Patent ID: 8158039
Filing Date: 2012-04-17
Classification: C08J

Abstract:
1. A method of preparing an optical film comprising steps of preparing a mixture of components, preparing a film by melt-cast method, and drying the film, wherein the component comprises; a cellulose ester, a sugar ester compound formed by esterification of a sugar compound composed of 1 to 12 structures selected from a furanose structure and a pyranose structure, an acryl resin, and an anti-oxidant, wherein an amount of the sugar ester compound is 0.5 to 35% by weight of the cellulose ester, and the anti-oxidant is a compound having partial structure represented by one of Formulas C-1, C-2, C-3, C-4 and C-5 in a molecule, wherein, Ph wherein, Ph wherein Ph wherein Ph wherein Ph