Dry cleaning system using densified carbon dioxide and a...

D - Textiles – Paper – 06 – L

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8/118, 134/31

D06L 1/00 (2006.01) D06L 1/04 (2006.01)

Patent

CA 2330328

A system for dry cleaning soils from fabrics is described which contains densified carbon dioxide combined with a selected surfactant. The densified carbon dioxide is used in a temperature range of about -78.5 ~C to about 100 ~C and a pressure range of about 14.7 psi to about 10,000 psi. The surfactant is selected from one of two groups of compounds having formula (I) as described in the text or a second group of siloxane compounds having a formula [AB]y as described. A process for using the dry cleaning system is also described.

L'invention concerne un système de nettoyage des sols à sec à partir d'un tissu renfermant du gaz carbonique densifié, associé à un agent tensioactif sélectionné. On utilise le gaz carbonique densifié à une température se trouvant dans la plage comprise entre environ -78,5 ·C et 100 ·C, et à une pression se trouvant dans la plage comprise entre environ 14,7 psi et 10 000 psi. L'agent tensioactif est sélectionné dans l'un des deux groupes de composés représentés par la formule (I) décrits dans le descriptif, ou d'un second groupe de composés de siloxane représentés par la formule [AB]¿y?. L'invention concerne également un procédé d'utilisation du système de nettoyage à sec.

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