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18 条记录 (耗时 0.018 秒)

    Method for the preparation of polyhedral particles of a rare earth ammonium double oxalate
    1.
    发明授权
    Method for the preparation of polyhedral particles of a rare earth ammonium double oxalate 失效
    制备稀土铵双草酸盐多面体颗粒的方法

    公开(公告)号：US5644037A

    公开(公告)日：1997-07-01

    申请号：US433925

    申请日：1995-05-02

    申请人： Masami Kaneyoshi ,  Isamu Fujioka ,  Shigeru Sakai

    发明人： Masami Kaneyoshi ,  Isamu Fujioka ,  Shigeru Sakai

    IPC分类号： C01F17/00 ,  C07C51/41 ,  C07F5/00 ,  C04B35/58 ,  C09K11/08

    CPC分类号： C07C51/412

    摘要： Disclosed is a method for the preparation of particles of a rare earth ammonium double oxalate by mixing a first aqueous solution of ammonium oxalate and a second aqueous solution of a water-soluble rare earth salt. The double oxalate particles have a polyhedral particle configuration with a uniform particle size distribution, from which a rare earth oxide powder of a polyhedral particle configuration with good flowability can be obtained by calcination, when the first and second aqueous solutions are prepared under exact control of the concentrations of the respective ionic species and the aqueous slurry containing the precipitates of the double oxalate is subjected to an aging treatment during which changes take place in the particle morphology and in the crystallographic structure of the double oxalate particles.

    摘要翻译： 公开了通过混合草酸铵的第一水溶液和水溶性稀土盐的第二水溶液来制备双草酸稀土铵的颗粒的方法。 双草酸盐颗粒具有均匀粒度分布的多面体颗粒构型，当第一和第二水溶液在精确控制下制备第一和第二水溶液时，可以通过煅烧获得具有良好流动性的多面体颗粒构型的稀土氧化物粉末 对含有双草酸盐的析出物的各离子种类和含水浆料的浓度进行时效处理，在该处理期间，在双重草酸盐颗粒的颗粒形态和晶体结构中发生变化。

    Rare earth oxide particles and method for preparation thereof
    2.
    发明授权
    Rare earth oxide particles and method for preparation thereof 有权
    稀土氧化物颗粒及其制备方法

    公开(公告)号：US06387339B1

    公开(公告)日：2002-05-14

    申请号：US09709424

    申请日：2000-11-13

    申请人： Masami Kaneyoshi ,  Shigeru Sakai

    发明人： Masami Kaneyoshi ,  Shigeru Sakai

    IPC分类号： C01F1700

    CPC分类号： C01F17/0043 ,  C01P2002/60 ,  C01P2006/14

    摘要： Disclosed is an improvement in the method for the preparation of a rare earth oxide powder particularly suitable as a base material of luminescence phosphors. The improvement comprises, in a method comprising the steps of mixing aqueous solutions of a rare earth salt and oxalic acid to precipitate the rare earth oxalate, collecting the precipitates by filtration, drying the precipitates and calcining the dried precipitates, conducting the oxalate-precipitating reaction at a temperature at 15° C. or lower and freezing the wet precipitates at −25° C. or lower prior to vacuum drying to give dried particles of the rare earth oxalate containing 20% by weight or less of water including the water of crystallization. The particles of the thus obtained rare earth oxide powder are characterized by the small pore volume and average crystallite diameter.

    摘要翻译： 公开了特别适合作为发光荧光体的基材的稀土类氧化物粉末的制备方法的改进。 改进之处在于包括以下步骤：将稀土盐和草酸的水溶液混合以沉淀草酸稀土，通过过滤收集沉淀物，干燥沉淀物并煅烧干燥的沉淀物，进行草酸盐沉淀反应 在15℃或更低的温度下，在-25℃或更低温度下将湿沉淀物冷冻，然后真空干燥，得到包含20重量％或更少的水的包含结晶水的稀土草酸盐的干燥颗粒 。 由此获得的稀土氧化物粉末的颗粒的特征在于孔的体积小和平均微晶直径。

    Method for the preparation of globular particles of a rare earth oxide
    3.
    发明授权
    Method for the preparation of globular particles of a rare earth oxide 失效
    制备稀土氧化物球状颗粒的方法

    公开(公告)号：US5545386A

    公开(公告)日：1996-08-13

    申请号：US529640

    申请日：1995-09-18

    申请人： Masami Kaneyoshi ,  Shigeru Sakai

    发明人： Masami Kaneyoshi ,  Shigeru Sakai

    IPC分类号： C01F17/00 ,  C09K11/77 ,  C09K11/78

    CPC分类号： C09K11/7701 ,  C01F17/0043 ,  C01P2004/32 ,  C01P2004/61 ,  C01P2004/62 ,  C01P2006/60

    摘要： Proposed is a method for the preparation of a rare earth oxide powder consisting of particles having a globular particle configuration to be suitable as a base material of phosphors. The method comprises the steps of mixing an aqueous solution of a rare earth salt and an aqueous alkaline solution, e.g., ammonia water, to precipitate a rare earth hydroxide which is collected, washed with water and calcined to be converted into the oxide powder. Characteristically, the precipitation reaction of the rare earth hydroxide is carried out in the presence of a nitrogen-containing chelating agent such as triethanolamine in the aqueous medium in a controlled amount.

