Low-temperature dyeing additive for protein fiber products...

Details Low-temperature dyeing additive for protein fiber products... Low-temperature dyeing additive for protein fiber products...

D - Textiles, Paper

06

P

D06P 1/642 (2006.01) D06P 1/667 (2006.01) D06P 1/673 (2006.01) D06P 1/92 (2006.01) D06P 3/06 (2006.01) D06P 3/14 (2006.01) D06P 3/16 (2006.01)

Patent

CA 2152592

A low-temperature dyeing additive for protein fiber products, which has a pH value of 3.5 to 9.5 and contains 0.025-40 g, per liter of water, of at least one solvent which has a donor number of 24 to 50 and an acceptor number of 10 to 24 in the presence or absence of a surfactant and is freely miscible with water. If necessary, the additive further contains 0.025-4.0 g of tributoxyethyl phosphate per liter of water and/or 0.05-40 g of at least one kind of anion having an enthalpy of hydration (-.DELTA.HKJ.mol-1) of 200-290 per liter of water. This additive serves to relax the higher-order structures of the protein fibers before or after dyeing to thereby swell the fibers, thus rendering the fibers readily dyeable without detriment to the properties thereof.

Un additif de teinture à basse température pour produits à fibres protéiques présente un pH allant de 3,5 à 9,5, et contient 0,025 à 40 g par litre d'eau d'au moins un solvant doté d'un nombre de donneurs allant de 24 à 50 et d'un nombre d'accepteurs allant de 10 à 24 en présence ou non d'un agent tensio-actif, et se mélange librement à l'eau. Cet additif contient de plus, si nécessaire, 0,025 à 4 g de phosphate de tributoxyéthyle par litre d'eau et/ou 0,05 à 40 g d'au moins un type d'anion qui présente une enthalpie d'hydratation (-.DELTA.H¿KJ.mol?-1) de 200 à 290 par litre d'eau. Cet additif permet d'assouplir les structures d'ordre supérieur des fibres protéiques, avant ou après teinture, pour les faire gonfler, ce qui les rend faciles à teindre sans que cela nuise à leurs propriétés.

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