ULTRAVIOLET-REFLECTING MATERIAL

摘要

PURPOSE:To obtain a material which is white and has high ultraviolet reflectivity, by incorporating a low-molecular condensible triazine compound in a base material. CONSTITUTION:An ultraviolet-reflecting material containing a low-molecular condensible triazine compound and/or fine resin particles of a particle diameter of 0.005-100mu, obtained by curing a precondensate or polymer thereof. A desirable triazine compound is a 1,3,5-triazine compound. Melamine and benzoguanamine are the most desirable triazine compounds. To obtain the low-molecular condensible triazine compound or a precondensate or polymer thereof, these are first formed in an aqueous medium to obtain aqueous solutions of a concentration of about 5-40wt%. These aqueous solutions are then added dropwise to an acidic aqueous solution and the resulting mixtures are vigorously agitated to form fine resin particles of a particle diameter of 0.005-100mu.