公开(公告)号：US4477531A

公开(公告)日：1984-10-16

申请号：US396238

申请日：1982-07-08

申请人： Robert Kohler ,  Burkhard Nippe ,  Heinrich Kober ,  Karlchristian Schilffarth ,  Walter Meckel ,  Bernd Quiring

发明人： Robert Kohler ,  Burkhard Nippe ,  Heinrich Kober ,  Karlchristian Schilffarth ,  Walter Meckel ,  Bernd Quiring

IPC分类号： C09D5/23 ,  C09D127/04 ,  C09D127/06 ,  C09D129/00 ,  C09D129/04 ,  C09D133/04 ,  C09D175/06 ,  G11B5/702 ,  G11B5/708 ,  G11B5/68 ,  B32B27/40

CPC分类号： G11B5/7021 ,  Y10S428/90 ,  Y10T428/31609 ,  Y10T428/31935 ,  Y10T428/31942

摘要： The present invention relates to a magnetic storage medium consisting of a non-magnetic layer support and, applied thereto, a binder-containing magnetic layer, the binder consisting of from 25 to 100% of a thermoplastic polyurethane substantially free from reactive terminal groups obtained by reacting a linear polyester of at least one dicarboxylic acid containing from 2 to 8 carbon atoms and/or hydroxy carboxylic acid containing from 4 to 6 carbon atoms and at least one glycol containing from 2 to 6 carbon atoms, the polyester having a molecular weight of from 1200 to 6000, at least one diisocyanate and a mixture of at least two glycols containing from 2 to 20 carbon atoms, the molar fraction of the individual components not exceeding 0.8. The polyurethane has a hardness of from 80 to 100 Shore A, a tensile strength of from 30 to 75 MPa and a breaking elongation of from 320 to 520%.

摘要翻译： 本发明涉及一种由非磁性层载体组成的磁存储介质，并在其上施加含粘合剂的磁性层，该粘合剂由25-100％的热塑性聚氨酯组成，其基本上不含由 使包含2至8个碳原子的至少一种二羧酸和/或含有4至6个碳原子的羟基羧酸和至少一种含有2至6个碳原子的二醇的线性聚酯反应，所述聚酯的分子量为 1200至6000，至少一种二异氰酸酯和至少两种含有2-20个碳原子的二醇的混合物，各组分的摩尔分数不超过0.8。 聚氨酯的硬度为80至100肖氏A，拉伸强度为30至75MPa，断裂伸长率为320至520％。

公开(公告)号：US4404253A

公开(公告)日：1983-09-13

申请号：US352208

申请日：1982-02-25

申请人： Robert Kohler ,  Karlchristian Schilffarth ,  Heinrich Kober ,  Burkhard Nippe

发明人： Robert Kohler ,  Karlchristian Schilffarth ,  Heinrich Kober ,  Burkhard Nippe

IPC分类号： C09D5/23 ,  G11B5/70 ,  G11B5/702 ,  G11B5/73 ,  G11B5/842 ,  H01F10/02

CPC分类号： G11B5/7021 ,  G11B5/7013 ,  Y10S428/90 ,  Y10T428/254 ,  Y10T428/257 ,  Y10T428/31609

摘要： Magnetic recording medium using water as dispersion medium. The magnetic layer comprises as binder an aqueous dispersion of polyurethane having functional groups capable of salt formation and a magnetic pigment. The volumetric ratio of magnetic pigment to polyurethane in terms of solids content is in the range of 0.7:1 to 1.4:1.

摘要翻译： 使用水作为分散介质的磁记录介质。 磁性层包括作为粘合剂的具有能够形成盐的官能团的聚氨酯的水性分散体和磁性颜料。 磁性颜料与聚氨酯的固体含量的体积比在0.7:1至1.4:1的范围内。

公开(公告)号：US4497007A

公开(公告)日：1985-01-29

申请号：US357828

申请日：1982-03-12

申请人： Joachim Greiner ,  Burkhard Nippe

发明人： Joachim Greiner ,  Burkhard Nippe

IPC分类号： G11B11/10 ,  G03G19/00 ,  G11B11/105 ,  G11B5/32 ,  G01D15/06 ,  G11B9/00 ,  G11C11/42

CPC分类号： G03G19/00 ,  G11B11/105

摘要： This invention relates to a magneto-optical storage and playback process for travelling information carriers, by recording on a magnetizable information carrier (1) in the form of a tape, disc or roller while the carrier is in motion, said information carrier having information areas which are larger than 0.2 .mu.m and smaller than 20 .mu.m in one direction of the information plane, the process being carried out by the production of a geometrical structure (4) by the action of the magnetic fields of the recorded information on particles whose greatest length is less than 0.1 .mu.m, preferably 0.02 .mu.m, and by optical scanning of these structures in which light of wavelength 0.38 to 0.8 .mu.m is diffracted on the surface of the moving information carrier (1) and diffraction images are produced which serve for the interpretation of the information.

