公开(公告)号：US5164173A

公开(公告)日：1992-11-17

申请号：US199865

申请日：1988-05-27

Applicant: Norbert Muller ,  Manfred Ohlinger ,  Rainer Feser ,  Bernhard Bottcher ,  Peter Rudolf ,  Werner Hubner

Inventor： Norbert Muller ,  Manfred Ohlinger ,  Rainer Feser ,  Bernhard Bottcher ,  Peter Rudolf ,  Werner Hubner

IPC: C01G37/027 ,  G11B5/706 ,  H01F1/11

CPC classification number: C01G37/027 ,  G11B5/70636 ,  C01P2004/10 ,  C01P2006/10 ,  C01P2006/12 ,  C01P2006/42

Abstract: Stabilized acicular ferromagnetic chromium dioxide is prepared by a method in which the chromium dioxide surface formed as a result of a reductive treatment is treated with adsorbed monobasic or polybasic hydroxycarboxylic acids.

Abstract translation: 稳定的针状铁磁性二氧化铬通过其中由还原处理形成的二氧化铬表面用吸附的一元或多元羟基羧酸处理的方法制备。

公开(公告)号：US5030371A

公开(公告)日：1991-07-09

申请号：US429772

申请日：1989-10-31

Applicant: Michael W. Mueller ,  Ekkehard Schwab ,  Helmut Auweter ,  Rainer Feser ,  Rudi Lehnert ,  Norbert Mueller ,  Manfred Ohlinger

Inventor： Michael W. Mueller ,  Ekkehard Schwab ,  Helmut Auweter ,  Rainer Feser ,  Rudi Lehnert ,  Norbert Mueller ,  Manfred Ohlinger

IPC: C01G49/00 ,  C09D5/23 ,  C09D7/12 ,  G11B5/706 ,  H01F1/11

CPC classification number: G11B5/70636

Abstract: An acicular, ferromagnetic material which has a high coercive force and essentially consists of iron-containing chromium dioxide is prepared by thermal decomposition of hydrated chromium(III) chromate under superatmospheric pressure.

Abstract translation: 通过在超大气压下热分解水合铬酸（III）铬，制备具有高矫顽力并且基本上由含铁二氧化铬组成的针状铁磁材料。

公开(公告)号：US4960462A

公开(公告)日：1990-10-02

申请号：US284246

申请日：1988-12-14

Applicant: Michael W. Mueller ,  Kalus-Dieter Hoppe ,  Ekkehard Schwab ,  Werner Steck ,  Helmut Auweter ,  Rainer Feser

Inventor： Michael W. Mueller ,  Kalus-Dieter Hoppe ,  Ekkehard Schwab ,  Werner Steck ,  Helmut Auweter ,  Rainer Feser

IPC: B22F9/20 ,  B22F9/22 ,  G11B5/706 ,  H01F1/047 ,  H01F1/06

CPC classification number: G11B5/70615 ,  B22F9/22

Abstract: Acicular, ferromagnetic metal particles which essentially consist of iron and have a nickel content of not more than 0.4% by weight and high values for coercive force and magnetization, and a process for the preparation of these particles. The particles further include zinc, phosphorus in the form of phosphate ions, and silicon in the form of SiO.sub.2.

Abstract translation: 针状，铁质金属颗粒，其主要由铁组成且镍含量不超过0.4重量％，矫顽力和磁化强度高，以及制备这些颗粒的方法。 颗粒还包括呈磷酸根离子形式的锌，磷和SiO 2形式的硅。

公开(公告)号：US4933004A

公开(公告)日：1990-06-12

申请号：US11127

申请日：1987-02-05

Applicant: Klaus-Dieter Hoppe ,  Werner Steck ,  Jenoe Kovacs ,  Rainer Feser ,  Helmut Jakusch

Inventor： Klaus-Dieter Hoppe ,  Werner Steck ,  Jenoe Kovacs ,  Rainer Feser ,  Helmut Jakusch

IPC: B22F9/20 ,  B22F9/22 ,  C01G49/06 ,  G11B5/706 ,  G11B5/712 ,  H01F1/06

CPC classification number: B82Y30/00 ,  B22F9/22 ,  C01G49/06 ,  G11B5/70615 ,  G11B5/712 ,  C01P2002/54 ,  C01P2004/10 ,  C01P2004/62 ,  C01P2004/64 ,  C01P2006/12 ,  C01P2006/42

Abstract: Ferromagnetic metal particles of substantially iron are prepared by starting from an acicular .alpha.-FeOOH, applying a shape-stabilizing finish to the particle surface, heating at 500.degree.-850.degree. C. and subsequently reducing with gaseous reducing agents at 200.degree.-500.degree. C. to the metal, and starting .alpha.-FeOOH being prepared in the presence of zinc and phosphate ions.

