公开(公告)号：US20070275257A1

公开(公告)日：2007-11-29

申请号：US11632900

申请日：2005-07-19

申请人： Ryou Muraguchi ,  Mitsuaki Kumazawa ,  Toshiharu Hirai

发明人： Ryou Muraguchi ,  Mitsuaki Kumazawa ,  Toshiharu Hirai

IPC分类号： B32B27/30 ,  C01B33/18 ,  C01B33/143

CPC分类号： C01B33/193 ,  C01B33/18 ,  C08K3/36 ,  C08K7/26 ,  C09C1/30 ,  C09D7/61 ,  C09D7/67 ,  C09D7/68 ,  Y10T428/2995 ,  Y10T428/31935

摘要： To provide silica-based particles with a low refractive index, the hollow and spherical silica-based particles include porous materials or cavities inside an outer shell thereof by growing porous composite oxide particles (primary particles) adjusting a ratio of a quantity of added silica sources versus a quantity of added sources for an inorganic oxide other than silica and then removing the inorganic oxide other than silica. The dispersion liquid of silica-based particles is aged at a range from the room temperature to 300° C., cleaning is performed according to the necessity, and hydrothermal processing is performed at a temperature in the range from 50 to 300° C.

摘要翻译： 为了提供具有低折射率的二氧化硅基颗粒，中空和球形二氧化硅基颗粒通过生长多孔复合氧化物颗粒（初级颗粒）来调节添加的二氧化硅源的比例，包括其外壳内的多孔材料或空腔 相对于二氧化硅以外的无机氧化物的添加量，然后除去二氧化硅以外的无机氧化物。 二氧化硅系粒子的分散液在室温至300℃的范围内老化，根据需要进行清洗，在50〜300℃的温度下进行水热处理。