A reactive dye of formula ##STR00001## wherein Z.sub.1 and Z.sub.2 are each independently of the other vinyl or a radical CH.sub.2CH.sub.2Y and Y is a group removable under alkaline conditions, n is the number 1, 2, 3 or 4, m is the number 2, 3 or 4, q is the number 0 or 1, and the substituents (SO.sub.3H).sub.n, SO.sub.2Z.sub.1 and NHCO(CH.sub.2).sub.mSO.sub.2Z.sub.2 are bound to the benzene rings A, B and/or C, said benzene rings A, B and/or C are optionally further substituted by at least one substituent selected from the group C.sub.1-C.sub.4alkyl, C.sub.1-C.sub.4alkoxy and halogen,
is suitable for dyeing and printing cellulosic or amide-group-containing fibre materials.

The present invention provides a post-fabrication modification approach for the fabrication of colored and chromic materials and sensors using plasma surface modification to covalently bind the coloring agent to the substrate, thus avoiding leaching of the dye. Advantageously, in said methods, said coloring agent is a dye or pigment linked to a radical sensitive functional group, such as an alkenyl or alkynyl functional group, and is applied to the substrate prior to the gas plasma treatment. The methods envisaged herein are generic in nature, which allow the covalent immobilization of various dyes on different materials. The covalently coated materials after plasma surface modification, particularly the covalently coated chromic materials and sensors, can be used in many different applications, such as protective textile and wound dressing applications.

Dye mixtures comprising dyes of formula (I) and (II) process for the production thereof and use of said mixtures.

##STR00001##

Mixtures of fiber reactive dyes and their use of for the dyeing of hydroxyl- and carboxamide-containing material in blue and navy shades are described.

A reactive dye of formula ##STR00001##
wherein M is hydrogen, an alkali metal or one equivalent of an alkaline earth metal, Z.sub.1 is vinyl, ?-sulfatoethyl or the radical NHCO(CH.sub.2).sub.3SO.sub.2CH.sub.2CH.sub.2Cl; R.sub.1 denotes H or sulfo; and R.sub.2 is H, methyl, methoxy or sulfo, n is the number 3; Y is vinyl or a radical CH.sub.2CH.sub.2-U and U is Cl or OSO.sub.3H, is suitable for dyeing and printing cellulosic or amide-group-containing fibre materials.

A whitening composition for fabric, in particular, unbleached cellulosic fiber-containing fabric. The composition includes a blue dye, a violet dye; and, optionally, a thickening agent; wherein the composition is free of bleaching agents and optical brighteners. A method of whitening a fabric using whitening compositions is also disclosed.

The present invention relates to a reactive dye bath and a dyeing process for textiles. The reactive dye bath for textiles comprises an organic solvent, an aqueous dye solution, a surfactant and a co-surfactant. The reactive dye bath or the dyeing process of the present invention allows for full up-take of the dye without subjecting the textiles to any special pre-treatment and without the addition of a salt for accelerating dyeing, so as to obtain dyed textiles with a higher dyeing depth, uniformity and fastness.

The present invention provides a post-fabrication modification approach for the fabrication of colored and chromic materials and sensors using plasma surface modification to covalently bind the coloring agent to the substrate, thus avoiding leaching of the dye. Advantageously, in said methods, said coloring agent is a dye or pigment linked to a radical sensitive functional group, such as an alkenyl or alkynyl functional group, and is applied to the substrate prior to the gas plasma treatment. The methods envisaged herein are generic in nature, which allow the covalent immobilization of various dyes on different materials. The covalently coated materials after plasma surface modification, particularly the covalently coated chromic materials and sensors, can be used in many different applications, such as protective textile and wound dressing applications.

A reactive dye of formula

##STR00001## wherein Z.sub.1 and Z.sub.2 are each independently of the other vinyl or a radical CH.sub.2CH.sub.2Y and Y is a group removable under alkaline conditions, n is the number 1, 2, 3 or 4, m is the number 2, 3 or 4, q is the number 0 or 1, and the substituents (SO.sub.3H).sub.n, SO.sub.2Z.sub.1 and NHCO(CH.sub.2).sub.mSO.sub.2Z.sub.2 are bound to the benzene rings A, B and/or C, said benzene rings A, B and/or C are optionally further substituted by at least one substituent selected from the group C.sub.1-C.sub.4alkyl, C.sub.1-C.sub.4alkoxy and halogen, is suitable for dyeing and printing cellulosic or amide-group-containing fibre materials.

Mixtures of fibre reactive dyes and their use of for the dyeing of hydroxyl- and carboxamide-containing material in blue and navy shades.