METHOD FOR TREATING FABRICS WITH A VARYING PH PROFILE DURING WASH AND RINSE CYCLES

The present invention relates to a method for treating fabrics by contacting the fabrics with an aqueous wash liquor at varying pH values that increase from about 7-9 to about 10-13 (optionally down to about 7-9), maintaining such contact at pH 10-13 for about 5-30 minutes, followed by contacting th...

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Bibliographic Details
Main Authors ARGENTOU, Evangelia, BROOKER, Anju, BUENO ROMO, Laura, LATIMER, Katherine, AMADOR ZAMARRENO, Carlos, MOON, Libbi
Format Patent
LanguageEnglish
French
Published 18.06.2020
Subjects
ANIMAL AND VEGETABLE OILS, FATS, FATTY SUBSTANCES AND WAXES
CANDLES
CHEMISTRY
DETERGENT COMPOSITIONS
DETERGENTS
FATTY ACIDS THEREFROM
METALLURGY
RECOVERY OF GLYCEROL
RESIN SOAPS
SOAP OR SOAP-MAKING
USE OF SINGLE SUBSTANCES AS DETERGENTS
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Summary:The present invention relates to a method for treating fabrics by contacting the fabrics with an aqueous wash liquor at varying pH values that increase from about 7-9 to about 10-13 (optionally down to about 7-9), maintaining such contact at pH 10-13 for about 5-30 minutes, followed by contacting the fabrics with an aqueous rinse liquor at an acid pH value of about 4-6. Such method provides a significantly improved stain removal benefit without any formulation changes. Further, it enables the use of laundry detergent compositions that are essentially free of alkoxylated surfactants, such as alkylalkoxylated sulfates or alkylalkoxylated alcohols, while still delivering satisfactory stain removal results. La présente invention concerne un procédé de traitement de tissus par mise en contact des tissus avec une liqueur de lavage aqueuse à des valeurs de pH variables qui augmentent d'environ 7-9 à environ 10-13 (éventuellement vers le bas jusqu'à environ 7-9), par maintien d'un tel contact à un pH de 10-13 pendant environ 5 à 30 minutes, suivi d'une mise en contact des tissus avec une liqueur de rinçage aqueuse à une valeur de pH acide d'environ 4 à 6. Un tel procédé fournit un bénéfice d'élimination de taches significativement amélioré sans modifications de formulation. En outre, il permet l'utilisation de compositions détergentes de lessive qui sont essentiellement exemptes de tensioactifs alcoxylés, tels que des sulfates alkylalcoxylés ou des alcools alkylalcoxylés, tout en fournissant des résultats satisfaisants d'élimination des taches.
Bibliography:Application Number: WO2019US62518