PROBLEM TO BE SOLVED: To provide a method for producing a surfactant composition excellent in gel dispersibility.SOLUTION: In the method for producing a surfactant composition containing (A) an anionic surfactant, (B) a nonionic surfactant, (C) an amphoteric surfactant, (D) a water-swellable clay mineral and (E) water, the (A) to (C) components and a part (E1) of the (E) component are mixed at ordinary temperature so that the mass ratio of (E1)/((A)+(B)+(C)) becomes 0.6-1.0 and then heated to 50-80°C, and subsequently, the (D) component and a part (E2) of the (E) component are mixed so that the mass ratio of (E2)/((A)+(B)+(C)) becomes 0.1-0.3 and the mass ratio of (D)/((A)+(B)+(C)) becomes 0.001-0.004, and further, the remainder (E3) of the (E) component is mixed.COPYRIGHT: (C)2012,JPO&INPIT【課題】ゲル分散性に優れる界面活性剤組成物の製造方法を提供する。【解決手段】(A)アニオン界面活性剤と、(B)非イオン界面活性剤と、(C)両性界面活性剤と、(D)水膨潤性粘土鉱物と、(E)水とを含有する界面活性剤組成物の製造方法であって、(A)~(C)成分と(E)成分の一部(E1)を質量比で(E1)/((A)+(B)+(C))=0.6~1.0となるように常温で混合した後、50~80℃に加温し、次いで(D)成分と(E)成分の一部(E2)を、質量比で(E2)/((A)+(B)+(C))=0.1~0.3、及び(D)/((A)+(B)+(C))=0.001~0.004となるように混合し、さらに(E)成分の残部(E3)を混合する。【選択図】なし
