UPIA® is a polyimide precursor formed from UBE's proprietary BPDA(Biphenyl tetracarboxylic dianhydride) monomers. This is the original UBE varnish. UBE polyimide film "UPILEX®" is produced using this unique UBE polyimide precursor giving it various and unique advantages. Polyimide coated film derived from the varnish of the same grade has the same properties.Information provided by UBE Industries, LTD |