公开(公告)号：US06417264B1

公开(公告)日：2002-07-09

申请号：US09468834

申请日：1999-12-22

申请人： Hiroyuki Kono ,  Kenji Fukunaga ,  Kenichi Ishizu ,  Yoshinori Tagashira

发明人： Hiroyuki Kono ,  Kenji Fukunaga ,  Kenichi Ishizu ,  Yoshinori Tagashira

IPC分类号： C08L334

CPC分类号： C01B33/149 ,  B41M5/5218 ,  C01B33/14

摘要： Provided is a cationic polymer-modified silica dispersion which comprises silica fine particles having an average particle diameter of less than 200 nm and a cationic polymer and which does not bring about coagulation of the silica particles. The above dispersion which is diluted to a solid concentration of 1.5% by weight is characterized by having a light scattering index (n value) of 2.0 or more. The above dispersion can be produced by oppositely-colliding a mixed solution obtained by mixing silica with a cationic polymer in a polar solvent at a treating pressure of 300 kgf/cm2 or more or passing it through an orifice under a condition that a pressure difference between the inlet side and the outlet side of the orifice is 300 kgf cm2 or more.

摘要翻译： 本发明提供一种阳离子聚合物改性二氧化硅分散体，其包含平均粒径小于200nm的二氧化硅细颗粒和阳离子聚合物，并且不会引起二氧化硅颗粒的凝结。 稀释至固体浓度为1.5重量％的上述分散体的特征在于具有2.0以上的光散射指数（n值）。 上述分散体可以通过将处理压力为300kgf / cm 2以上的极性溶剂中的二氧化硅与阳离子性聚合物混合而成的混合溶液相互碰撞来制造，或者使其通过孔口， 孔口的入口侧和出口侧为300kgfcm 2以上。