Patent ID: 8246848
Filing Date: 2012-08-21
Classification: C03C,C08K,C09D

Abstract:
1. A process for producing a heat-ray shielding film-formed base member comprising the steps of: (a) mixing a sol solution, formed by using a starting raw material of trialkoxysilane and tetraalkoxysilane, with a solution in which tin-doped indium oxide ultra-fine particles having an average particle diameter of 200 nm or less are dispersed, to make a treatment agent; and (b) applying the treatment agent on the base member to form a film on the base member, wherein the treatment agent comprises an organic solvent having a boiling point of 100-200° C. as a dispersion medium, wherein the applying is conducted by bringing a member retaining the treatment agent into contact with the base member or by spraying the treatment agent on the base member, wherein the formed film has a haze value of 0.5% or less, wherein amounts of silicon compound derived from the trialkoxysilane and tetraalkoxysilane are present in the treatment agent in a weight ratio of silicon compound to tin-doped indium oxide ultra-fine particles of from 2:8 to 7:3, and wherein the amount of the silicon compound derived from the tetraalkoxysilane is between 1 and 4 times by weight the amount of the silicon compound derived from the trialkoxysilane.