Title:
PRODUCTION METHOD FOR SOAP COMPOSITION CONTAINING SODIUM OF HIGHER FATTY ACID AND POTASSIUM OF HIGHER FATTY ACID
Document Type and Number:
WIPO Patent Application WO/2023/106393
Kind Code:
A1
Abstract:
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.
Inventors:
SHIBATA MITSUTA (JP)
SHIBATA KAZUKO (JP)
NAKANO YOSHIO (JP)
HAYASAKI YASUSHI (JP)
SHIBATA KAZUKO (JP)
NAKANO YOSHIO (JP)
HAYASAKI YASUSHI (JP)
Application Number:
PCT/JP2022/045428
Publication Date:
June 15, 2023
Filing Date:
December 09, 2022
Export Citation:
Assignee:
SPH CORP (JP)
International Classes:
C11D9/26; A61K8/02; A61K8/19; A61K8/34; A61K8/36; A61Q19/10; C11D9/18; C11D17/00; C11D17/08
Domestic Patent References:
| WO2011122187A1 | 2011-10-06 |
Foreign References:
| JP2015199854A | 2015-11-12 | |||
| JP2013028759A | 2013-02-07 | |||
| JP2008239792A | 2008-10-09 | |||
| JP2016180066A | 2016-10-13 | |||
| JP2021187744A | 2021-12-13 | |||
| JP2006206525A | 2006-08-10 | |||
| JP2002322498A | 2002-11-08 | |||
| JP2004210704A | 2004-07-29 | |||
| JP2011121870A | 2011-06-23 | |||
| JP2015196713A | 2015-11-09 |
Other References:
"Fatty Acid Chemistry"
Attorney, Agent or Firm:
TAMURA Chikashi et al. (JP)
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