The porous silica film null which is superior in the coating liquid, and the water repellency Characteristic which are obtained by the production manner and the said manner of the coating liquid for porous silica film formation

摘要

PROBLEM TO BE SOLVED: To provide a method for producing a coating liquid for forming a porous silica film capable of being used as an optically functional material and electronically functional material, the coating liquid obtained by the method and the porous silica film excellent in water repellency.;SOLUTION: This method for producing the coating liquid for forming the porous silica film by mixing (A) a hydrolytic condensate of an alkoxysilane, (B) a hydrolytic co-condensate of (B-1) an alkoxysilane containing a polyalkyleneoxide group and (B-2) a hydrolyzable organic silicon compound not containing the polyalkylene oxide group, and (C) a surfactant is provided by mixing (A) the hydrolytic condensate with (C) the surfactant and adding the mixture into (B) the hydrolytic co-condensate, or mixing (B) the hydrolytic co-condensate with (C) the surfactant and then adding the mixture into (A) the hydrolytic condensate and further agitating. The porous silica film having uniform pores capable of being used for the optically functional materials, electronically functional materials, etc., and excellent in water repellency is obtained by the method for producing the coating liquid for forming the porous silica film and the coating liquid obtained by the method.;COPYRIGHT: (C)2004,JPO