公开(公告)号：US4018968A

公开(公告)日：1977-04-19

申请号：US507457

申请日：1974-09-19

申请人： Ute Neumann ,  Hermann Roller ,  Job-Werner Hartmann ,  Joachim Hack ,  Herbert Motz ,  Werner Ostertag

发明人： Ute Neumann ,  Hermann Roller ,  Job-Werner Hartmann ,  Joachim Hack ,  Herbert Motz ,  Werner Ostertag

IPC分类号： C07F9/09 ,  C08K5/521 ,  C09D5/23 ,  C09D7/12 ,  G11B5/71 ,  G11B5/72 ,  G11B5/725 ,  H01F10/02

CPC分类号： G11B5/71 ,  C07F9/091 ,  C08K5/521 ,  Y10S428/90

摘要： Coated magnetic recording media, especially video tapes and computer tapes, comprising a non-magnetic base carrying a magnetic coating which consists of a dispersion, essentially containing a finely divided magnetic pigment in an organic binder and at least one lubricant. A compound of the formula ##STR1## in which n is an integer of from 1 to 3 and R is alkyl, alkoxyalkyl or aralkyl, each of 3 to 18 carbon atoms, is used as a lubricant. The products have high abrasion resistance coupled with only little transfer of material to the magnetic heads even under fluctuating climatic conditions.

摘要翻译： 涂覆的磁记录介质，特别是视频磁带和计算机磁带，其包含带有磁性涂层的非磁性基底，磁性涂层由分散体组成，基本上含有有机粘合剂中的细分磁性颜料和至少一种润滑剂。 其中n为1〜3的整数，R为具有3〜18个碳原子的烷基，烷氧基烷基或芳烷基的式“IMAGE”的化合物用作润滑剂。 该产品具有高耐磨性，即使在波动的气候条件下，也只能将少量的材料转移到磁头。

公开(公告)号：US4018967A

公开(公告)日：1977-04-19

申请号：US507466

申请日：1974-09-19

申请人： Hermann Roller ,  Werner Senkpiel ,  Gerd Wunsch ,  Job-Werner Hartmann ,  Friedrich Fuchs ,  Joachim Hack ,  Volker Kiener ,  Herbert Motz ,  Werner Ostertag

发明人： Hermann Roller ,  Werner Senkpiel ,  Gerd Wunsch ,  Job-Werner Hartmann ,  Friedrich Fuchs ,  Joachim Hack ,  Volker Kiener ,  Herbert Motz ,  Werner Ostertag

IPC分类号： G11B5/72 ,  C07F9/6581 ,  C07F9/6593 ,  C08K5/5399 ,  C09D5/23 ,  C09D7/12 ,  G11B5/71 ,  G11B5/725 ,  H01F10/02

CPC分类号： C07F9/65815 ,  C07F9/65812 ,  C08K5/5399 ,  G11B5/71 ,  Y10S428/90 ,  Y10T428/31609

摘要： Magnetic recording tape especially suitable for use as video tape and computer tape, comprising a base carrying a magnetic coating which consists essentially of a dispersion of a finely divided magnetic pigment and at least one lubricant in an organic binder. The lubricant is a compound of the formula ##STR1## IN WHICH N IS AN INTEGER OF FROM 3 TO 8 AND R.sup.1 and R.sup.2 are an alkoxy or aralkoxy radical or conjointly are an alkyldioxy radical of 3 to 18 carbon atoms. A magnetic recording tape prepared with a high proportion of such a lubricant is distinguished by high abrasion resistance coupled with a minimum transfer of material to the magnetic heads even under fluctuating climatic conditions.

摘要翻译： 特别适合用作录像带和计算机磁带的磁记录带，包括承载磁性涂层的底座，其基本上由细分磁性颜料和至少一种润滑剂在有机粘合剂中的分散体组成。 润滑剂是下式的化合物，其中N是3至8的整数，并且R 1和R 2是烷氧基或芳烷氧基，或者共同是具有3至18个碳原子的烷基二氧基。 用高比例的这种润滑剂制备的磁记录带的特征在于，即使在波动的气候条件下，也可以通过高耐磨性和最小的材料转移到磁头来进行。

公开(公告)号：US3995089A

公开(公告)日：1976-11-30

申请号：US564473

申请日：1975-04-02

申请人： Job Werner Hartmann ,  Hans-Joerg Hartmann ,  Dieter Mayer ,  Peter Felleisen ,  Ursula Klein ,  Herbert Motz

发明人： Job Werner Hartmann ,  Hans-Joerg Hartmann ,  Dieter Mayer ,  Peter Felleisen ,  Ursula Klein ,  Herbert Motz

