A METHOD OF DRY CLEANING ARTICLES USING DENSIFIED CARBON DIOXIDE

A METHOD OF DRY CLEANING ARTICLES USING DENSIFIED CARBON DIOXIDE

Disclosed is a method for the removal of stains from articles, especially fabric, using densified carbon dioxide. The invention is concerned with a method of dry cleaning an article comprising the successive steps of (a) contacting the article with a fluid dry cleaning composition containing densifi...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: VAN ROOSMALEN, MAAIKE, BREIJER, ALEX, WICHHART, MAARTEN, WOERLEE, GEERT FEYE, VAN GANSWIJK, JAN WILLEM
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
ANIMAL AND VEGETABLE OILS, FATS, FATTY SUBSTANCES AND WAXES
BLEACHING LEATHER OR FURS
CANDLES
CHEMISTRY
DETERGENT COMPOSITIONS
DETERGENTS
DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS,YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS
FATTY ACIDS THEREFROM
FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
LAUNDERING
METALLURGY
RECOVERY OF GLYCEROL
RESIN SOAPS
SOAP OR SOAP-MAKING
TEXTILES
TREATMENT OF TEXTILES OR THE LIKE
USE OF SINGLE SUBSTANCES AS DETERGENTS
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Beschreibung
Zusammenfassung:Disclosed is a method for the removal of stains from articles, especially fabric, using densified carbon dioxide. The invention is concerned with a method of dry cleaning an article comprising the successive steps of (a) contacting the article with a fluid dry cleaning composition containing densified carbon dioxide at a temperature between -20 and 60° C. and a pressure between 1 and 100 MPa, so as to allow stains to dissolve and/or to disperse into the fluid dry cleaning composition and (b) separating the article and the fluid dry cleaning composition; wherein the fluid dry cleaning composition comprises an ionic surfactant in a concentration between 0.01 and 15% by weight of the carbon dioxide and wherein during step a) at least 10%, preferably at least 30%, of said ionic surfactant is present in an undissolved solid form.