Disperse dyestuff mixtures

Details Disperse dyestuff mixtures Disperse dyestuff mixtures

D - Textiles, Paper

06

P

8/11

D06P 3/52 (2006.01) C09B 29/08 (2006.01) D06P 1/16 (2006.01) D06P 3/54 (2006.01)

Patent

CA 1045311

ABSTRACT OF THE DISCLOSURE There is provided a process for the coloration of aromatic polyester textile materials which comprises applying to the said textile material by a dyeing, padding or printing process an aqueous dispersion of a dyestuff mixture consisting of:- (a) from 2% to 60% by weight (based on the total weight of dyestuffs in the mixture) of a water-insoluble monoazo dyestuff, free from sulphonic acid and carboxylic acid groups,which is of the formula:- Image Formula I wherein Y represents hydrogen, nitro, lower alkyl or optionally substituted phenyl; Z is lower alkyl optionally substituted phenyl, nitro, cyano, optionally substituted lower alkoxycarbonyl or carbonamido; V is hydrogen, chlorine, optionally substituted alkyl or optionally substituted alkoxy; W is hydrogen, chlorine, bromine, optionally substituted alkyl, optionally substituted alkoxy, optionally substituted alkylthio, lower alkoxycarbonyl, carbonamido, sulphonamido, lower alkylcarbonyl, lower alkylsulphonyl, lower alkylsulphonyloxy, cyano, trifluoromethyl, lower alkylcarbonyloxy, benzoyloxy, lower alkylsulylphonylamino, or sulphamato; R1 and R2 each independently represent a hydrogen atom or an optionally substituted alkyl, cycloalkyl, phenyl or heterocyclic radical or R1 and R2 together form with the nitrogen atom N a 5- or 6-membered nitrogen- containing heterocyclic ring, or R1 may be joined together with V when it is in ortho position to the amino group to form a 6-membered nitrogen-containing heterocyclic-ring, or V and W when they are in ortho position to each other may be joined together to form a group of 4 carbon atoms so as to form a naphthalene ring; (b) from 40% to 95% by weight (based on the total weight of dyestuffs in the mixture) of (i) at least one disperse anthraquinone dyestuff of the formula:- Image Formula II which can contain up to 30% of its own weight of a disperse anthraquinone dyestuff of the formula:- Image Formula III wherein L and L1 each independently represent a phenyl radical which can be substituted by one or more chlorine or bromine atoms or by hydroxy, amino, lower alkyl, lower alkoxy, hydroxyloweralkoxy, N-lower alkylamino, acylamino, N:N-di(lower alkyl)amino, carbo lower alkoxy, lower alkoxycarbonyloxy or lower alkylcarbonyloxy groups and (c) from 0 to 50% by weight (based on the total weight of dyestuffs present in the mixture) of at least one yellow to red disperse dyestuff.

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