IPC分类号： G11B5/62 ,  G11B5/708 ,  H01F10/00

CPC分类号： G11B5/708 ,  G11B5/62 ,  Y10S428/90 ,  Y10T428/24413 ,  Y10T428/265 ,  Y10T428/31609

摘要： A magnetic recording medium in the form of a card having a non-magnetic support with a magnetic coating on one side of the support and a backcoating on the opposite side of the support, which backcoating exhibits improved scratch resistance and adherence to the support and improved frictional characteristics and consists essentially of 20 to 50% by weight of a binder mixture containing 10 to 60% by weight of an elastomeric polyurethane and, incorporated in the binder mixture, a non-magnetic pulverulent mixture of 10 to 40% by weight of conductive carbon powder and 60 to 90% by weight of platelet-shaped and spherical particles.

摘要翻译： 一种具有卡片形式的磁记录介质，其具有在载体的一侧上具有磁性涂层的非磁性载体和在支撑体的相对侧上的背涂层，所述背涂层显示出改善的耐划伤性和对载体的粘附性并且改进 摩擦特性，并且基本上由20至50重量％的包含10至60重量％的弹性体聚氨酯的粘合剂混合物组成，并且在粘合剂混合物中掺入10至40重量％的导电的非磁性粉末混合物 碳粉和60至90重量％的血小板形和球形颗粒。

公开(公告)号：US4074002A

公开(公告)日：1978-02-14

申请号：US664644

申请日：1976-03-08

申请人： Joachim Hack ,  Dieter Schaefer ,  Herbert Motz

发明人： Joachim Hack ,  Dieter Schaefer ,  Herbert Motz

IPC分类号： G11B5/708 ,  H01F10/02

CPC分类号： G11B5/708 ,  Y10S428/90 ,  Y10T428/259

摘要： Magnetic recording media comprising a base and, applied thereto, at least one firmly adhering magnetic layer based on magnetic particles dispersed in a mixture of organic binders, wherein at least the uppermost magnetic layer additionally contains non-magnetic particles of precipitated silica having a primary particle diameter of from 0.02 to 0.1.mu., a secondary particle diameter of from 2 to 4.mu. and a pH of from 5 to 8.As a result of the incorporation of such a precipitated silica into the magnetic layer, the coefficient of friction between the latter and metals remains uniformly low even after prolonged use, and no stick-slip motion occurs.

摘要翻译： 磁性记录介质包括基底，并施加至少一个基于分散在有机粘合剂混合物中的磁性颗粒的至少一个牢固粘附的磁性层，其中至少最上面的磁性层另外含有具有一次粒子的沉淀二氧化硅的非磁性颗粒 直径为0.02〜0.1μm，二次粒径为2〜4μm，pH为5〜8。

公开(公告)号：US4327139A

公开(公告)日：1982-04-27

申请号：US66556

申请日：1979-08-15

申请人： Dieter Schaefer ,  Herbert Motz ,  Dieter Mayer ,  Paul Deigner ,  Joachim Hack ,  Roland Falk

发明人： Dieter Schaefer ,  Herbert Motz ,  Dieter Mayer ,  Paul Deigner ,  Joachim Hack ,  Roland Falk

IPC分类号： C09D5/23 ,  G11B5/71 ,  G11B5/725 ,  G11B5/82 ,  B32B7/02 ,  B32B27/00

CPC分类号： G11B5/71 ,  G11B5/725 ,  Y10S428/90 ,  Y10T428/24975 ,  Y10T428/31544

摘要： A magnetic recording medium comprising a non-magnetic base and a magnetizable layer which is applied to at least one side thereof and comprises magnetic particles finely dispersed in a polymeric binder and additives, the surface of the magnetizable layer being provided with a coating of a perfluoropolyether oil mixture as a lubricant.

摘要翻译： 一种包含非磁性基体和可磁化层的磁记录介质，其被施加到其至少一侧，并且包括细分散在聚合物粘合剂中的磁性颗粒和添加剂，可磁化层的表面设置有全氟聚醚涂层 油混合物作为润滑剂。

公开(公告)号：US4320171A

公开(公告)日：1982-03-16

申请号：US150749

申请日：1980-05-19

申请人： Herbert Motz ,  August Lehner ,  Heinrich Hartmann ,  Rudolf Bachmann ,  Hans-Joerg Hartmann ,  Harald Frischmann ,  Roland Falk ,  Joachim Hack ,  Milan Velic ,  Helmut Kopke

