的有机硅化合物包括聚甲基苯基硅氧烷，聚二甲基硅氧烷和聚二苯基硅氧烷。随后可以沉积三价金属离子。所得到的颜料在加工成磁带期间仅表现出最小的矫顽力损失。

3. 发明授权

US4400432A Coating iron oxide particles for magnetic recording 失效
公开(公告)号：US4400432A
公开(公告)日：1983-08-23
申请号：US305577
申请日：1981-09-24
申请人： Gunter Buxbaum , Ingo Pflugmacher , Franz Hund , Volker Hahnkamm , Peter Woditsch
发明人： Gunter Buxbaum , Ingo Pflugmacher , Franz Hund , Volker Hahnkamm , Peter Woditsch
IPC分类号： G11B5/712 , C01G49/00 , C01G49/02 , C09D5/23 , C09D7/12 , C09D9/04 , G11B5/706 , H01F1/11 , B32B5/16 , B22F1/02 , G11B5/62
CPC分类号： G11B5/70657 , G11B5/70663 , G11B5/70668 , Y10S428/90 , Y10T428/25 , Y10T428/257 , Y10T428/261 , Y10T428/2991
摘要： In the preparation of highly orientatable needle-shaped ferrimagnetic iron oxide particles by the reduction and reoxidation of needle-shaped particles of hydrated oxide of iron which have been surface treated against sintering the improvement which comprises effecting the surface treatment by applying to the particles of hydrated oxide of iron one layer of oxygen-containing anions and a further layer of polyvalent cations, each layer weighing about 0.02 to 2% by weight of the particle. Advantageously, the polyvalent cation-containing layer is applied between two oxygen-containing anion layers, the oxygen-containing anions used are selected from the group consisting of silicate, phosphate, borate, vanadate, molybdate and tungstate, the polyvalent cations used are selected from the group consisting of aluminum, chromium, manganese, iron and gallium, each layer weighs about 0.1 to 1% of the weight of the particles and before the reduction and reoxidation the surface treated particles of hydrated oxide of iron are tempered at a temperature of about 600.degree. to 900.degree. C.

4. 发明授权

US3931025A Magnetic iron oxides with improved orientability and a process for their production 失效
标题翻译：具有改进方向性的磁铁氧化物及其生产工艺
公开(公告)号：US3931025A
公开(公告)日：1976-01-06
申请号：US501740
申请日：1974-08-29
申请人： Peter Woditsch , Gunter Buxbaum , Franz Hund , Volker Hahnkamm
发明人： Peter Woditsch , Gunter Buxbaum , Franz Hund , Volker Hahnkamm
IPC分类号： C09C1/22 , C01G49/00 , C01G49/02 , C01G49/08 , C09C1/00 , C09C1/24 , C09D5/23 , G11B5/706 , H01F1/11 , C01G49/06
CPC分类号： C09C1/24 , G11B5/70642 , G11B5/70647 , G11B5/70652 , G11B5/70663 , G11B5/70668 , G11B5/70673 , C01P2002/52 , C01P2006/42
摘要： An acicular, magnetic iron oxide pigment containing about 0.1 to 2 percent by weight of zinc and phosphate ions is produced by growing seeds and subsequently reducing and optionally reoxidizing acicular FeOOH. Said seeds were formed by precipitation from an iron (II) salt solution in the presence of about 0.1 to 4 percent by weight of zinc ions and about 0.1 to 2 percent by weight of phosphate ions based on the formed seeds.

5. 发明授权

US4140539A Hydrothermal process for producing dense iron oxide pigments 失效
标题翻译：水热法生产氧化铁的颜料
公开(公告)号：US4140539A
公开(公告)日：1979-02-20
申请号：US817079
申请日：1977-07-18
申请人： Franz Hund , Gunter Buxbaum , Lutz Leitner , Ingo Pflugmacher
发明人： Franz Hund , Gunter Buxbaum , Lutz Leitner , Ingo Pflugmacher
IPC分类号： C09C1/22 , C01G49/00 , C01G49/02 , C09C1/00 , C09C1/24 , G11B5/706 , C04B35/26
CPC分类号： C09C1/24 , G11B5/70647 , G11B5/70652 , G11B5/70673 , C01P2002/30 , C01P2006/42
摘要： An acicular to prismatic ferrimagnetic iron oxide pigment with a porosity of less than about 10% by volume, and optionally containing up to about 15% by weight of other metal oxides such as Zn or especially Co, are produced by heating a suspension of iron(III)oxide hydroxide in an autoclave to a temperature above about 100.degree. C in the presence of at least one mono-, di- or tri-saccharide, at least one alkali metal or alkaline earth metal hydroxide or carbonate and excess water, and washing, filtering and drying the resulting pigments.
摘要翻译：通过加热铁的悬浮液（以下）制备孔隙率小于约10体积％的针状至棱柱型亚铁磁性氧化铁颜料，并且任选地含有至多约15重量％的其它金属氧化物如Zn或特别是Co， III）氧化物氢氧化物在高于约100℃的温度下，在至少一种一糖，二糖或三糖，至少一种碱金属或碱土金属氢氧化物或碳酸盐和过量的水的存在下进行，并洗涤，过滤并干燥所得颜料。