摘要翻译： 本发明涉及一种用于旅行信息载体的磁光存储和重放过程，通过在载体运动时以磁带，盘或辊的形式在可磁化信息载体（1）上进行记录，所述信息载体具有信息区 其在信息平面的一个方向上大于0.2μm并且小于20μm，该过程通过由记录的信息的磁场的作用生成几何结构（4）来进行，该粒子的粒子 最大长度小于0.1μm，优选为0.02μm，通过光学扫描波长为0.38〜0.8μm的光，在移动信息载体（1）的表面上衍射，产生衍射图像， 用于解释信息。

公开(公告)号：US4465608A

公开(公告)日：1984-08-14

申请号：US391504

申请日：1982-06-24

申请人： Johannes Gerum ,  Burkhard Nippe ,  Heinrich Kober ,  Robert Kohler

发明人： Johannes Gerum ,  Burkhard Nippe ,  Heinrich Kober ,  Robert Kohler

IPC分类号： G11B5/708 ,  C08K3/00 ,  C08K3/22 ,  C08K9/00 ,  C08K9/08 ,  C08K11/00 ,  C08L1/00 ,  C08L27/00 ,  C08L33/00 ,  C08L33/02 ,  C09C1/62 ,  C09D5/23 ,  C09D7/12 ,  G11B5/70 ,  H01F1/44 ,  C04B35/04 ,  H01F1/00

CPC分类号： H01F1/442 ,  G11B5/7013 ,  H01F1/44 ,  Y10S428/90 ,  Y10T428/31507 ,  Y10T428/31511 ,  Y10T428/31609

摘要： This invention relates to the addition of organic boron compounds, prepared by either reacting boric acid with polyhydric alcohols having a total of 5 or more neighbouring OH groups per boron atom and then with polyethylene oxide in a mol ratio of 1:40, based on 1 mol of borate which is obtained, and with a carboxylic acid having from 8 to 22 carbon atoms or reacting boric acid first with polyhydric alcohols having a total of 5 to 11 neighbouring OH groups per boron atoms, and the with a carboxylic acid having from 8 to 22 carbon atoms, said boron compound being added, in a quantity of from 3 to 12, in particular from 3 to 6 parts, by weight, based on 100 parts, by weight, of magnetic pigments, and in particular of metal powders, to the grinding operation of the magnetic pigment dispersion and then processing in a known manner. The necessary degree of dispersion is achieved after a short grinding time compared to known dispersing agents, during which time the pigment particles which are initially lying together are separated into monodisperse individual particles. The favorable effect is expressed by improved alignment values in the finished magnetic tape.

摘要翻译： 本发明涉及通过使硼酸与每个硼原子总共具有5个或更多个相邻OH基的多元醇然后与摩尔比为1:40的聚环氧乙烷反应制备的有机硼化合物，基于1 摩尔硼酸盐和具有8至22个碳原子的羧酸或硼酸首先与每个硼原子总共具有5至11个相邻OH基团的多元醇反应，并且具有8个 至22个碳原子，相对于100重量份的磁性颜料，特别是金属粉末，所述硼化合物的添加量为3至12重量％，特别是3至6重量份， 对磁性颜料分散体的研磨操作，然后以已知的方式进行加工。 与已知的分散剂相比，​​在短的研磨时间之后实现必要的分散度，在此期间最初位于一起的颜料颗粒分离成单分散的单个颗粒。 通过改善成品磁带中的对准值来表示有利的效果。

公开(公告)号：US5009925A

公开(公告)日：1991-04-23

申请号：US256131

申请日：1988-10-05

申请人： Ernst Grigat ,  Walter Meckel ,  Burkhard Nippe

发明人： Ernst Grigat ,  Walter Meckel ,  Burkhard Nippe

IPC分类号： G11B5/842 ,  G11B5/70 ,  G11B5/84 ,  G11B5/845

CPC分类号： G11B5/84 ,  G11B5/7013 ,  Y10S428/90

摘要： Magnetic recording carriers having improved mechanical properties are obtained by using, as dispersing agents, compounds corresponding to the general formula ##STR1## which are attached to the magnetic pigment by their SO.sub.3 H group and which have reactive groups by which they are linked to the reactive groups of the polymeric binder through a difunctional or higher functional isocyanate.

