Abstract: A process is described for separating sodium sulfate from aqueous solutions, containing less than 2% by weight of chloride, of certain fiber-reactive copper-formazan dyestuffs wherein this dyestuff solution is cooled down to a temperature between +5.degree. C. and -15.degree. C. In the course of the cooling the sodium sulfate precipitates in the form of the decahydrate and can be separated off in conventional manner, for example by filtration. The products obtained in this way are liquid low-salt aqueous copper-formazan dyestuff preparations which contain less than 4% by weight of sodium sulfate.

Abstract: A textile finishing process in which there is employed, as a pH regulator, a compound or a mixture of compounds of formula I ##STR1## in which p is from 1 to 20,R is hydrogen, C.sub.1-3 alkyl or C.sub.1-3 alkyl substituted by hydroxyR' has independently one of the significances given for R or is --CO--R andA is --CH.sub.2 CH.sub.2 --; --CH.sub.2 --CH.sub.2 --CH.sub.

Abstract: The invention relates to a process for dyeing synthetic polyamide fibre material with dyes or dye mixtures in the presence of a mixture of dyeing assistants, which comprises using for the dyeing of these materials an aqueous liquor which contains at least one anionic dye which, under the defined dyeing conditions, has a degree of exhaustion of at least 95% at 1/1 standard depth of shade, and a dyeing assistant mixture containing an anionic compound, a quaternary compound and a non-ionic compound, and wherein the liquor contains an alkali metal salt and an organic acid, and finishing the dyeing at pH 5-7, preferably pH 5.5-6, and at a temperature of 95.degree. to 130.degree. C.The process according to the invention is suitable for dyeing synthetic polyamide materials, producing level dyeings having good fastness properties with all types of dye or mixtures of dyes of identical or different types.

Abstract: The novel asymmetric 1:2 chrome complex dyes of the formula I given in claim 1 are suitable in particular for dyeing wool or polyamide and especially leather.

Abstract: A precondensate obtained by reacting(A) the product of reacting a mono- or polyfunctional primary or secondary amine with cyanamide, dicyandiamide, guanidine or biguanidine and(B) an epihalohydrin is obtained in the form of a stable aqueous dispersion by acidifying the reaction product, optionally in the presence of a water-soluble polymer. The product is useful as an after-treatment agent to improve the fastness of dyeings on cotton, wool or silk.

Abstract: The partly known blue dyestuffs of the formula ##STR1## wherein R.sub.1 denotes hydrogen, alkyl, aralkyl, alkenyl, cycloalkyl or aryl,R.sub.2 denotes hydrogen or alkyl,Me.sup.(+) denotes a cation andn denotes 1 or 2,are highly suitable for the trichromatic dyeing of polyamide fibre materials, producing level dyeings thereon with a good standard of fastness.

Abstract: The invention describes a process for dyeing or printing natural or synthetic polyamide fibre material by a rapid fixation method, which comprises the use of dyes or mixtures of dyes of the formulae as defined in the description in a continuous dyeing method or printing method, and fixing the dyes or prints by steaming for less than 3 minutes such that at least 95% fixation of the dyes is achieved. The process is particularly suitable for combination dyeing and polyamide carpet printing, and produces level dyeings and prints having excellent fastness properties.

Abstract: A glass substrate is dyed or printed with a water-soluble polycationic dyestuff in the absence of a size or binding agent. The resulting dyeings have good rubbing fastnesses.

Abstract: Described is a process for the production of substantially dustless water-soluble dye or optical brightener compositions, which process comprises mixing a dry, solid inorganic salt, heated to at least 50.degree. C., with a mixture of at least one dye or optical brightener, an adhesive as e.g. sorbitol, a dust binding surface active agent and further additives. Such compositions are negligibly dusty to dustfree, and retain these properties even after storage for months, particularly in the case where spray-dried material is used.

Abstract: The invention relates to solid formulations of metal complex dyes, which formulations are obtained by dissolving or suspending at least one metal complex dye in water with the addition of an anionic dispersant or mixture of dispersants, and 1 to 20% by weight, based on the final formulation, of a non-ionic ethylene oxide adduct having a molecular weight of 200 to 5000, and optionally further ingredients, subsequently mixing the components and spray drying the solution or suspension.Such formulations are readily wettable and have a cold water dispersibility of .gtoreq.30 g/l.

