BINDER FOR PHOTOCATALYST COATING AGENT AND ITS MANUFACTURING METHOD, PHOTOCATALYST COATING AGENT AND ITS MANUFACTURING METHOD

• Main Author: TSUCHIDA TOSHIHIRO
• Format: Patent
• Language: English
• Published: 28.05.2009
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F; INORGANIC CHEMISTRY; METALLURGY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR RELEVANT APPARATUS; TRANSPORTING

PROBLEM TO BE SOLVED: To provide a binder containing peroxotitanic acid capable of improving the coatability of a titanium oxide-based photocatalyst coating agent without lowering its photocatalytic activity and its manufacturing method. SOLUTION: The binder containing peroxotitanic acid used for a titanium oxide-based photocatalyst coating binder is manufactured by obtaining a slurry of titanium hydroxide microparticles which is prepared by adding a basic substance (ammonia water or the like) to an aqueous solution of a soluble titanium compound (titanium tetrachloride or the like), neutralizing and hydrolyzing, adding hydrogen peroxide into the slurry of titanium hydroxide to obtain a peroxotitanic acid dispersion liquid, and then treating for deionization to reduce the concentration of ammonium ion in the liquid treated for deionization down to 200 ppm or below after the process for preparing the titanium hydroxide slurry and/or the process for preparing the peroxotitanic acid dispersion liquid. COPYRIGHT: (C)2009,JPO&INPIT