Preparation of color-stable, light-colored, aqueous salt pastes of wash-active, alpha -sulfofatty acid esters

This invention is directed to a process for the preparation of color-stable, light-colored aqueous salt pastes of wash-active esters of alpha -sulfofatty acids with monohydric C1-C8-alcohols by a combined bleaching treatment of dark-colored alpha -sulfofatty acid ester salt paste with hydrogen perox...

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Bibliographische Detailangaben
Hauptverfasser:	LINDE, KARL-HEINZ, KLOETZER, DIETRICH, OJUST, KLAUS
Format:	Patent
Sprache:	eng
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS ADHESIVES ANIMAL AND VEGETABLE OILS, FATS, FATTY SUBSTANCES AND WAXES CANDLES CHEMISTRY DETERGENT COMPOSITIONS DETERGENTS DYES FATTY ACIDS THEREFROM MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS ORGANIC CHEMISTRY PAINTS POLISHES RECOVERY OF GLYCEROL RESIN SOAPS SOAP OR SOAP-MAKING USE OF SINGLE SUBSTANCES AS DETERGENTS
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Beschreibung
Zusammenfassung:	This invention is directed to a process for the preparation of color-stable, light-colored aqueous salt pastes of wash-active esters of alpha -sulfofatty acids with monohydric C1-C8-alcohols by a combined bleaching treatment of dark-colored alpha -sulfofatty acid ester salt paste with hydrogen peroxide and alkali metal hypochlorite. According to the process, dark-colored alpha -sulfofatty acid ester salt paste is first subjected in a preliminary bleaching step to bleaching with alkali metal hypochlorite in a neutral to mildly alkaline aqueous medium, any excess metal hypochlorite is removed, and the paste is subjected in a final bleaching step to bleaching in a mildly acidic medium with hydrogen peroxide or with one or more compounds which yield hydrogen peroxide.