Patent ID: 8735464
Filing Date: 2014-05-27
Classification: A61K,C08F,C08G

Abstract:
1. A method of making a radically curable polyurethane dimethacrylate prepolymer comprising: reacting at least one diisocyanate monomer with a reactive diol in the presence of a catalyst to form a diisocyanate-diol prepolymer; blending the diisocyanate prepolymer in at least one aprotic methacrylate monomer, and adding 2-hydroxyethyl methacrylate in the presence of a phenolic inhibitor, wherein the reacting includes reacting isophorone diisocyanate and saturated hydroxyl-terminated polybutadiene in the presence of hexamethylene dimethacrylate and dibutyltin dilaurate to form a polyisocyanate prepolymer in 20% hexamethylene dimethacrylate.