Laundry compositions for use in a tumble dryer

Details Laundry compositions for use in a tumble dryer Laundry compositions for use in a tumble dryer

C - Chemistry, Metallurgy

11

D

C11D 3/33 (2006.01) C11D 17/04 (2006.01)

Patent

CA 2459083

A laundry treatment process, which comprises tumble drying clothes in the presence of a chelating agent which has one nitrogen atom and at least four carboxylic acid groups per molecule, or a salt thereof. The preferred chelating agent being is a disuccinnic acid or a salt thereof of the general formula HOOC-(R1.COOH)R2-NR5-R3(R4.COOH)-COOH wherein R1-R5 are preferably each independently, C1-C5 alkyl, hydroxy-alkyl or hydrogen.

L'invention concerne un procédé de traitement de linge, consistant à faire sécher les vêtements par culbutage, en présence d'un agent chélateur qui comporte un atome d'azote et au moins quatre groupes acide carboxylique par molécule, ou en présence d'un sel dudit agent chélateur. On utilise de préférence comme agent chélateur un acide disuccinique ou un sel de ce dernier, de formule générale HOOC-(R¿1?.COOH)R¿2?-NR¿5?-R¿3?(R¿4?.COOH)-COOH, dans laquelle R1-R5 représentent, de préférence indépendamment l'un de l'autre, alkyle C1-C5, hydroxy-alkyle or hydrogène.

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