Method for producing ceramic fine particles and apparatus used therefor
    1.
    发明授权
    Method for producing ceramic fine particles and apparatus used therefor 失效
    陶瓷微粒的制造方法及其制造方法

    公开(公告)号:US5618580A

    公开(公告)日:1997-04-08

    申请号:US454292

    申请日:1995-06-15

    摘要: The present invention provides a method for producing ceramic fine particles comprising the steps of supplying gaseous starting materials or starting material droplets to a reaction space arranged in an annular portion between inner and outer cylinders of a coaxial, double-cylinder reaction apparatus, the reaction apparatus having a stationary outer cylinder and a rotatable inner cylinder; and subjecting the gaseous starting materials or the starting material droplets to reaction in the reaction space while rotating the inner cylinder. Also, the present invention provides a production apparatus used therefor. In the present invention, by utilizing the Taylor vortex flow as the flow for a CVD reaction field or a pyrolytic reaction field, uniform ceramic fine particles can be produced at a high yield because of an even temperature distribution, and an even concentration distribution of the reaction gases or an even concentration distribution of the droplet number in the vortex flow, and residence time of the resulting fine particles locked in the vortex flow.

    摘要翻译: PCT No.PCT / JP93 / 01889 Sec。 371日期:1995年6月15日 102(e)日期1995年6月15日PCT 1993年12月24日PCT公布。 公开号WO94 / 14530 日期:1994年7月7日本发明提供一种陶瓷微粒的制造方法,其特征在于,包括以下步骤:将气态原料或原料液滴供给布置在同轴双筒反应的内外筒之间的环状部分的反应空间 装置,反应装置具有固定的外筒和可旋转的内筒; 并且在使内筒旋转的同时使气态原料或原料液滴在反应空间中反应。 另外,本发明提供一种用于其的制造装置。 在本发明中,通过利用泰勒涡流作为CVD反应场或热解反应场的流动,由于均匀的温度分布,可以高产率地制备均匀的陶瓷细颗粒,并且均匀的浓度分布 反应气体或液滴数量在涡流中的均匀浓度分布,以及所得细颗粒停留在涡流中的停留时间。

    Fine ultraviolet screening particles, process for preparing the same, and cosmetic preparation
    4.
    发明授权
    Fine ultraviolet screening particles, process for preparing the same, and cosmetic preparation 有权
    精细的紫外线筛选颗粒,其制备方法和化妆品制备

    公开(公告)号:US06197282B1

    公开(公告)日:2001-03-06

    申请号:US09194199

    申请日:1998-11-20

    IPC分类号: A61K742

    摘要: The present invention provides a method for producing a material dispersed with ultraviolet shielding fine particles, characterized by subjecting a starting material liquid mixture comprising particles comprising one or more inorganic substances having shielding abilities against ultraviolet light, one or more silicone dispersants selected from modified silicones and reactive silicones, and a silicone oil to a mill treatment and/or a high-pressure dispersion treatment; and ultraviolet shielding fine particles or a material dispersed therewith, characterized by being produced by the above method. Also, the present invention provides a method of producing a powdery product of ultraviolet shielding fine particles, characterized by drying the material dispersed with ultraviolet shielding fine particles obtainable by the above method. Further, the present invention provides cosmetics comprising a material dispersed with ultraviolet shielding fine particles or a powdery product of the ultraviolet shielding fine particles. The material dispersed with ultraviolet shielding fine particles of the present invention is characterized in that the ultraviolet shielding fine particles comprise particles comprising one or more inorganic substances having shielding abilities against ultraviolet light, surfaces thereof being coated with one or more silicone dispersants selected from modified silicones and reactive silicones, and that at least a part of the ultraviolet shielding fine particles is dispersed in a silicone oil as aggregated particles of the particles comprising inorganic substances.

    摘要翻译: 本发明提供一种分散有紫外线屏蔽微粒的材料的制造方法,其特征在于,将包含一种或多种具有屏蔽能力的无机物质的紫外线的原料液体混合物,一种或多种选自改性硅酮的有机硅分散剂和 反应性硅氧烷和硅油进行研磨处理和/或高压分散处理; 和紫外线屏蔽微粒或其分散的材料,其特征在于通过上述方法制备。 另外,本发明提供一种紫外线屏蔽微粒的粉末状制品的制造方法,其特征在于,使用通过上述方法得到的紫外线屏蔽微粒分散的材料进行干燥。 此外,本发明提供了包含分散有紫外线屏蔽微粒的材料或紫外线屏蔽微粒的粉末状产品的化妆品。 用本发明的紫外线屏蔽微粒分散的材料的特征在于,紫外线屏蔽微粒包括包含一种或多种具有对紫外线的屏蔽能力的无机物质的颗粒,其表面涂覆有一种或多种选自改性有机硅的硅氧烷分散剂 和反应性硅氧烷,并且至少一部分紫外线屏蔽细颗粒作为包含无机物质的颗粒的凝集颗粒分散在硅油中。

    Ultraviolet-screening composite particulate and process for the
production thereof
    5.
    发明授权
    Ultraviolet-screening composite particulate and process for the production thereof 失效
    紫外线筛选复合颗粒及其制备方法

    公开(公告)号:US6090373A

    公开(公告)日:2000-07-18

    申请号:US125463

    申请日:1998-08-19

    摘要: Ultraviolet shielding composite fine particles having transparency in a visible light region, comprising matrix particles comprising an aggregate of primary particles having an average particle size of from 0.001 to 0.3 .mu.m, the aggregate being formed while the primary particles retain their shapes; and daughter particles having an average particle size of from 0.001 to 0.1 .mu.m, the daughter particles being dispersed in and supported by the matrix particles, wherein the daughter particles have a smaller band gap energy than the particles constituting the matrix particles and are capable of absorbing ultraviolet light, and wherein the surfaces of the composite fine particles are coated with one or more silicones selected from the group consisting of modified silicones, reactive silicones, and silicone-modified copolymers, and wherein the ultraviolet shielding composite fine particles have substantially no catalytic activities. By forming composite fine particles comprising the ultrafine particles having the ultraviolet shielding ability, the composite fine particles of the present invention have substantially no catalytic activities, high transparency in the visible light region, and high shielding ability in the ultraviolet light region.

    摘要翻译: PCT No.PCT / JP97 / 00420 Sec。 371日期1998年8月19日 102(e)1998年8月19日PCT PCT 1997年2月17日PCT公布。 出版物WO97 / 3093400 日期:1997年8月28日在可见光区域具有透明度的紫外线屏蔽复合微粒,其包含基质颗粒,其包含平均粒径为0.001〜0.3μm的一次粒子的聚集体, 形状; 平均粒径为0.001〜0.1μm的子粒子,分散在母体粒子中并由基体粒子支撑的子粒子,其中,子粒子具有比构成基体粒子的粒子更小的带隙能量,能够 吸收紫外光,其中复合微粒的表面涂覆有一种或多种选自改性硅氧烷,反应性硅氧烷和硅氧烷改性共聚物的硅氧烷,并且其中紫外线屏蔽复合微粒基本上不催化 活动 通过形成包含具有紫外线屏蔽能力的超微粒子的复合微粒,本发明的复合微粒基本上不具有催化活性,可见光区域的透明度高,紫外线区域的屏蔽能力高。