    摘要翻译： 提出一种制备稀土氧化物粉末的方法，所述稀土氧化物粉末由球状颗粒构型的颗粒组成，以适合作为磷光体的基材。 该方法包括以下步骤：将稀土盐水溶液和碱性水溶液（例如氨水）混合，以沉淀收集的稀土氢氧化物，用水洗涤并煅烧以转化为氧化物粉末。 特别地，稀土氢氧化物的沉淀反应在含水介质中的含氮螯合剂如三乙醇胺的存在下以受控的量进行。

    TITANIUM OXIDE POWDER, DISPERSION THEREOF, AND METHOD OF PREPARING THE SAME
    4.
    发明申请
    TITANIUM OXIDE POWDER, DISPERSION THEREOF, AND METHOD OF PREPARING THE SAME 审中-公开
    氧化钛粉，其分散体及其制备方法

    公开(公告)号：US20100123106A1

    公开(公告)日：2010-05-20

    申请号：US12613191

    申请日：2009-11-05

    申请人： Masami Kaneyoshi

    发明人： Masami Kaneyoshi

    IPC分类号： F21V9/04 ,  C01G23/04

    CPC分类号： C01G23/0536 ,  C01G33/00 ,  C01G35/00 ,  C01P2004/52 ,  C01P2004/61 ,  C01P2004/62 ,  C01P2006/60

    摘要： A titanium oxide powder containing 0.2 to 25% by weight of niobium or tantalum is provided. The titanium oxide powder has a diffuse reflectance spectrum such that the reflectance at the wavelength at which the reflectance is maximum in the visible range is at least 50%, and the reflectance in infrared range of 1000 to 2500 nm is equal to or less than half of the maximum reflectance of the visible range. The present invention is capable of producing a titanium oxide fine particle powder as well as its dispersion having infrared cutoff property which can be used in producing an infrared cutoff film, transparent heat blocking film, and the like. The powder contains inexpensive harmless titanium oxide as its main component.

    摘要翻译： 提供含有0.2〜25重量％的铌或钽的氧化钛粉末。 氧化钛粉末具有漫反射光谱，使得在可见光范围内反射率最大的波长处的反射率为至少50％，红外范围为1000〜2500nm的反射率等于或小于一半 的可见范围的最大反射率。 本发明能够制造可用于制造红外截止膜，透明阻热膜等的具有红外阻隔性的氧化钛微粒粉末及其分散体。 该粉末含有廉价无害的氧化钛作为其主要成分。

    Zirconium or hafnium-containing oxides
    5.
    发明授权
    Zirconium or hafnium-containing oxides 失效
    含锆或含铪的氧化物

    公开(公告)号：US07390436B2

    公开(公告)日：2008-06-24

    申请号：US11099586

    申请日：2005-04-06

    申请人： Masami Kaneyoshi

    发明人： Masami Kaneyoshi

    IPC分类号： C09K11/81

    CPC分类号： C09K11/676 ,  C09K11/7706 ,  C09K11/7709

    摘要： Oxo-acid salts, double oxides or complex oxides contain 0.001-10 atom % of Zr or Hf. They emit near-ultraviolet radiation when excited with vacuum-ultraviolet radiation.

    摘要翻译： 氧酸盐，双氧化物或复合氧化物含有0.001-10原子％的Zr或Hf。 当用真空紫外线辐射激发时，它们发射近紫外辐射。

    Rare earth phosphate and making method
    10.
    发明授权
    Rare earth phosphate and making method 失效
    稀土磷酸盐和制法

    公开(公告)号：US07314581B2

    公开(公告)日：2008-01-01

    申请号：US11099597

    申请日：2005-04-06

    申请人： Masami Kaneyoshi

    发明人： Masami Kaneyoshi

    IPC分类号： C09K11/81

    CPC分类号： C01B25/37 ,  C01B25/45 ,  C09K11/7709 ,  C09K11/7777

    摘要： A rare earth phosphate represented by the formula: RPO4 wherein R is a rare earth element selected from Sc, Y, and lanthanoids of atomic numbers 57 to 71, wherein Mn substitutes for 0.01-15 atom % of R emits blue light when excited by vacuum-UV radiation.

    摘要翻译： 由下式表示的稀土磷酸盐：RPO 4其中R是选自Sc，Y，和原子序号57至71的镧系元素的稀土元素，其中Mn代替0.01-15原子％ 当通过真空UV辐射激发时，R发出蓝光。