Abstract translation: 基本上铁的铁磁性金属颗粒通过从针状α-FeO​​OH开始制备，对颗粒表面施加形状稳定整理剂，在500-850℃下加热，然后在200-500℃下用气态还原剂还原 并且在锌和磷酸根离子存在下制备起始的α-FeO​​OH。

公开(公告)号：US4826671A

公开(公告)日：1989-05-02

申请号：US024564

申请日：1987-03-11

Applicant: Volker Arndt ,  Rainer Feser ,  Werner Steck ,  Helmut Jakusch

Inventor： Volker Arndt ,  Rainer Feser ,  Werner Steck ,  Helmut Jakusch

IPC: H01F1/11 ,  C01G49/00 ,  C01G49/06 ,  G11B5/706

CPC classification number: G11B5/70663 ,  C01G49/06 ,  C01P2002/54 ,  C01P2004/10 ,  C01P2004/54 ,  C01P2004/62 ,  C01P2004/84 ,  C01P2006/42

Abstract: Finely divided, acicular and pore-free .alpha.-Fe.sub.2 O.sub.3 is prepared from iron(III) salts in the presence of one or more organic substances which form complexes with iron(III) ions, in alkaline suspension, at from 80.degree. to 250.degree. C.

Abstract translation: 在一种或多种有机物质的存在下，在碱性悬浮液中，在80-250℃下，由铁（III）盐制备细小的针状和无孔的α-Fe 2 O 3，所述有机物与铁（III）离子形成络合物 。

公开(公告)号：US4755395A

公开(公告)日：1988-07-05

申请号：US859902

申请日：1986-05-05

Applicant: Werner Steck ,  Rainer Feser ,  Werner Loeser ,  Peter Rudolf ,  Guenter Vaeth ,  Helmut Jakusch ,  Jenoe Kovacs

Inventor： Werner Steck ,  Rainer Feser ,  Werner Loeser ,  Peter Rudolf ,  Guenter Vaeth ,  Helmut Jakusch ,  Jenoe Kovacs

IPC: C01G49/00 ,  C01G49/06 ,  C09D5/23 ,  G11B5/706 ,  H01F1/11

CPC classification number: G11B5/70673

Abstract: The preparation of acicular ferrimagnetic iron oxides which contain cobalt and phosphate ions and, if desired, further additives, and their use for manufacturing magnetic recording media.

Abstract translation: 制备含有钴和磷酸根离子的针状亚铁磁性氧化物，如果需要，还可制备其它添加剂及其制造磁记录介质的用途。

公开(公告)号：US4755315A

公开(公告)日：1988-07-05

申请号：US14172

申请日：1987-02-12

Applicant: Werner Steck ,  Rainer Feser ,  Helmut Jakusch ,  Peter Rudolf ,  Guenter Vaeth ,  Udo Kullmann

Inventor： Werner Steck ,  Rainer Feser ,  Helmut Jakusch ,  Peter Rudolf ,  Guenter Vaeth ,  Udo Kullmann

IPC: C01G49/00 ,  G11B5/706 ,  H01F1/10 ,  C01G49/06

CPC classification number: G11B5/70673

Abstract: A process for the preparation of cobalt-containing isotropic magnetic iron oxides which are based on gamma-iron(III) oxide, contain from 2 to 7% by weight of cobalt(II) ions and less than 2% by weight of Fe(II) ions, the percentages in each case being based on the iron oxide, and have a particle length of from 0.08 to 0.30 .mu.m, a length/width ratio of from 1.5 to 3.5:1 and a specific remanent magnetization after saturation of not less than 60 nTm.sup.3 /g.

