AQUEOUS SLURRY CONTAINING ALPHA-SULFOFATTY ACID ALKYL ESTER SALT HAVING IMPROVED COLOR TONE

PURPOSE: To safely produce an aqueous slurry having high quality and improved color tone on an industrial scale at a low cost because of the non-use of large amounts of solvent, bleaching agent and a high bleaching temperature. CONSTITUTION: This aqueous slurry containing an α-sulfofatty acid alkyl...

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Bibliographic Details
Main Authors TAKAMI AZUSA, NAGAAI KAZUO, NISHIO HIROSHI, TANO TETSUO
Format Patent
LanguageEnglish
Published 14.01.1997
Edition6
Subjects
ACYCLIC OR CARBOCYCLIC COMPOUNDS
ANIMAL AND VEGETABLE OILS, FATS, FATTY SUBSTANCES AND WAXES
CANDLES
CHEMISTRY
DETERGENT COMPOSITIONS
DETERGENTS
FATTY ACIDS THEREFROM
METALLURGY
ORGANIC CHEMISTRY
RECOVERY OF GLYCEROL
RESIN SOAPS
SOAP OR SOAP-MAKING
USE OF SINGLE SUBSTANCES AS DETERGENTS
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Summary:PURPOSE: To safely produce an aqueous slurry having high quality and improved color tone on an industrial scale at a low cost because of the non-use of large amounts of solvent, bleaching agent and a high bleaching temperature. CONSTITUTION: This aqueous slurry containing an α-sulfofatty acid alkyl ester salt contains 20-75wt.% of an α-sulfofatty acid alkyl ester salt of formula (R is an 8-22C alkyl or alkenyl; R' is a 1-6C alkyl; M is an alkali metal such as Na or K) and <=0.05wt.% (based on the α-sulfofatty acid alkyl ester salt) of a reducing inorganic compound such as sulfurous acid, its salt, thiosulfuric acid or its salt. The aqueous slurry can be produced by sulfonating a fatty acid alkyl ester with sulfuric anhydride, etc., esterifying the sulfonated product with a small amount of a 1-6C alcohol and neutralizing the esterified product with an alkaline aqueous solution. The aqueous slurry is preferably maintained to pH4-8 and at 40-60 deg.C.
Bibliography:Application Number: JP19950184926