PROBLEM TO BE SOLVED: To provide a method for producing zinc oxide that has a uniform shape and size, has a good crystallinity and dispersibility, has a low bulk density and good filling property.SOLUTION: The method includes heating a suspension of zinc oxide to 40°C or more, adding an alkali compound such as ammonium compound, and maintaining the pH at that temperature at 7 or more and aging the same or, the method includes heating a suspension obtained by mixing zinc oxide, zinc compound, and carboxylic acid and/or salt thereof, to 40°C or more, and maintaining the pH at that temperature at 7 or more and aging the same the obtained zinc oxide can be used for thermally conductive filler, packing material, white pigment, ceramic raw material, etc., and can be incorporated into cosmetics, external preparations, paint, resin composition, heat dissipation composition etc.COPYRIGHT: (C)2016,JPO&INPIT【課題】形状や大きさが整い、結晶性や分散性が良く、嵩密度が低く充填性が良い酸化亜鉛を製造する方法を提供する。【解決手段】亜鉛酸化物の懸濁液を40℃以上に加熱し、アンモニウム化合物等のアルカリ化合物を添加しその温度でのpHを7以上に維持して熟成する。また、亜鉛酸化物と、亜鉛化合物とカルボン酸及び/又はその塩とを混合した懸濁液を40℃以上に加熱し、その温度でのpHを7以上に維持して熟成する。得られた酸化亜鉛は、熱伝導性フィラー、充填剤、白色顔料、セラミックス原料等に用いることができ、化粧料、外用剤、塗料、樹脂組成物、放熱性組成物等に配合することができる。【選択図】図1
