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    • 8. 发明专利
    • Method for producing polyorganosiloxane particle
    • 生产聚硅氧烷类颗粒的方法
    • JP2004277476A
    • 2004-10-07
    • JP2003067777
    • 2003-03-13
    • Ube Nitto Kasei Co Ltd宇部日東化成株式会社
    • SUZUKI TARO
    • C01B33/12C08G77/06
    • PROBLEM TO BE SOLVED: To provide a method for producing polyorganosiloxane particles, by which the polyorganosiloxane particles having an average particle diameter of, for example, >10μm and having a single dispersed particle diameter distribution can efficiently be produced, while effectively controlling the particle diameter.
      SOLUTION: This method for producing the polyorganosiloxane particles is characterized by comprising a process for hydrolyzing and condensing an aqueous solution containing a silicon compound (an alkoxysilane having non-hydrolyzable groups) in the presence of a basic catalyst to form the seed particles comprising the polyorganosiloxane particles and a process for growing the seed particles, wherein a particle diameter-growing liquid containing an anionic surfactant in a concentration satisfying the following relational expression (II): Y=α×(a×X)/(A×R) (II) [(a) is a theoretical value obtained by dividing the mol. wt. of the product produced by hydrolyzing and condensing the silicon compound by the mol. wt. of the silicon compound; Y is the concentration (mass %) of the anionic surfactant in the particle diameter-growing liquid; X is the mass (g) of the raw material used for the synthesis of the seed particles; A is the total mass of the solution used in the particle-growing process; R is the average particle diameter (μm) of the seed particles; α is a coefficient of 4.0 to 75] is added to the seed particle-forming liquid to grow the seed particles, in the process for growing the seed particles.
      COPYRIGHT: (C)2005,JPO&NCIPI
    • 解决问题:为了提供聚有机硅氧烷颗粒的制造方法,通过该方法可有效地制造平均粒径为例如>10μm并具有单一分散粒径分布的聚有机硅氧烷颗粒,同时有效地控制 粒径。 解决方案:该聚有机硅氧烷颗粒的制造方法的特征在于,在碱性催化剂的存在下,含有含有硅化合物(具有不可水解基团的烷氧基硅烷)的水溶液水解和缩合的方法,形成种子粒子 包含聚有机硅氧烷颗粒和生长种子颗粒的方法,其中含有浓度满足以下关系式(II)的阴离子表面活性剂的粒径生长液:Y =α×(a×X)/(A×R )(II)[(a))是通过除去摩尔得到的理论值。 重量。 通过将硅化合物水解和缩合而得到的产物。 重量。 的硅化合物; Y是粒径生长液中阴离子表面活性剂的浓度(质量%); X是用于合成种子颗粒的原料的质量(g); A是在颗粒生长过程中使用的溶液的总质量; R是种子颗粒的平均粒径(μm); 在种子颗粒的生长过程中,将α为4.0〜75的系数加入到形成种子颗粒的液体中以生长种子颗粒。 版权所有(C)2005,JPO&NCIPI
    • 10. 发明专利
    • Manufacturing method for polymer particle and apparatus used for the same
    • 用于聚合物颗粒的制造方法和用于其的装置
    • JP2004339296A
    • 2004-12-02
    • JP2003135238
    • 2003-05-14
    • Ube Nitto Kasei Co Ltd宇部日東化成株式会社
    • SUZUKI TARO
    • C01B33/12C08G77/06C08G77/18
    • PROBLEM TO BE SOLVED: To provide a manufacturing method for a polymer particle wherein the manufacturing yield and CV value (standard deviation (μm) of microparticle) of the particle size are improved through inhibition of coalescence or aggregation of a seed particle at manufacturing of a polymer such as a polyorganosiloxane particle used as a spacer for a liquid crystal display device or as a standard particle. SOLUTION: In the manufacturing method for the polymer particle, a monomer having an alkoxyl group and/or a hydroxyl group is reacted in the presence of a catalyst to form the seed particle. Then, an aqueous solution containing the monomer or its hydrolysate is added to the seed particle to grow the seed particle. Here, the formation and the growth of the seed particle are performed in a reaction vessel of an inverted-cone shape. COPYRIGHT: (C)2005,JPO&NCIPI
    • 要解决的问题:提供一种聚合物颗粒的制造方法,其中通过抑制种子颗粒的聚结或聚集来改善粒径的制造产率和CV值(微粒的标准偏差(μm)) 制造聚合物,例如用作液晶显示装置的间隔物的聚有机硅氧烷颗粒或标准颗粒。 解决方案:在聚合物颗粒的制造方法中,具有烷氧基和/或羟基的单体在催化剂的存在下反应以形成种子颗粒。 然后,将含有单体或其水解产物的水溶液加入到种子颗粒中以生长种子颗粒。 这里,种子粒子的形成和生长在倒圆锥形状的反应容器中进行。 版权所有(C)2005,JPO&NCIPI