Patent ID: 8299169
Filing Date: 2012-10-30
Classification: C03C,C09D

Abstract:
1. A coating solution for obtaining sol-gel films, said coating solution being that the coating solution has a solid matter and a solvent, wherein: the solid matter has a silicon oxide oligomer obtained by subjecting an alkoxysilane to hydrolysis and polycondensation in an acid aqueous solution, the solvent has an organic solvent having a boiling point of 100° C. or higher and a viscosity of 3.5 mPa·s or lower and the acid aqueous solution, the number average molecular weight of the silicon oxide oligomer in terms of polystyrene is 500-4000, the content of the solid matter in the coating solution is 8-30 weight %, the content of the silicon oxide oligomer in the solid matter is 10 weight % or greater, the alkoxysilane comprises trialkoxysilane and tetraalkoxysilane, and the weight ratio of a silicon oxide oligomer derived from the trialkoxysilane to a silicon oxide oligomer derived from the tetraalkoxysilane is 20:80 to 50:50.