Polyurethane-85 is a urethane polymer formed by reacting poly(1,4-butanediol)-28, poly(1,4-butanediol)-41 and isopropylidendicyclohexanol with Isophorone Diisocyanate. The polymer is capped with 2-Hydroxyethyl Acrylate.
Polyurethane-86 is a urethane polymer formed by a multi-step process. First, a polyester is made by condensing Ethylene Carbonate and Hexanediol. This polyester and 1,5-Pentanediol are reacted with Isophorone Diisocyanate. The polymer is capped with HEMA.