METHOD FOR PRODUCING OXIDE PARTICLES WITH CONTROLLED COLOR CHARACTERISTICS

    公开(公告)号:EP3466886A1

    公开(公告)日:2019-04-10

    申请号:EP17806856.5

    申请日:2017-06-02

    摘要: With an aim to provide a method for producing an oxide particle with controlled color characteristics and also provide an oxide particle with controlled color characteristics, the present invention provides a method for producing an oxide particle, wherein the color characteristics of the oxide particle are controlled by controlling a ratio of an M-OH bond between an element (M) and a hydroxide group (OH) or an M-OH bond/M-O bond ratio, where the element (M) is one element or plural different elements other than oxygen or hydrogen included in the oxide particle selected from metal oxide particles and semi-metal oxide particles. According to the present invention, by controlling the M-OH bond or the M-OH bond/M-O bond ratio of the metal oxide particle or the semi-metal oxide particle, the oxide particle with controlled color characteristics of any of reflectance, transmittance, molar absorption coefficient, hue, and saturation can be provided.

    METHOD FOR MODIFYING NICKEL POWDER AND METHOD FOR PRODUCING SAME
    7.
    发明公开
    METHOD FOR MODIFYING NICKEL POWDER AND METHOD FOR PRODUCING SAME 审中-公开
    镍粉的改良方法及其制造方法

    公开(公告)号:EP3296040A1

    公开(公告)日:2018-03-21

    申请号:EP15892529.7

    申请日:2015-05-15

    IPC分类号: B22F1/00

    摘要: The purpose of the present invention is to provide a method for modifying nickel microparticles weight loss of which occurs due to heat treatment such as burning and a method for producing nickel microparticles comprising the modification method.
    Provided is a method for modifying nickel microparticles comprising a step of making an acid and/or hydrogen peroxide act on nickel microparticles weight loss of which occurs due to heat treatment such as burning and a method for producing nickel microparticles comprising the modification method. The step of making an acid and/or hydrogen peroxide act reduces a rate of weight loss due to heat treatment of the nickel microparticles, nitric acid or a mixture of acids that include nitric acid is preferably used as the acid, and the nickel microparticles and acid and/or hydrogen peroxide are preferably made to act in a ketonic solvent.

    摘要翻译: 本发明的目的是提供一种用于改性由于诸如燃烧的热处理而发生重量损失的镍微粒的方法以及包括该改性方法的用于生产镍微粒的方法。 本发明提供一种镍微粒的改性方法,该方法包括使酸和/或过氧化氢作用于由于烧制等热处理而发生重量损失的镍微粒的工序和使用该改性方法的镍微粒的制造方法。 使酸和/或过氧化氢发挥作用的步骤降低了由于镍微粒的热处理导致的重量损失率,优选使用包含硝酸的硝酸或酸的混合物作为酸,并且镍微粒和 优选使酸和/或过氧化氢在酮溶剂中起作用。

    FINE PARTICLE PRODUCTION METHOD
    9.
    发明公开

    公开(公告)号:EP3112017A4

    公开(公告)日:2018-01-03

    申请号:EP15752000

    申请日:2015-02-18

    发明人: ENOMURA MASAKAZU

    摘要: This fine particle production method involves a dissolving step in which a stirrer having a rotating stirring blade is used to dissolve at least one type of fine particle raw material in a solvent to obtain a fine particle raw material solution, and a precipitation step in which the fine particle raw material solution and at least one type of precipitation solvent for precipitating the fine particle raw material from the fine particle raw material solution are introduced between at least two treatment surfaces which are arranged oppositely one another, can move closer to and farther apart from one another, and at least one of which can rotate relative to the other, and the fine particle raw material solution and the at least one type of precipitation solvent are mixed in a thin film fluid formed between the at least two treatment surfaces, and the fine particles are precipitated. The stirring energy is determined by the stirring time conditions of the stirrer, the circumferential velocity conditions of the stirring blade, and the temperature conditions of the fine particle raw material solution, and in the dissolving step, the stirring energy is varied by changing at least one of the aforementioned conditions, and by changing the stirring energy, the degree of crystallization and the crystal form of the fine particles obtained in the precipitation step are controlled.

    METHOD FOR MANUFACTURING NICKEL MICROPARTICLES
    10.
    发明授权
    METHOD FOR MANUFACTURING NICKEL MICROPARTICLES 有权
    制造镍微粒的方法

    公开(公告)号:EP2896475B1

    公开(公告)日:2017-11-22

    申请号:EP12884396.8

    申请日:2012-10-02

    IPC分类号: B22F9/24 B22F1/00

    摘要: The present invention addresses the problem of providing a method for producing nickel microparticles in which the ratio of crystallite's diameter to the particle diameter of the nickel microparticles is controlled. At least two types of fluids to be processed are used, including a nickel compound fluid in which a nickel compound is dissolved in a solvent, and a reducing agent fluid in which a reducing agent is dissolved in a solvent. Sulfate ions are included in the nickel compound fluid, and polyol is included in the nickel compound fluid and/ or the reducing agent fluid. The fluid to be processed is mixed in a thin film fluid formed between at least two processing surfaces (1, 2), at least one of which rotates relative to the other, and which are disposed facing each other and capable of approaching and separating from each other, and nickel microparticles are precipitated. The present invention is characterized in that at this time, the ratio (d/ D) of crystallite's diameter (d) to the particle diameter (D) of the nickel microparticle is controlled by controlling the pH of the nickel compound fluid introduced between the processing surfaces (1, 2) and the molar ratio of sulfate ions with respect to nickel in the nickel compound fluid.