利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

18 条记录 (耗时 0.02 秒)

    Magnetic recording medium having specific subbing layers and process for recovery and processing thereof
    7.
    发明授权
    Magnetic recording medium having specific subbing layers and process for recovery and processing thereof 失效
    具有特定底层的磁记录介质及其回收和处理方法

    公开(公告)号：US5368949A

    公开(公告)日：1994-11-29

    申请号：US759293

    申请日：1991-09-13

    申请人： Akira Ushimaru ,  Hiroshi Hashimoto ,  Kazuko Hanai ,  Keiichi Suzuki

    发明人： Akira Ushimaru ,  Hiroshi Hashimoto ,  Kazuko Hanai ,  Keiichi Suzuki

    IPC分类号： G11B5/84 ,  C08J11/06 ,  C09D5/00 ,  C09D5/23 ,  C09D175/06 ,  G11B5/702 ,  G11B5/73 ,  G11B5/735 ,  G11B5/738 ,  G11B5/66

    CPC分类号： G11B5/738 ,  C08J11/06 ,  Y02W30/701 ,  Y10S428/90

    摘要： A magnetic recording medium comprising a subbing layer provided between a nonmagnetic plastic support and at least one of a magnetic layer and a backing layer, the magnetic layer and the backing layer each having a void of 40% by volume or less, and the subbing layer having higher solubility in a 0.5 wt % alkaline aqueous solution at 40.degree. C. than that in water at 40.degree. C. and being soluble in a weak alkaline aqueous solution having an initial pH of less than 13 or a low concentration alkaline aqueous solution having 0.25N or less. The subbing layer comprising a polymer containing acidic polar groups, and the subbing layer being soluble in a weak alkaline aqueous solution having an initial pH of less than 13 or a low concentration alkaline aqueous solution having 0.25N or less. A process for recovery and processing of a magnetic recording medium, the process comprising the steps of: (1) cutting a magnetic recording medium comprising a nonmagnetic plastic support having thereon a magnetic layer and/or a backing layer each having a void of 40% by volume or less; (2) dipping pieces of the magnetic recording medium in a weak alkali having an initial pH of less than 13 or a low concentration alkaline aqueous solution having 0.25N or less with stirring so that a subbing layer in the pieces having higher solubility in an alkaline aqueous solution than that in water is dissolved therein to peel off the magnetic layer and/or the backing layer from the nonmagnetic plastic support, and (3) separating the magnetic layer and/or the backing layer from the nonmagnetic plastic support.

    摘要翻译： 一种磁记录介质，包括设置在非磁性塑料载体和磁性层和背衬层中的至少一个之间的底层，所述磁性层和背衬层各自具有40体积％或更小的空隙，并且所述底层 在40℃的0.5重量％碱性水溶液中的溶解度高于在40℃的水中的溶解度，并且可溶于初始pH小于13的弱碱性水溶液或具有低浓度碱性水溶液 0.25N以下。 所述底层包含含有酸性极性基团的聚合物，并且所述底层可溶于初始pH小于13的弱碱性水溶液或0.25N以下的低浓度碱性水溶液。 一种用于回收和处理磁记录介质的方法，该方法包括以下步骤：（1）切割磁记录介质，其包含非磁性塑料载体，其上具有磁性层和/或背衬层，每层具有40％的空隙， 体积以下; （2）在初始pH小于13的弱碱中浸渍磁记录介质片，或者在搅拌下将浓度为0.25N以下的低浓度碱性水溶液浸渍，使得在碱中具有较高溶解度的片中的底层 水溶液溶解在其中以从非磁性塑料载体剥离磁性层和/或背衬层，以及（3）将磁性层和/或背衬层与非磁性塑料载体分离。

    Magnetic recording medium comprising ferromagnetic particles having crystallite size of less than 450 angstroms and a specified polyurethane binder
    8.
    发明授权
    Magnetic recording medium comprising ferromagnetic particles having crystallite size of less than 450 angstroms and a specified polyurethane binder 失效
    包含微晶尺寸小于450埃的铁磁颗粒和特定聚氨酯粘合剂的磁记录介质

