Surface treatment of polyimide film and polyimide film having a thin metal layer
申请人:UBE INDUSTRIES, LTD.
公开号:US20020177000A1
公开(公告)日:2002-11-28
A method of surface treating a polyimide film to impart improved adhesion to metal which comprises treating the surface of a polyimide film having a biphenyltetracarboxylic acid component by contact to a solution containing potassium permanganate and/or sodium permanganate and potassium hydroxide and/or sodium hydroxide and treating said surface with an acid.