Abstract translation: 制备基于γ-氧化铁（III）的含钴各向同性磁性氧化铁的方法含有2至7重量％的钴（II）离子和小于2重量％的Fe（II ）离子，每种情况下的百分比基于氧化铁，并且具有0.08至0.30μm的长度，1.5至3.5:1的长宽比和饱和后的特定剩余磁化强度不小于 超过60 nTm3 / g。

公开(公告)号：US06204218B1

公开(公告)日：2001-03-20

申请号：US09385457

申请日：1999-08-30

Applicant: Klemens Flick ,  Ruprecht Meissner ,  Werner Hefner ,  Rainer Feser ,  Fabian Kunz

Inventor： Klemens Flick ,  Ruprecht Meissner ,  Werner Hefner ,  Rainer Feser ,  Fabian Kunz

IPC: B01J2108

CPC classification number: C10G70/02 ,  B01J21/08 ,  B01J23/44 ,  B01J23/50 ,  B01J35/10 ,  B01J35/1014 ,  B01J35/1019 ,  B01J35/108 ,  C10G45/40

Abstract: A catalyst comprising, in its active composition, from 0.05 to 1.0% by weight of at least one metal or compound of a metal of the 10th group of the Periodic Table of the Elements and from 0.05 to 1.0% by weight of at least one metal or compound of a metal of the 11th group of the Periodic Table of the Elements, with the weight ratio of the metal of the 11th group to the metal of the 10th group being from 0.95 to 1.05, and, as support, an SiO2-containing catalyst support having a BET surface area of from 2 to 400 m2/g, wherein at least 20% of the total pore volume of the catalyst is made up by pores having a diameter greater than 100 nanometers, can be used in processes for removing alkynes, dienes and/or monounsaturated hydrocarbons from streams of materials.

Abstract translation: 一种催化剂，其活性组合物含有0.05-1.0％（重量）元素周期表第十族金属的至少一种金属或化合物，以及0.05-1.0％重量的至少一种金属 或元素周期表第11族金属的化合物，第11族金属与第10族金属的重量比为0.95〜1.05，作为载体，含有SiO 2的 具有2至400m 2 / g的BET表面积的催化剂载体，其中催化剂的总孔体积的至少20％由直径大于100纳米的孔组成，可用于除去炔烃的方法 ，二烃类和/或单不饱和烃类。

公开(公告)号：US5096779A

公开(公告)日：1992-03-17

申请号：US397290

申请日：1989-08-23

Applicant: Michael W. Mueller ,  Ekkehard Schwab ,  Helmut Auweter ,  Rainer Feser ,  Werner Huebner ,  Norbert Mueller ,  Manfred Ohlinger ,  Hermann Dikow

Inventor： Michael W. Mueller ,  Ekkehard Schwab ,  Helmut Auweter ,  Rainer Feser ,  Werner Huebner ,  Norbert Mueller ,  Manfred Ohlinger ,  Hermann Dikow

IPC: C01G37/027 ,  C09D5/23 ,  C09D7/12 ,  G11B5/706 ,  H01F1/11

CPC classification number: G11B5/70636 ,  Y10S428/90 ,  Y10T428/2991

Abstract: A chromium dioxide material consisting of acicular, ferromagnetic chromium dioxide particles having a nonmagnetic, hydrogen-containing protective surface layer, which material has improved stability to chemical decomposition, a process for its preparation and magnetic recording media containing this chromium dioxide and having good long-term stability of the residual magnetization under conditions of high humidity and temperature are described.

Abstract translation: 由具有非磁性，含氢保护表面层的针状铁磁性二氧化铬颗粒组成的二氧化铬材料，该材料具有改善的化学分解稳定性，其制备方法和含有该二氧化铬的磁记录介质， 描述了在高湿度和高温条件下剩余磁化的长期稳定性。

公开(公告)号：US5009877A

公开(公告)日：1991-04-23

申请号：US481777

申请日：1990-02-20

Applicant: Werner Steck ,  Laszlo Marosi ,  Herbert Haberkorn ,  Rainer Feser ,  Werner Huebner ,  Helmut Jakusch

Inventor： Werner Steck ,  Laszlo Marosi ,  Herbert Haberkorn ,  Rainer Feser ,  Werner Huebner ,  Helmut Jakusch

IPC: H01F1/11 ,  C01G37/027 ,  G11B5/706

CPC classification number: G11B5/70636

Abstract: Acicular ferromagnetic chromium dioxide is stabilized by treatment with an alkali metal hydroxide in an aqueous alkaline suspension at elevated temperatures.

Abstract translation: 针状铁磁性二氧化铬通过在碱性水溶液中在高温下用碱金属氢氧化物处理来稳定化。