Patent ID: 8026338
Filing Date: 2011-09-27
Classification: B29C,B29D,B29K,C08G

Abstract:
1. A method for producing a polyimide film, comprising the steps of: preparing a polar organic solvent solution of a polyimide precursor obtained by mixing a tetracarboxylic acid dianhydride compound and a diamine compound; adding a dehydrating agent and an imidization catalyst comprising 3,5-diethyl pyridine to the polar organic solvent solution so as to prepare a resin solution composition; and drying the resin solution composition by heating so as to imidize the resin solution composition after flowing the resin solution composition onto a support in a casting manner, wherein the polyimide precursor includes pyromellitic acid dianhydride and 4,4′-diaminodiphenyl ether.