摘要翻译： 具有改善的机械性能的磁记录载体是通过使用与通式（IMAGE）相对应的化合物作为分散剂，它们通过SO 3 H基与磁性颜料连接并具有与反应性基团连接的反应性基团 的聚合物粘合剂通过双官能或更高官能的异氰酸酯。

公开(公告)号：US4687709A

公开(公告)日：1987-08-18

申请号：US915783

申请日：1986-10-06

申请人： Hermann Brinkmeyer ,  Gerhard Hubler ,  Hermann Perrey ,  Burkhard Nippe ,  Heinrich Kober

发明人： Hermann Brinkmeyer ,  Gerhard Hubler ,  Hermann Perrey ,  Burkhard Nippe ,  Heinrich Kober

IPC分类号： G11B5/70 ,  G11B5/702 ,  H01F10/02

CPC分类号： G11B5/7013 ,  G11B5/7026 ,  Y10S428/90 ,  Y10T428/31609 ,  Y10T428/3179 ,  Y10T428/31935

摘要： This invention relates to a magnetic recording carrier in which the magnetic layer and/or the backing layer contains, in addition to the usual additives, radiation hardenable dispersing agents based on ethylenically unsaturated phosphoric acid ester mixtures capable of forming bataine type stuctures and consisting of reaction products of (A) an acrylic acid ester and/or oligo acrylate containing 1 OH group per molecule, (B) a tertiary alkylamine containing 1 OH group per molecule and (C) phosphorus pentoxide, the reaction products having acid numbers below 200.

摘要翻译： 磁记录载体本发明涉及一种磁记录载体，其中磁性层和/或背衬层除通常的添加剂外还含有基于烯键式不饱和磷酸酯混合物的辐射可硬化分散剂，其能够形成巴淡因型结构并由反应 （A）每分子含有1个OH基团的丙烯酸酯和/或低聚丙烯酸酯的产物，（B）每分子含有1个OH基团的叔烷基胺和（C）五氧化二磷，反应产物的酸值低于200。

公开(公告)号：US4677030A

公开(公告)日：1987-06-30

申请号：US690043

申请日：1985-01-09

申请人： Johannes Gerum ,  Burkhard Nippe ,  Walter Meckel

发明人： Johannes Gerum ,  Burkhard Nippe ,  Walter Meckel

IPC分类号： C08G18/50 ,  C09D5/23 ,  G11B5/702

CPC分类号： G11B5/7021 ,  C08G18/5027 ,  Y10S428/90 ,  Y10T428/256 ,  Y10T428/257 ,  Y10T428/31609

摘要： What is claimed is a magnetic storage medium in which the polyurethane binder system forms a three-dimensional network independently of reactive low molecular weight substances present on the magnetic pigment or in the dispersion and the production of such a storage medium. The binder in the colored magnetic layer consists of a reaction product of polyisocyanates having an average functionality of from 2.1 to 4 (A) with predominantly difunctional aromatic amino-terminated polyurethanes having an average molecular weight of at least 10,000 (B) and optionally one or more hydroxyl group-containing polyesters having an OH number of from 100 to 450 (C), and/or predominantly difunctional aromatic polyamines having a molecular weight of from 100 to 400 (D) the ratio of isocyanate groups present in (A) to the isocyanate reactive groups present in (B), (C) and (D) being from 0.3:1 to 20:1, preferably from 0.8:1 to 20:1. With this binder system, it has been possible to achieve direct linkage of the polymeric binder chains and to suppress side reactions. This has enabled a soft polyurethane agent to be used, with the result of smooth dispersion of the magnetic lacquer and hence increase in the signal/noise ratio of the magnetic recording medium. The subsequent cross-linking which takes place according to the present invention enables the mechanical properties of the recording medium to be adjusted to the exact result required after the magnetic lacquer has been applied to a support.

