POWDER FOR PROTECTING INFRARED(IR) RAYS, AND IR PROTECTING SOLUTION AND IR PROTECTING AGENT USING THE SAME

摘要

PURPOSE: Provided is powder having high transmission in the visible light range, protects infrared rays efficiently, shows excellent color tones and has a stable IR protection effect. CONSTITUTION: The powder for protecting infrared rays is prepared by the method comprising the steps of: mixing an indium salt, an antimony salt and a tin salt in a weight ratio of 15-90% : 1-20% : 5-80%; dissolving the mixture in water; adding a growth inhibitor and a basic solution to form precipitates in a powder state; and washing, drying and firing the precipitated powder. Particularly, the indium salt, antimony salt and tin salt are In(NO3)3, SbCl3 and SnCl2, respectively.