Patent ID: 8247026
Filing Date: 2012-08-21
Classification: C03C,G02B,Y10T

Abstract:
1. A method for producing an optical film having a total light transmittance of 70% or more and a haze value of 20% or more and having one surface or both surfaces of the film with a mean roughness of a surface (Ra) of 100 nm or less, the method comprising the steps of: (A) subjecting a metallic compound to form a metallic oxide through a sol-gel reaction in a solvent, (B) providing a solution containing a transparent resin as a solute, (C) mixing the mixture obtained in Step (A) and the solution obtained in Step (B), and (D) applying or spreading the mixture obtained in Step (C) to a substrate or container, followed by heating to evaporate the solvent to form a film outer-surface of which has a mean roughness of a surface (Ra) of 100 nm or less.