Abstract: A process for dyeing paper which comprises the use of dyes of the formula ##STR1## wherein R is hydrogen, hydroxyl or amino, X is the azoxy or azo group, and n is 1 or 2, and the bonds of the complexing oxygen atom in the .alpha.-position and of the azo group in the .beta.-position at the naphthalene nuclei are mutually interchangeable. Dyeings of good wetfastness and lightfastness are obtained.

Abstract: A process for dyeing or printing fiber materials containing hydroxy and/or carbonamide groups, in which process a fiber-reactive, water-soluble dyestuff of the type defined below is applied to the fiber material and is then fixed on the fiber material at an ordinary or elevated temperature, if appropriate in the presence of agents having an alkaline reaction. This water-soluble dyestuff, which contains at least one sulfonic acid group, contains one or more groupings belonging to the group comprising the formulae (1a), (1b) and (1c)--SO.sub.2 --CH.dbd.CH.sub.2 (1a)--SO.sub.2 --CH.sub.2 --CH.sub.2 --Hal (1b)--SO.sub.2 --CH.sub.2 --CH.sub.

Abstract: Use of mono-copper complexes of dyestuffs of the formula ##STR1## wherein X is H or SO.sub.3 H andR is H, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy, carboxyl, halogen or sulpho,and of mixtures thereof with the bis-copper complexes of (II) in amounts of up to 50% by weight, for dyeing natural and synthetic materials, in particular cellulose materials, leather, wool and polyamide.

Abstract: The dyes of the formula I ##STR1## in which Me is cobalt or chromium, A and A' independently of each other are each the radical of an amine of the benzene series which carries the hydroxyl group in the o-position relative to the azomethine group, Ar.sub.1 and Ar.sub.3 independently of each other are each a substituted or unsubstituted phenylene or naphthylene radical, Ar.sub.2 and Ar.sub.4 independently of each other are each a substituted or unsubstituted benzene or naphthalene radical, m and n independently of each other are each 0 or 1, p is an integer from 3 to 6 and Ka.sym. is a cation, are suitable for dyeing polyamides, particularly wool and leather.

Abstract: Dyes of the formula I ##STR1## in which A, B, C, D, E, F, Z, Z', X, X', n, n.sub.1, n.sub.2 and n.sub.3, p and Ka.sup..sym. are as defined in claim 1, are particularly suitable for dyeing wool or polyamide and especially leather.

Abstract: Novel chromium complex dyes are disclosed which have the formula ##STR1## wherein S.sub.1 represents a hydrogen or halogen atom, a nitro group, a sulpho group, an alkyl or alkoxy radical, an acylamino or arylazo group,S.sub.2 represents a hydrogen or halogen atom, a nitro group, a sulpho group, an alkyl or alkoxy radical,S.sub.3 represents a hydrogen atom, a nitro group or a halogen atom,P is 1 or 2,R represents a fluorochloropyrimidyl or fluorotriazinyl radical, a chloroacetyl, bromoacetyl, .alpha.-chloro- or .alpha.-bromoacryloyl radical or an .alpha.,.beta.-dichloro- or .alpha.,.beta.-dibromopropionyl radical, andK.sup..sym. represents a cation.

Abstract: A process for dyeing a voluminous flat form polyamide substrate with anionic dyestuffs according to the cold pad-batch method, which process comprises the step of selecting the initial pH of the dyeing liquor within a range depending on the affinity of the substrate for anionic dyestuffs and the molecular weight of the anionic dyestuffs so as to give a substantial linear exhaustion of the dyeing liquor, the dyeing liquor being free from a thickening, swelling or foaming agent.

Abstract: Disclosed are the 1:2 chromium complex of the formula ##STR1## and the alkali metal salts thereof which are useful for the coloration of oxide layers produced on aluminum and alloys thereof and for dyeing natural and synthetic polyamides.

Abstract: A process for the continuous dyeing of fabric webs, in which the fabric web is impregnated at a temperature between 20.degree. and 95.degree. C. with an aqueous liquor which contains dissolved and/or dispersed dyestuffs and squeezed, and the dyestuffs are fixed in a steam/air mixture, which comprises fixing the dyestuff without the impregnated fabric having been dried at an intermediate stage, keeping the dry temperature of the steam/air mixture between 110.degree. and 140.degree. C., adjusting the steam content of the steam air mixture in such a way that the wet temperature of the moist fabric web is between 50.degree. and 95.degree. C., and fixing the dyestuffs for at least 20 seconds.

