A powder composed of multi-component oxide (MCO) and a method for manufacturing the same, as well as a resin composition filled with the powder.

Abstract

This invention relates to a calcium-titanium composite oxide powder that, when added to a resin composition, does not easily impair the resin's flowability or increase its brightness, making it suitable as a filler for resin compositions. The invention also includes a method for manufacturing the powder and a resin composition filled with the powder. The solution is a powder composed of a calcium-titanium composite oxide, in which, under X-ray diffraction, the crystallite diameter of the CaTiO3 crystallization peak is 60.0 nm to 98.0 nm within a diffraction angle 2θ of 22.00° to 24.00°, the roundness obtained from scanning electron microscopy of the particles in the powder is 0.88 or higher, the D50 diameter is 2.0 μm to 15.0 μm, and the L* value is 88.0 or lower. This powder can be manufactured by a method comprising the following steps: supplying a titanium source to a spray dryer, mixing the spray-dried titanium source with a calcium source, and sintering the mixture at 1000°C to 1800°C.

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