PROBLEM TO BE SOLVED: To provide a method for producing a clay mineral dispersion liquid that hardly undergoes a viscosity reduction in the production process.SOLUTION: The method for producing the clay mineral dispersion liquid comprising a water-swellable clay mineral, component (A), water, component (B), a water-soluble polymer compound, component (C), and a polyglycerol ester, component (D) comprises: a clay dispersion step of mixing the components (A), (B) and (C) to thereby obtain a clay dispersion liquid a cooling/mixing step of cooling the clay dispersion liquid at an average cooling rate of 0.01-5°C/min while stirring at a blade tip speed of 5-25 m/s to thereby obtain a mixed liquid and a dispersion liquid preparation step of mixing the mixed liquid with the component (D).COPYRIGHT: (C)2012,JPO&INPIT【課題】製造工程中で減粘しにくい粘土鉱物分散液の製造方法を提供する。【解決手段】(A)成分:水膨潤性粘土鉱物と、(B)成分:水と、(C)成分:水溶性高分子化合物と、(D)成分:(ポリ)グリセリンエステルとを含有する粘土鉱物分散液の製造方法であって、前記(A)成分と、前記(B)成分と、前記(C)成分とを混合して粘土分散液を得る粘土分散工程と、前記粘土分散液を翼先端速度5~25m/sで攪拌しながら、かつ平均0.01~5℃/minの冷却速度で冷却して混合液を得る冷却混合工程と、前記混合液と、(D)成分とを混合する分散液調製工程とを有することよりなる。【選択図】なし
