首页> 外国专利> The high hydrophobic spherical sol gel silica particulate, the production manner, consist of the said particulate use the toner externally adding medicine and the said toner externally adding medicine which for electrostatic charge image development

The high hydrophobic spherical sol gel silica particulate, the production manner, consist of the said particulate use the toner externally adding medicine and the said toner externally adding medicine which for electrostatic charge image development

机译：高疏水性球形溶胶凝胶二氧化硅颗粒，其生产方式，由所述颗粒用外加调色剂的墨粉和所述外用静电显影剂的墨粉组成。

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摘要

PPROBLEM TO BE SOLVED: To provide highly hydrophobic spherical sol-gel silica fine particles; a method for producing the same; a toner external additive for electrostatic charge image development, which is excellent in flowability of a toner, caking resistance, fixability, cleaning property, environmental stability of the electrified charge amount, or the like and useful for an electrophotographic method, and to provide a developer containing the toner additive. PSOLUTION: The method for producing the highly hydrophobic spherical sol-gel silica fine particles having a hydrophobicity of ≥50 and comprising primary particles having an average particle diameter of 0.01-5 μm includes: a process for obtaining heat treated spherical sol-gel silica fine particles having a hydrophobicity of 50 by heat treating hydrophobic spherical sol-gel silica fine particles having a hydrophobicity of ≥50 and comprising primary particles having an average particle diameter of 0.01-5 μm, which are obtained by making hydrophilic spherical sol-gel silica fine particles, obtained by the hydrolysis condensation of hydrocarbyloxysilane, hydrophobic; and a process for making the heat treated spherical sol-gel silica fine particles hydrophobic. The silica fine particles obtained by the method is also provided. The toner external additive comprises the silica fine particles, and the developer contains the toner external additive. PCOPYRIGHT: (C)2007,JPO&INPIT

机译：

要解决的问题：提供高度疏水的球形溶胶-凝胶二氧化硅细颗粒;一种生产方法;用于静电图像显影的调色剂外部添加剂，其在调色剂的流动性，抗结块性，定影性，清洁性，带电电荷量的环境稳定性等方面极好，并且可用于电子照相方法，并提供显影剂包含碳粉添加剂。

解决方案：制备疏水性为≥50并且包含平均粒径为0.01-5μm的初级颗粒的高疏水性球形溶胶-凝胶二氧化硅细颗粒的方法包括：获得热处理的方法。通过热处理疏水性为≥50且包含平均粒径为0.01-5μm的一次颗粒的疏水球形溶胶-凝胶二氧化硅细颗粒，其疏水性＜50。通过使亲水性球形溶胶-凝胶二氧化硅细颗粒获得，通过使烃氧基硅烷水解缩合而获得疏水性;以及使热处理过的球形溶胶-凝胶二氧化硅细颗粒疏水的方法。还提供了通过该方法获得的二氧化硅细颗粒。调色剂外部添加剂包含二氧化硅细颗粒，而显影剂包含调色剂外部添加剂。

版权：（C）2007，日本特许厅＆INPIT 展开▼

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公开/公告号JP4781769B2

专利类型
公开/公告日2011-09-28

原文格式PDF
申请/专利权人信越化学工業株式会社;
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申请/专利号JP20050294280
发明设计人工藤宗夫;
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申请日2005-10-07
分类号C01B33/159;C01B33/18;G03G9/08;
国家 JP
入库时间 2022-08-21 18:19:23

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