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

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

D - Textiles, Paper

06

L

D06L 1/00 (2006.01) D06L 1/04 (2006.01) D06L 3/02 (2006.01)

Patent

CA 2211412

A system for dry cleaning soils from fabrics comprising densified carbon dioxide and a surfactant in the densified CO2. The surfactant has a polysiloxane, a branched polyalkylene oxide and a halocarbon group which is a functional CO2-philic moiety connected to a CO2-phobic functional moiety. The surfactant either exhibits an HLB of less than 15 or has a ratio of siloxyl to substituted siloxyl groups of greater than 0.5:1.

L'invention concerne un système pour le nettoyage à sec de tissus souillés, comprenant du gaz carbonique densifié et un tensioactif dans ce CO¿2? densifié. Le tensioactif comporte un polysiloxane, un oxyde de polyalkylène ramifié ou un groupe halocarboné qui est une fraction CO¿2?-phile liée à une fraction fonctionnelle CO¿2?-phobe. Le tensioactif présente un HLB de moins de 15 ou il présente un rapport de groupes siloxyle sur groupes siloxyle substitués supérieur à 0,5:1.

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