The present invention relates to a method for producing mesoporous silica particles including a silica-containing outer shell portion with a mesoporous structure. The method includes the steps of: (I) pressurizing a mixed solution containing a hydrophobic organic compound, a surfactant, and an aqueous solvent by a high-pressure emulsification method so as to form an emulsion that includes emulsion droplets containing the hydrophobic organic compound; (II) adding a silica source to the emulsion so as to form a silica-containing outer shell portion with a mesoporous structure on a surface of the emulsion droplets, and precipitating composite silica particles including the outer shell portion and the emulsion droplets on an inner side relative to the outer shell portion; and (III) removing the emulsion droplets from the composite silica particles.
According to the production method of the present invention, it is possible to produce easily mesoporous silica particles that have a small average particle size and include fewer coarse particles. Thus, the mesoporous silica particles produced by this method are useful in fields that handle a paint composition for an antireflection film and a coating film.
本发明涉及一种生产介孔
二氧化硅颗粒的方法,该颗粒包括具有介孔结构的含
二氧化硅外壳部分。该方法包括以下步骤(I) 通过高压乳化法对含有疏
水性有机化合物、表面活性剂和
水性溶剂的混合溶液加压,以形成包括含有疏
水性有机化合物的乳液液滴的乳液;(II) 向乳液中添加
二氧化硅源,以便在乳液液滴表面形成具有介孔结构的含
二氧化硅的外壳部分,并在相对于外壳部分的内侧析出包括外壳部分和乳液液滴的复合
二氧化硅颗粒;以及 (III) 从复合
二氧化硅颗粒中去除乳液液滴。
根据本发明的生产方法,可以轻松生产出平均粒径较小、包含较少粗颗粒的介孔
二氧化硅颗粒。因此,用这种方法生产的介孔
二氧化硅颗粒可用于处理抗反射膜和涂膜的涂料成分。