C - Chemistry – Metallurgy – 01 – B
Patent
C - Chemistry, Metallurgy
01
B
C01B 33/14 (2006.01) B01F 17/00 (2006.01) B41M 5/00 (2006.01) D21H 19/00 (2006.01) D21H 21/14 (2006.01)
Patent
CA 2293087
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.
Fukunaga Kenji
Ishizu Kenichi
Kono Hiroyuki
Tagashira Yoshinori
Smart & Biggar
Tokuyama Corporation
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