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    Retarder for gypsum plaster and a process for retarding the setting of gypsum plaster by the use thereof
    1.
    发明授权
    Retarder for gypsum plaster and a process for retarding the setting of gypsum plaster by the use thereof 失效
    用于石膏膏的缓凝剂以及通过使用来延缓石膏膏的设置的方法

    公开(公告)号：US4218261A

    公开(公告)日：1980-08-19

    申请号：US41558

    申请日：1979-05-23

    申请人： Koji Takeuchi ,  Takashi Zama ,  Shizuo Iwai

    发明人： Koji Takeuchi ,  Takashi Zama ,  Shizuo Iwai

    IPC分类号： C04B24/06 ,  C04B11/14 ,  C04B11/22

    CPC分类号： C04B24/06

    摘要： A retarder for gypsum plaster is provided which consists essentially of .beta.-hydroxy-.beta.-carboxy-isocaproic acid or a water soluble salt thereof. It has powerful retarding effect toward gypsum plaster and gives a solid product having much better mechanical strength than that encountered when an alkali metal salt of citric acid or powdered glue which are the ordinary set retarders are used. A process for retarding the setting of gypsum plaster by the use thereof, is also provided.

    摘要翻译： 提供了石膏膏的缓凝剂，其基本上由β-羟基-β-羧基 - 异己酸或其水溶性盐组成。 它对石膏膏具有强大的阻滞作用，并且产生比使用普通凝固缓凝剂的柠檬酸或粉末胶的碱金属盐时遇到的机械强度好的固体产品。 还提供了一种通过使用来延缓石膏膏的设置的方法。

    Magnetic materials
    3.
    发明授权
    Magnetic materials 失效
    磁性材料

    公开(公告)号：US5429899A

    公开(公告)日：1995-07-04

    申请号：US877816

    申请日：1992-05-04

    申请人： Naoki Chiba ,  Koichiro Sagawa ,  Takashi Zama ,  Yasuhiro Kimura

    发明人： Naoki Chiba ,  Koichiro Sagawa ,  Takashi Zama ,  Yasuhiro Kimura

    IPC分类号： G03G9/08 ,  G03G9/083 ,  G03G9/087 ,  G03G9/09 ,  G03G9/10 ,  G11B5/712 ,  H01F1/06 ,  H01F1/11 ,  H01F41/16

    CPC分类号： H01F1/112 ,  G03G9/0839 ,  G11B5/712 ,  H01F1/061 ,  H01F41/16 ,  Y10S428/90 ,  Y10T428/2991 ,  Y10T428/2998

    摘要： Herein are disclosed a resin magnet excellent in flow characteristics and magnetic properties comprising a surface modified magnetic powder in respect of which the surface of the magnetic powder particles has been coated uniformly with a surface modifying mixture consisting of a titanium oligomer and an organic acid ester, and a resin; a magnetic toner excellent in printing quality and resolution comprising a fine powder prepared by mixing and pulverizing a resin and such a surface-modified magnetic powder, and a fluidizing agent; a magnetic coating material comprising such a surface-modified magnetic powder, an organic binder, and a solvent; and a magnetic recording material excellent in magnetic and surface properties obtained by coating a substrate resin with a magnetic coating material comprising such a surface-modified magnetic powder, an organic binder, and a solvent.

    摘要翻译： 本发明公开了一种流动特性和磁特性优异的树脂磁体，其包括表面改性磁性粉末，其中磁性粉末颗粒的表面均匀地涂覆有由钛低聚物和有机酸酯组成的表面改性混合物， 和树脂; 具有优异的印刷质量和分辨率的磁性调色剂，包括通过混合和粉碎树脂和这种表面改性的磁性粉末和流化剂制备的细粉末; 包含这种表面改性的磁性粉末，有机粘合剂和溶剂的磁性涂料; 以及通过用包含这种表面改性的磁性粉末，有机粘合剂和溶剂的磁性涂层材料涂覆基底树脂而获得的磁性和表面性质优异的磁记录材料。

    Agent for filler surface treatment in water
    5.
    发明授权
    Agent for filler surface treatment in water 失效
    水中填料表面处理剂

    公开(公告)号：US5421864A

    公开(公告)日：1995-06-06

    申请号：US115549

    申请日：1993-09-03

    申请人： Naoki Chiba ,  Koichiro Sagawa ,  Takashi Zama

    发明人： Naoki Chiba ,  Koichiro Sagawa ,  Takashi Zama

    IPC分类号： C09C3/08 ,  C08K9/04 ,  B22F1/02

    CPC分类号： C09C3/08 ,  C01P2004/20 ,  C01P2004/34 ,  C01P2006/22 ,  C01P2006/80 ,  Y10T428/2991 ,  Y10T428/2998

    摘要： A surface modifying agent for surface treating a filler in water which comprises 100 parts by weight of a zirconate base or/and aluminate base coupling agent(s) whose unhydrolyzable side chains have a solubility parameter (x) of 6.5-12, and 3 to 30 parts by weight of a nonionic surface active agent blended therewith having an HLB value (y) of 2-30 and containing no protonic hydrogen(s) in its molecule, wherein x and y satisfy a relationship of 4x-24.ltoreq.y.ltoreq.4x-18, as well as another surface modifying agent for the same purpose which comprises a mixture of 100 parts by weight of the above one or two coupling agents having a viscosity of 200 cps or more with 30-3000 parts by weight of a water-insoluble solvent, where the total mol fraction value (z) of the solubility parameters of the unhydrolyzable side chains of the coupling agent(s) and the solvent is 6.5-12, and 3 to 1000 parts by weight of the above nonionic surface active agent blended therewith, wherein z and y satisfy a relationship of 4z-24.ltoreq.y.ltoreq.4z-18. The inventive surface modifying agents have an excellent preservation stability and can perform water repellent treatment of fillers such as calcium carbonate in water.

    摘要翻译： 一种用于表面处理水中填料的表面改性剂，其包含100重量份不可水解侧链具有6.5-12的溶解度参数（x）的锆酸盐碱或/或铝酸盐碱偶联剂，以及3至 30重量份的具有HLB值（y）为2-30并且在其分子中不含质子氢的非离子表面活性剂，其中x和y满足4×24≤y的关系 还有用于相同目的的另一种表面改性剂，其包括100重量份上述一种或两种粘度为200cps或更高的偶联剂与30-3000重量份的混合物 的水不溶性溶剂，其中偶联剂和溶剂的不可水解侧链的溶解度参数的总摩尔分数值（z）为6.5-12，和上述3至1000重量份 与其混合的非离子表面活性剂，其中z和y满足关系 p = 4z-24