发明人： Herbert Motz ,  August Lehner ,  Heinrich Hartmann ,  Rudolf Bachmann ,  Hans-Joerg Hartmann ,  Harald Frischmann ,  Roland Falk ,  Joachim Hack ,  Milan Velic ,  Helmut Kopke

IPC分类号： C08G18/66 ,  C09D5/23 ,  G11B5/702 ,  B32B27/40 ,  B32B5/16

CPC分类号： C08G18/6644 ,  G11B5/7021 ,  Y10S428/90 ,  Y10T428/31551 ,  Y10T428/31565 ,  Y10T428/31591 ,  Y10T428/31609

摘要： Magnetic recording media comprising a non-magnetic base and, applied thereto, a firmly adhering magnetic coating based on a finely divided magnetic pigment dispersed in a binder which contains at least 50 percent by weight of a special polyurethane elastomer, namely a thermoplastic polyurethane which is soluble in tetrahydrofuran, is free from isocyanate groups and has been manufactured from (A) 1 mole of a hydroxyl-containing polyester having a molecular weight of from 700 to 2,500, (B) from 0.3 to 3 moles of a linear aliphatic diol of 2 to 10 carbon atoms, (C) from 0.05 to 0.4 mole of a triol of 3 to 10 carbon atoms, and (D) from 1.35 to 4.7 moles of a diisocyanate of 6 to 30 carbon atoms, the amount of NCO groups being approximately equivalent to the amount of OH groups of the sum of components (A) to (C).

摘要翻译： 磁性记录介质包括非磁性基底，并施加于基于分散在粘合剂中的细碎磁性颜料的牢固粘附的磁性涂层，所述磁性颜料含有至少50重量％的特殊聚氨酯弹性体，即热塑性聚氨酯，其为 可溶于四氢呋喃中，不含异氰酸酯基团，并且由（A）1摩尔分子量为700至2,500的含羟基的聚酯制成，（B）为0.3-3摩尔的直链脂族二醇为2 至10个碳原子，（C）0.05至0.4摩尔3至10个碳原子的三醇，和（D）1.35至4.7摩尔的6至30个碳原子的二异氰酸酯，NCO基团的量约等于 相对于组分（A）至（C）的总和的OH基团的量。

公开(公告)号：US4464352A

公开(公告)日：1984-08-07

申请号：US448489

申请日：1982-12-10

申请人： Horst Autzen ,  Herbert Motz ,  Peter Rudolf ,  Wilhelm Sarnecki ,  Werner Steck ,  Guenter Vaeth

发明人： Horst Autzen ,  Herbert Motz ,  Peter Rudolf ,  Wilhelm Sarnecki ,  Werner Steck ,  Guenter Vaeth

IPC分类号： C01G49/06 ,  G11B5/706

CPC分类号： C01G49/06 ,  G11B5/70642 ,  G11B5/70652 ,  G11B5/70663 ,  C01P2004/10 ,  C01P2006/12 ,  C01P2006/42

摘要： A process for the manufacture of acicular ferrimagnetic iron oxide by converting acicular iron(III) oxide hydroxide at from 300.degree. to 650.degree. C., by treatment with an organic compound which decomposes in this temperature range in the presence of iron oxide, the iron(III) oxide hydroxide used for the reaction being a lepidocrocite which has been heat-treated at from 300.degree. to 700.degree. C.

摘要翻译： 通过用在氧化铁存在下在该温度范围内分解的有机化合物处理，将300至650℃的针状氧化铁（III）氢氧化物转化成针状亚铁磁性氧化铁的方法， 用于该反应的氧化氢氧化物（III）是在300〜700℃下进行热处理的氯铁矿石。

公开(公告)号：US4357378A

公开(公告)日：1982-11-02

申请号：US234708

申请日：1981-02-17

申请人： Guenter Vaeth ,  Rudolf Bachmann ,  Werner Senkpiel ,  Hans-Joerg Hartmann ,  Roland Falk ,  Herbert Motz

发明人： Guenter Vaeth ,  Rudolf Bachmann ,  Werner Senkpiel ,  Hans-Joerg Hartmann ,  Roland Falk ,  Herbert Motz

