高級脂肪酸ナトリウム及び高級脂肪酸カリウム含有石鹸組成物の製造方法

Japanese Patent JP7432942

B2

Provided is a method for productively producing a liquid or a paste soap composition which, even at low temperatures, maintains a liquid or paste state for a long time without separating, is gentle on the skin and eyes, and has high foaming power and good cleaning power. In this production method for a soap composition containing a sodium of a higher fatty acid and a potassium of a higher fatty acid, a liquid soap composition is prepared by: heating, to at least 80°C, and melting a mixed saturated fatty acid which is composed of 12- to 18-carbon saturated fatty acids containing 85 to 100 mol% of a 12- and a 14-carbon saturated fatty acid and does not contain an 8- to 10-carbon saturated fatty acid; then adding a cooling liquid composed of glycerin and water to the mixed saturated fatty acid all at once, cooling the mixture to a temperature at least 20°C lower than the heated temperature, and then heating the mixture again and holding the mixture at a temperature between 40 and 55°C; adding a mixed alkaline aqueous solution all at once to the mixed fatty acid-containing liquid that has been heated and held at said temperature, said mixed alkaline aqueous solution being obtained by mixing potassium hydroxide and/or potassium carbonate and sodium hydroxide and/or sodium carbonate in a molar ratio in the range from 90/10 to 30/70; and, while agitating, heating the mixture and then holding the mixture at a temperature between 80 and 95°C in order to neutralize the mixture.

Manta Shibata
Kazuko Shibata
Yoshiro Nakano
Hayazaki Tai

JP2021201288A

February 19, 2024

December 10, 2021

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SPH Co., Ltd.

C11D17/08; A61K8/02; A61K8/19; A61K8/34; A61K8/36; A61Q19/10; C11D9/26; C11D17/06

JP2015199854A
JP201328759A
JP2008239792A
JP2016180066A
JP2021187744A

WO2011122187A1

Tamura
Junko Sugimura

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