6. 发明授权

US4378252A Magnetic separation to improve purity of iron oxide pigments 失效
标题翻译：磁选分离提高氧化铁颜料的纯度
公开(公告)号：US4378252A
公开(公告)日：1983-03-29
申请号：US268291
申请日：1981-05-29
申请人： Peter Kiemle , Franz Hund , Ingo Pflugmacher , Wolfgang Rambold
发明人： Peter Kiemle , Franz Hund , Ingo Pflugmacher , Wolfgang Rambold
IPC分类号： C09C1/00 , B03C1/00 , C01B13/16 , C01G49/06 , C09C1/22 , C09C1/24 , C09C3/04
CPC分类号： C01G49/06 , B03C1/00 , C01B13/16 , C09C1/24 , C09C3/04 , C01P2006/60 , C01P2006/62 , C01P2006/65
摘要： A process for increasing the color purity of iron oxide pigment particles admixed with color-modifying impurities and obtained by the Penniman process or the aniline process, comprising introducing the particles into a magnetic field, and removing from the magnetic field two fractions of different magnetizability, the first fraction being iron oxide pigment particles of increased color purity and the second fraction being enriched in impurities.
摘要翻译：一种用于提高与改色杂质混合并通过Penniman方法或苯胺方法获得的氧化铁颜料颗粒的颜色纯度的方法，包括将颗粒引入磁场，并从磁场中除去两种不同磁化性的部分，第一部分是增加色纯度的氧化铁颜料颗粒，第二部分富含杂质。

7. 发明授权

US4090888A Production of black iron oxide pigments 失效
标题翻译：生产黑色氧化铁颜料
公开(公告)号：US4090888A
公开(公告)日：1978-05-23
申请号：US674995
申请日：1976-04-08
申请人： Jakob Rademachers , Franz Hund , Ingo Pflugmacher , Gerhard Winter
发明人： Jakob Rademachers , Franz Hund , Ingo Pflugmacher , Gerhard Winter
IPC分类号： C09C1/22 , C01G49/00 , C01G49/08 , C09C1/00 , C09C1/24
CPC分类号： C09C1/24 , C01P2002/52
摘要： In a two-stage process for producing black iron oxide pigments wherein an iron salt solution is alkalized in a first stage to precipitate about 55 to 70% of the iron, the solution is oxidized to convert the precipitate to goethite, the solution is further alkalized in a second stage to precipitate the balance of the iron, the precipitated iron II hydroxide is allowed to react with goethite to form magnetite, the improvement which comprises effecting the second stage in the presence of an inorganic ionic compound of at least one metal selected from the group consisting of copper, nickel, aluminum, chromium, titanium, zirconium and vanadium in about 0.05 to 5% calculated as metal based on the weight of the final pigment. The resulting pigment is of high color intensity, narrow grain distribution range and pronounced magnetite structure.
摘要翻译：在生产黑铁氧化物颜料的两阶段方法中，其中铁盐溶液在第一阶段碱化以沉淀约55至70％的铁，溶液被氧化以将沉淀物转化成针铁矿，将溶液进一步碱化在第二阶段中，为了沉淀铁的平衡，使析出的铁II氢氧化物与针铁矿反应形成磁铁矿，其改进包括在选自以下的至少一种金属的无机离子化合物存在下进行第二阶段约0.05〜5％的铜，镍，铝，铬，钛，锆和钒组成的组以金属计，基于最终颜料的重量计算。所得颜料具有高颜色强度，窄粒度分布范围和明显的磁铁矿结构。

