Bis-HEMA Poly(Dimethylcyclohexane/Hexane Carbonate)/IPDI Copolymer is a urethane polymer formed by a multi-step process. First, a polyester is made by condensing Dimethylolcyclohexane, Hexanediol and Dimethyl Carbonate, which is subsequently reacted with Isophorone Diisocyanate. The resulting polymer is end-capped with HEMA.