D - Textiles – Paper – 06 – P
Patent
D - Textiles, Paper
06
P
D06P 1/653 (2006.01) D06M 13/238 (2006.01)
Patent
CA 2172988
The invention consists of a process to improve the resistance to stains on yarns, on the basis of wool, silk, polyamide, polyacrylonitrile, natural and artificial cellulosic fibres and in general, all other synthetical fibres which can be dyed. According to the invention the yarns are treated during the dyeing process with an aqueous solution containing up to 5 % tannic acid in acid medium. It is economically advisable to add a stabiliser to the solution to avoid oxidation of the solution and the fibres, and possibly a wetting agent. Preferably the treatment is made during the dyeing procedure, before, during or after the effective dyeing step.
L'invention concerne un procédé permettant d'améliorer la résistance aux taches sur des fils à base de laine, soie, polyamide, polyacrilonitrile, de fibres cellulosiques artificielles et naturelles et, en général, de toutes autres fibres synthétiques pouvant être teintes. Le procédé selon l'invention consiste à traiter les fils pendant le processus de teinture avec une solution aqueuse contenant jusqu'à 5 % d'acide tannique en milieu acide. Pour des raisons économiques, il est conseillé d'ajouter un stabilisateur dans la solution de manière à empêcher l'oxydation de cette dernière et des fibres, ainsi, qu'éventuellement, un agent mouillant. Le traitement est, de préférence, effectué pendant la procédure de teinture, avant, pendant ou après la phase de teinture effective.
Ascend Performance Materials Llc
Goudreau Gage Dubuc
N.v. Denderland-Martin
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