Method for the use of hydrophobic bleaching systems in cold...

D - Textiles – Paper – 06 – L

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D06L 3/02 (2006.01) C11D 3/39 (2006.01)

Patent

CA 2437900

A method for the treatment of a non-finished textile component in a cold batch process is provided. The method comprises the steps of treating a non-finished textile component in an aqueous bleaching solution of hydrogen and a hydrophobic bleach activator or hydrophobic peracid followed by a treatment time of from about 1 hour to about 15 hours at a temperature of 35~ C or less. Preferred bleach activators include the alkanoyloxybenzene sulfonates and in particular noanoyloxybenzene sulfonate. The method provides acceptable whiteness and superior fiber protection and fabric strength benefits in significantly reduced treatment times versus conventional.

L'invention concerne un procédé pour le traitement d'une composante textile non finie dans un processus d'enroulement à froid. Ce procédé comprend l'étape consistant à traiter une composante textile non finie dans une solution de blanchiment aqueuse d'hydrogène et dans un activateur de blanchiment hydrophobe ou un peracide hydrophobe, suivie d'un temps de traitement compris entre environ 1 heure et environ 15 heures à une température égale ou inférieure à 35 ·C. Des activateurs de blanchiment préférés comprennent les alkanoyloxybenzènes sulfonates et plus spécifiquement le noanoyloxybenzène sulfonate. Ce procédé permet d'obtenir une blancheur acceptable et une protection des fibres accrue, ainsi que des bénéfices au niveau de la résistance du tissu, ceci dans des temps de traitement significativement réduits par rapport à ceux des procédés conventionnels.

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