Polyimide film

Polyimide films include two types of homogeneous polyimide film and biphenyl type polyimide film, which are composed of polyimide films. The former is the United States DuPont Company products, commodity name Kapton, by the benzene anhydride and two amino diphenyl ether made. The latter is produced by Japan Woo Hing production company, commodity name Upilex, by Phthalic anhydride and two phenyl ether Diamine (r-type) or Resorcinol (S-type) are made.