摘要翻译： 所要求保护的是磁性存储介质，其中聚氨酯粘合剂体系形成独立于存在于磁性颜料上或在分散体中的反应性低分子量物质和这种存储介质的生产的三维网络。 着色磁性层中的粘合剂由平均官能度为2.1至4（A）的多异氰酸酯与主要为双官能芳族氨基封端的聚氨酯（平均分子量为至少10,000（B））和任选的一种或多种 更多含羟基的聚酯，具有100-450℃（C），和/或主要是分子量为100-400的二官能芳族多胺（D）（A）中存在的异氰酸酯基与 （B），（C）和（D）中存在的异氰酸酯反应性基团为0.3：1至20：1，优选为0.8：1至20：1。 使用该粘合剂体系，可以实现聚合物粘合剂链的直接连接并抑制副反应。 这使得可以使用软质聚氨酯试剂，结果是磁性漆的光滑分散，从而增加了磁记录介质的信噪比。 根据本发明发生的随后的交联使得能够将磁性漆施加到载体上之后，将记录介质的机械性能调节到所需的精确结果。

公开(公告)号：US4578280A

公开(公告)日：1986-03-25

申请号：US583727

申请日：1984-02-27

申请人： Joachim Greiner ,  Burkhard Nippe

发明人： Joachim Greiner ,  Burkhard Nippe

IPC分类号： C09D5/23 ,  C09D101/18 ,  C09D127/04 ,  C09D127/06 ,  C09D167/00 ,  C09D175/00 ,  C09D175/04 ,  G11B5/845 ,  B05D3/14

CPC分类号： G11B5/845

摘要： This invention relates to a process for the production of a magnetic recording material having at least one layer of magnetic oxidic and/or metallic needle shaped pigments with dimensional anisotropy and/or some other type of magnetic anisotropy, e.g. crystalline, dielectric or magnetic field induced anisotropy, which process may be used to produce a layer having perpendicular anisotropy or a layer which passes from an initial perpendicular anisotropy to an isotropic distribution of the preferential magnetic axes of the pigments. According to the present process, the magnetic dispersion, after having been applied to the layer support, is subjected to an external magnetic field while still in the state of a liquid suspension, with the result that the pigments move with the preferential axis thereof into the perpendicular axis of the layer, and the pigments are subsequently fixed by drying.

摘要翻译： 本发明涉及一种制备磁记录材料的方法，该磁记录材料具有至少一层具有尺寸各向异性的磁性氧化和/或金属针状颜料和/或一些其他类型的磁各向异性，例如， 晶体，电介质或磁场诱导的各向异性，该方法可用于产生具有垂直各向异性的层或从初始垂直各向异性到颜料的优先磁轴的各向同性分布的层。 根据本方法，在施加到层载体上之后的磁性分散体仍然处于液体悬浮液的状态下经受外部磁场，结果是颜料以其优先轴线移动到 然后通过干燥固定颜料。

公开(公告)号：US4323621A

公开(公告)日：1982-04-06

申请号：US2955

申请日：1979-01-12

申请人： Heinrich Kober ,  Burkhard Nippe ,  Bernhard Seidel

发明人： Heinrich Kober ,  Burkhard Nippe ,  Bernhard Seidel

IPC分类号： G11B5/716 ,  C09D5/23 ,  C09D7/12 ,  G11B5/706 ,  H01F1/11 ,  G11B5/70

CPC分类号： G11B5/70689 ,  Y10S428/90 ,  Y10T428/24975 ,  Y10T428/257

摘要： A magnetic recording material, preferably for tape recorders which are designed for the iron oxide bias setting and for a playback equalization of 120 .mu.s, consisting of a support and at least two layers containing magnetic pigments and binders and differing in coercivity and layer thickness, the uppermost layer containing as acicular, magnetic pigment thermally stabilized magnetite containing from 0.1 to 5% by weight of Cd, Pb, Ca, Mg, Zn, Al, Cr, W, P and/or B based on Fe.sub.3 O.sub.4. The pigments have an average crystallite size of from 30 to 35 nm and a coercivity of from 28 to 36 KA/m. These double-layer tapes have a low bias level and a high dynamic range despite a playback equalization of 120 .mu.s.

摘要翻译： 一种磁记录材料，优选用于设计用于铁氧化物偏置设置和用于120μs的重放均衡的磁带记录器，其由支撑体和至少两层含有磁性颜料和粘合剂并且矫顽力和层厚度不同组成， 最上层含有基于Fe 3 O 4的含有0.1〜5重量％的Cd，Pb，Ca，Mg，Zn，Al，Cr，W，P和/或B的针状磁性颜料热稳定磁铁矿。 颜料的平均微晶尺寸为30〜35nm，矫顽力为28〜36KA / m。 尽管120倍的重放均衡，这些双层磁带具有低偏置电平和高动态范围。