Super-heat resistant polyimide film produced from UBE’s exclusive “BPDA  (Biphenyl tetracarboxylic dianhydride)“ monomers.  

This formulation is unique to UBE and exhibits outstanding dimensional stability,  low water absorption and very high chemical resistance.

“UPILEX®-RN” has many excellent physical characteristics, including molding process-ability and environmental  resistance. Therefore “UPILEX®-RN” can be used in embossing, speaker diaphragms, aerospace applications, etc.. 

●“UPILEX®-RN” has excellent tolerance not only to acids and organic solvents, but also to alkalis. 

●“UPILEX®-RN” has excellent heat resistance ,electrical properties, and radiation resistance. 

●Since it has excellent elongation through heating and pressing, it is easy to make solid components using  drawing process. Molded articles have excellent strength characteristics. 

●“UPILEX®-RN” can form an excellent insulating layer by ribbon winding to a conductor such as a coil, due to it’s low modulus and high flflexibility compared to “UPILEX®-S”.