8. 发明授权

US4369265A Readily dispersible silicone-coated finely divided solids 失效
标题翻译：易分散的有机硅涂层细碎的固体
公开(公告)号：US4369265A
公开(公告)日：1983-01-18
申请号：US160782
申请日：1980-06-18
申请人： Gunter Buxbaum , Ottfried Schlak , Franz Hund , Lutz Leitner
发明人： Gunter Buxbaum , Ottfried Schlak , Franz Hund , Lutz Leitner
IPC分类号： C09C1/24 , C09C3/00 , C09C3/12 , C09D5/23 , C09D9/00 , C09D11/00 , C09D11/02 , G11B5/706 , G11B5/712 , H01F1/06
CPC分类号： G11B5/70647 , C09C1/24 , C09C3/12 , G11B5/712 , H01F1/061 , C01P2004/84 , C01P2006/42 , Y10T428/2991 , Y10T428/2995
摘要： Readily dispersible finely divided solids such as pigments, coated with an organo-silicone polymer of the formula ##EQU1## wherein R.sup.I, R.sup.II, R.sup.III each independently is an optionally halogenated alkyl, alkenyl or aryl radical having from 1 to 10 carbon atoms;R.sup.IV is an alkyl or alkenyl radical having from 9 to 24 carbon atom;R.sup.V is an alkyl or alkenyl radical having from 1 to 8 carbon atoms;the sum of a+b+c is from 1 to about 1.95;d is a number from about 0.2 to 2;e and f each independently is a number from 0 to 1;the sum of d+e+f is from about 0.2 to 2; andthe sum of a+b+c+d+e+f is up to 3.
摘要翻译：易于分散的细分固体如颜料，涂覆有下式的有机硅聚合物：其中RI，RII，RIII各自独立地为具有1-10个碳原子的任意卤代的烷基，烯基或芳基; RIV是具有9-24个碳原子的烷基或烯基; RV是具有1至8个碳原子的烷基或烯基; a + b + c的和为1〜约1.95; d为约0.2至2的数; e和f各自独立地为0至1的数; d + e + f的和为约0.2〜2; 并且a + b + c + d + e + f的和高达3。

9. 发明授权

US4290799A Ferromagnetic metal pigment essentially consisting of iron and a process for its production 失效
标题翻译：基本上由铁组成的铁磁金属颜料及其生产方法
公开(公告)号：US4290799A
公开(公告)日：1981-09-22
申请号：US124399
申请日：1980-02-25
申请人： Gerhard Schroeder , Gunter Buxbaum , Franz Hund , Heinrich-Christian Schopper , Rolf Naumann
发明人： Gerhard Schroeder , Gunter Buxbaum , Franz Hund , Heinrich-Christian Schopper , Rolf Naumann
IPC分类号： B22F9/22 , B22F9/20 , G11B5/706 , H01F1/047 , H01F1/06 , B22F1/00
CPC分类号： H01F1/065 , G11B5/70615
摘要： A metal powder, suitable for magnetic recording, consisting essentially of iron, the individual particles being acicular and containing on average no more then 5 pores and consisting on average of no more than 2 metal cores is produced by precipitating and oxidizing an aqueous iron-(II)-salt solution to produce finely divided acicular iron-(III)-oxide-hydroxide, stabilizing it as by treatment with cadmium, lead, calcium, magnesium, zinc, aluminum, chromium, tungsten, a phosphorus oxide and/or a boron oxide, converting it into ferromagnetic iron oxide of low pore content, and reducing it to metallic iron with a gaseous reducing agent at about 300.degree. to 600.degree. C.
摘要翻译：一种适用于磁记录的金属粉末，主要由铁组成，单个颗粒是针状的并且平均包含不超过5个孔，平均不超过2个金属芯构成，通过沉淀和氧化铁 - （ II）盐溶液以产生细分的针状铁 - （III） - 氧化物氢氧化物，通过用镉，铅，钙，镁，锌，铝，铬，钨，磷氧化物和/或硼处理来稳定化氧化物，将其转化成低孔含量的铁磁性氧化铁，并在约300℃至600℃下用气态还原剂将其还原成金属铁。

10. 发明授权

US4264462A Stabilization of magnetite pigments with heterocyclic nitrogen compounds 失效
标题翻译：用杂环氮化合物稳定磁铁矿颜料
公开(公告)号：US4264462A
公开(公告)日：1981-04-28
申请号：US944501
申请日：1978-09-21
申请人： Gunter Buxbaum , Bernd Stephan , Franz Hund , Gerhard Schroeder
发明人： Gunter Buxbaum , Bernd Stephan , Franz Hund , Gerhard Schroeder
IPC分类号： C09C1/00 , C09C1/22 , C09C1/24 , C09C3/08 , G11B5/706 , H01F1/36 , B05D5/00
CPC分类号： G11B5/70689 , C09C1/24 , C09C3/08 , C01P2004/10 , C01P2004/54 , C01P2006/12 , C01P2006/37 , C01P2006/42
摘要： A finely divided magnetite pigment such as is used in magnetic tapes is stabilized against oxidation by contact with a heterocyclic nitrogen compound such as morpholine, triazole, piperazine or substitution products thereof. The heterocyclic compound can be applied as a solution or in vapor form.
摘要翻译：用于磁带的精细分散的磁铁矿颜料通过与杂环氮化合物如吗啉，三唑，哌嗪或其取代产物的接触而稳定而防止氧化。杂环化合物可以作为溶液或蒸气形式使用。

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