    公开(公告)号：US5254404A

    公开(公告)日：1993-10-19

    申请号：US884273

    申请日：1992-05-13

    申请人： Hiroshi Hashimoto ,  Akira Ushimaru

    发明人： Hiroshi Hashimoto ,  Akira Ushimaru

    IPC分类号： G11B5/702 ,  G11B5/00

    CPC分类号： G11B5/7021 ,  G11B5/7022 ,  Y10S428/90 ,  Y10T428/25 ,  Y10T428/256 ,  Y10T428/257 ,  Y10T428/31609

    摘要： A magnetic recording medium is disclosed, comprising a non-magnetic support having thereon at least one magnetic recording layer comprising a dispersion of ferromagnetic particles in a binder, said binder comprising the combination of a polyisocyanate and a polyurethane binder comprising at least one terminal hydroxyl group at each end of the polyurethane molecule, said polyurethane binder being prepared by reacting (a) a polyurethane prepolymer comprising at least one terminal isocyanate group at each end of the polyurethane prepolymer molecule, said polyurethane prepolymer having a glass transition temperature of at least 0.degree. C. and containing a polar group, with (b) a compound comprising at least one terminal hydroxyl group at each end of the polymer molecule and having a glass transition temperature of -30.degree. C. or less.

    摘要翻译： 公开了一种磁记录介质，其包括其上具有至少一个包含铁磁颗粒在粘合剂中的分散体的磁记录层的非磁性载体，所述粘合剂包括多异氰酸酯和包含至少一个末端羟基的聚氨酯粘合剂的组合 在聚氨酯分子的两端，所述聚氨酯粘合剂通过使（a）在聚氨酯预聚物分子的每一端包含至少一个末端异氰酸酯基团的聚氨酯预聚物，所述聚氨酯预聚物的玻璃化转变温度至少为0℃ 并且含有极性基团，其中（b）在聚合物分子的每个末端具有至少一个末端羟基并且具有-30℃或更低的玻璃化转变温度的化合物。

    Light sensitive composition for black matrix, substrate for color filter, and liquid crystal display
    9.
    发明授权
    Light sensitive composition for black matrix, substrate for color filter, and liquid crystal display 失效
    用于黑色矩阵的光敏组合物，滤色器用基板和液晶显示器

    公开(公告)号：US5626796A

    公开(公告)日：1997-05-06

    申请号：US385884

    申请日：1995-02-09

    申请人： Naoyuki Tsujimura ,  Toshihiro Ueki ,  Akira Ushimaru ,  Kesanao Kobayashi

    发明人： Naoyuki Tsujimura ,  Toshihiro Ueki ,  Akira Ushimaru ,  Kesanao Kobayashi

    IPC分类号： G02B5/20 ,  G02F1/1335 ,  G03F7/00 ,  G03F7/004 ,  G03F7/027 ,  G03F7/028 ,  F21V9/00

    CPC分类号： G03F7/0007 ,  G02F1/133512 ,  G03F7/004

    摘要： A light-sensitive composition for forming a black matrix comprises (a) a photopolymerizable unsaturated compound, (b) a photopolymerization initiator, (c) a binder and (d) a pigment, wherein the amount of monovalent metallic cations present in the pigment as impurities is not more than 5 ppm; a black matrix is formed from the composition; a color filter substrate comprises a transparent substrate and a color filter formed thereon, wherein it further comprises the foregoing black matrix formed thereon; and a liquid crystal display device comprises an array substrate provided thereon with display electrodes and switching elements, a color filter substrate, common electrodes and a liquid crystal injected in the space between the array substrate and the color filter substrate, wherein it further comprises the foregoing black matrix formed on the switching elements or on the color filter substrate. The black matrix shows desired shading properties without impairing the quality of driving elements even when it is directly formed thereon. Moreover, the surface area of the black matrix can be minimized and the opening of the picture elements can be increased.

    摘要翻译： 用于形成黑色基体的感光性组合物包含（a）光聚合性不饱和化合物，（b）光聚合引发剂，（c）粘合剂和（d）颜料，其中存在于颜料中的一价金属阳离子的量为 杂质不超过5ppm; 从组合物形成黑色矩阵; 滤色器基板包括透明基板和形成在其上的滤色器，其中还包括形成在其上的前述黑矩阵; 并且液晶显示装置包括其上设置有显示电极和开关元件的阵列基板，注入到阵列基板和滤色器基板之间的空间中的滤色器基板，公共电极和液晶，其中还包括前述 黑矩阵形成在开关元件上或滤色器基板上。 即使直接在其上形成，黑色矩阵也不会影响驱动元件的质量，而显示出期望的阴影特性。 此外，黑矩阵的表面积可以最小化，并且可以增加图像元素的打开。