To provide a coating liquid for forming a silica-based coating film good in both preserving stability and applicability, capable of coping with various coating processes developed currently.
This coating liquid for forming the silica-based coating film is produced through steps including a step of proceeding a hydrolysis reaction of a trialkoxysilane in a reaction solvent mainly comprising an alkylene glycol dialkyl ether to obtain a homogeneous dispersion of the reaction product in the reaction solvent as a dispersant; a step of further adding another organic solvent having a boiling point higher than that of the alkylene glycol dialkyl ether to the dispersion; and a step of removing the alkylene glycol dialkyl ether from the dispersion obtained by adding the other organic solvent through fractional distillation to obtain a homogeneous dispersion of the reaction product in the other organic solvent as a dispersant instead of the alkylene glycol dialkyl ether.
Iwa Saki Kokuni
Akira Kurihara
Kawamata Sumio
Masakazu Ito
Shunichi Takahashi
Toshio Takamatsu