IPC分类号： C09D5/23 ,  G11B5/702 ,  B32B3/02

CPC分类号： G11B5/7022 ,  Y10S428/90 ,  Y10T428/31605 ,  Y10T428/31609 ,  Y10T428/31699 ,  Y10T428/31935

摘要： The invention relates to magnetic recording media comprising a non-magnetic base and, applied thereto, a firmly adhering magnetic coating based on a finely divided magnetic pigment and a special binder mixture. This binder mixture consists essentially of 20 to 90 percent by weight of an elastomeric polyurethane which is soluble in a volatile organic solvent, is practically free of isocyanate groups and has been obtained from a linear, aliphatic polyester or polyether and a diisocyanate of 6 to 24 carbon atoms, and of 10 to 80 percent by weight of a vinyl chloride copolymer which contains 50 to 90 percent by weight of vinyl chloride units and 10 to 50 percent by weight of units of one or more diesters of maleic acid with an alcohol of 1 to 3 carbon atoms, or of the reaction product of this binder mixture with a polyisocyanate of 6 to 50 carbon atoms. Magnetic coatings containing such a binder mixture are distinguished by improved surface hardness coupled with improved orientability of the magnetic particles, as a result of which such recording media are particularly suitable for modern video- and audio-recording instruments.

摘要翻译： 本发明涉及包含非磁性基底的磁记录介质，并且在其上施加基于细分磁性颜料和特殊粘合剂混合物的牢固粘附的磁性涂层。 该粘合剂混合物基本上由20至90重量％的可溶于挥发性有机溶剂的弹性体聚氨酯组成，实际上不含异氰酸酯基团，并且由线性脂族聚酯或聚醚和6至24的二异氰酸酯获得 和10至80重量％的氯乙烯共聚物，其含有50至90重量％的氯乙烯单元和10至50重量％的一种或多种马来酸二醇与醇的共聚物1 或者该粘合剂混合物与6至50个碳原子的多异氰酸酯的反应产物。 含有这种粘合剂混合物的磁性涂层的特征在于改进的表面硬度以及磁性颗粒的改进的取向性，结果这种记录介质特别适用于现代的视频和音频记录仪器。

公开(公告)号：US4001463A

公开(公告)日：1977-01-04

申请号：US597684

申请日：1975-07-21

申请人： Dieter Schaefer ,  Herbert Motz

发明人： Dieter Schaefer ,  Herbert Motz

IPC分类号： G11B5/74 ,  G11B5/845 ,  B05D3/14 ,  B05B5/00

CPC分类号： G11B5/845 ,  G11B5/74

摘要： A process and apparatus for the manufacture of magnetic discs in which the preferred direction of particle orientation is parallel to the plane of the disc and tangential to its circumference. The base discs coated with the still fluid magnetic dispersion, are introduced into a zone of magnetic flux bounded by conductors, the conducting boundary being so arranged that the current flow on one side of the base disc runs radially outwards and on the other side runs radially inwards.

公开(公告)号：US4275114A

公开(公告)日：1981-06-23

申请号：US776224

申请日：1977-03-10

申请人： Eduard Schoenafinger ,  Herbert Motz ,  Manfred Ohlinger ,  Paul Deigner ,  Werner Grau

发明人： Eduard Schoenafinger ,  Herbert Motz ,  Manfred Ohlinger ,  Paul Deigner ,  Werner Grau

IPC分类号： G11B5/712 ,  C09C1/34 ,  C09C3/12 ,  C09D5/23 ,  C09D7/12 ,  G11B5/706 ,  H01F1/11 ,  B32B5/16

CPC分类号： C09C3/12 ,  C09C1/346 ,  G11B5/70636 ,  C01P2006/42 ,  Y10S428/90 ,  Y10T428/256 ,  Y10T428/259 ,  Y10T428/31663

摘要： Chromium dioxide magnetic pigments are stabilized against loss of their magnetic properties by treating them, in aqueous and/or alcoholic suspension, with a block copolymer consisting of siloxane units and alkyleneoxy units of 2 to 4 carbon atoms, the alkyleneoxy units being bonded to the polysiloxane radical by a Si--O--C or Si--C group, in an amount of from 1 to 40% by weight based on the chromium dioxide, after which the latter is separated off and dried at from 50.degree. to 200.degree. C. The stabilized chromium dioxide magnetic pigments may be used for the manufacture of magnetic recording media exhibiting improved stability of the magnetic properties under adverse climatic conditions.

摘要翻译： 通过在水性和/或醇悬浮液中用由硅氧烷单元和2至4个碳原子的亚烷基氧基单元组成的嵌段共聚物来处理二氧化钛磁性颜料，以防它们的磁性丧失，亚烷氧基单元与聚硅氧烷键合 通过Si-OC或Si-C基团以基于二氧化铬的1至40重量％的量自由基，然后将其分离并在50至200℃下干燥。稳定的铬 二氧化物磁性颜料可用于制造在不利的气候条件下表现出改进的磁性能稳定性的磁记录介质。