Patent ID: 8309632
Filing Date: 2012-11-13
Classification: C08L

Abstract:
1. A method for manufacturing a liquid crystalline epoxy nanocomposite material for dental therapy, comprising: providing an inorganic oxide nanoparticle filler component, wherein the inorganic oxide nanoparticles are surface modified by a silane coupling agent or a dispersant, and wherein the inorganic oxide nanoparticle filler component comprises one or more oxides of silicon, aluminum, titanium, gold, zinc and zirconium; mixing a liquid crystalline epoxy resin and a liquefied epoxy resin, wherein the liquid crystalline epoxy resin has a biphenyl group containing structure or an azomethine group containing structure, and wherein the liquefied epoxy resin is selected from the group consisting of 3,4-epoxycyclohexane methyl-3,4-epoxycyclohexane carboxylate and 4-vinyl cyclohexane dioxide; heating the resulting mixture to dissolve the liquid crystalline epoxy resin in the liquefied epoxy resin, forming an epoxy solution; mixing the epoxy solution, the inorganic oxide nanoparticle filler component and a curing agent, wherein the curing agent comprises an ionic photo initiator selected from the group consisting of diaryliodonium salts, triaryliodonium salts and ferrocenium salts; and photo curing the resulting mixture to form the liquid crystalline epoxy nanocomposite material.