Process for reducing sulfur and vat dyes

Details Process for reducing sulfur and vat dyes Process for reducing sulfur and vat dyes

D - Textiles, Paper

06

P

D06P 1/22 (2006.01) C09B 67/28 (2006.01) C09B 67/30 (2006.01) D06P 1/30 (2006.01) D06P 1/48 (2006.01) D06P 1/651 (2006.01) D06P 5/20 (2006.01)

Patent

CA 2274155

This invention concerns a process for reducing dyes of the group consisting of sulfur and vat dyes. The reduction is carried out in an aqueous alkali medium using isomaltulose or a mixture containing isomaltulose as the reducing agent.

L'invention concerne un procédé de réduction de colorants du groupe constitué des colorants au soufre et des colorants de cuve. La réduction se fait dans un milieu alcalin aqueux, au moyen d'isomaltulose ou d'un mélange contenant de l'isomaltulose comme agent de réduction.

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