| abstract |
The infrared reflecting material of the present invention comprises at least an alkaline earth metal element and at least one element selected from titanium, zirconium and niobium, and additionally elements of group IIIa of the periodic table such as manganese and / or iron, aluminum and gallium, if necessary, or It is a perovskite-type composite oxide containing zinc and the like, has sufficient infrared reflecting ability, and is excellent in thermal stability and heat resistance, so that there is no concern about stability and environmental problems. The infrared reflecting material can be prepared, for example, by mixing alkaline earth metal compounds and titanium compounds, and optionally manganese compounds and / or iron compounds, elements of the group IIIa of the periodic table, or zinc compounds in a predetermined amount and firing the mixture. have. The prepared composite oxide may be used in various applications such as coating on a roof or an exterior wall of a building, a road or a sidewalk in order to reduce a heat island phenomenon by mixing with a paint or a resin composition as a powder. |