POLYURETHANE COMPOUND, ULTRAVIOLET CURABLE RESIN COMPOSITION AND RAY CONTROLLABLE STRUCTURES PREPARED BY THE SAME

摘要

PURPOSE: A polyurethane compound is provided to increase refractivity of a UV curable resin through application of a polyurethane prepolymer of high refractivity. CONSTITUTION: A polyurethane compound comprises polyisocyanate, polyol, a cross-linking agent, and additives. At least one or more of the polyisocyanate and polyol comprise conjugated structure. The polyisocyanate is one or more selected from 4,4'-diphenylmethane diisocyanate, 2,6-toluene diisocyanate, tetramethyl-1,3-xylene diisocyanate. The refractivity of the polyurethane compound is 1.58 or more. The UV curable resin composition comprises 5-95 weight% of the polyurethane compound based on the total composition.