Abstract: The dyes of the formula I given in claim 1 are suitable for dyeing furs and in particular leather.They are preferably used in admixture with a blue dye and a red dye for the trichromatic dyeing of leather.

Abstract: The invention relates to a process for the non-skittery and level dyeing of fibre material made of natural polyamides, with dyes or mixtures of dyes in the presence of a mixture of dyeing assistants, which comprises using for dyeing these materials an aqueous liquor which contains at least one anionic wool dye which, under the defined dyeing conditions at 1/1 standard depth, exhausts to at least 95%, and a dyeing assistant mixture containing an anionic compound of the formula ##STR1## in which R is an alkyl or alkenyl radical having 12 to 22 carbon atoms, M is hydrogen, an alkali metal or ammonium, and m and n are integers such that the sum of m and n is 2 to 14, a quaternary compound of the formula ##STR2## in which R', independently of R, is what R has been defined as, A is an anion, Q is a substituted or unsubstituted alkyl radical, and p and q are integers such that the sum of p and q is 20 to 50 , and a non-ionic compound of the formula ##STR3## in which R", independently of R, is what R has been defined

Abstract: The invention relates to a process for continuous dyeing a cellulosic fibrous substrate with a direct or reactive dye comprising the steps of(a) applying to the substrate an aqueous dyeing liquor containing an alkanolamine, followed by(b) fixing the dyeings, and finally(c) after-treating the dyed substrate with a fixing agent,the resulting dyeings having improved wet fastnesses.

Abstract: The invention relates to new dioxazine reactive dyestuffs of the formula ##STR1## a process for their preparation and their use in dyeing and printing fibre materials which contain hydroxyl groups or amide groups.In formula (I):D denotes a radical of the dioxazine system of the formula ##STR2## the radicals Y, Z, A, X.sub.1 and X.sub.2 as well as m and n having the meaning indicated in the text of the application.The invention further relates to a process for the preparation of these new dioxazine reactive dyestuffs as well as their use in dyeing and printing fibre materials which contain hydroxyl groups or amide groups.

Abstract: The light fastness of polyamide dyeings can be improved by treating polyamide fibre materials, before, during or after dyeing, with copper complexes of the reaction products of salicylaldehydes with amines (for example cyclohexylamine), or with copper complexes of o-hydroxybenzophenones.

Abstract: A process is provided for dyeing textile materials in a solid shade with a jet injection dyeing apparatus, including conveying means for transporting the textile, jet orifices for delivering dye to said textile material, and control means for supplying data to control the operation of the application of dye from the jet orifices to the textile material, which comprises the steps of: modifying the textile material prior to dyeing of same by applying to said textile material an aqueous admixture containing an effective minor amount of a thickening agent to maintain the viscosity of said aqueous admixture at from about 150 to about 750 centipoises, preferably about 200 to about 400 centipoises, to thoroughly wet said textile material; dyeing said textile material in a solid shade with an acid dye composition having a viscosity of from about 150 to about 750 centipoises, preferably from about 200 to about 400 centipoises, by applying said dye composition by means of said jet injection dyeing apparatus in an amoun

Abstract: 1:2 Metal complexes of the formula ##STR1## in which each of X.sub.1 and X.sub.2, independently, is --COO-- or --O--,each of B.sub.1 and B.sub.2, independently, is a radical of a coupling component of the benzene or oxyquinoline series,M is a metal capable of forming a 1:2 complex and,each of ##STR2## independently, is the radical of a diazo component of the benzene series, with the proviso that at most one of such diazo component radicals contains a single sulpho group,and mixtures thereof with one or more of the corresponding symmetrical 1:2 metal complexes,which complexes and mixtures of complexes are in free acid or salt form and are useful as anionic dyes for dyeing and printing substrates such as natural and regenerated cellulose, natural and synthetic polyamides, polyurethanes and polymers modified to contain basic groups, especially leather.

Abstract: A propylene oxide polyadduct containing carboxyl groups, or a salt thereof, obtained from(a) an adduct of propylene oxide and an aliphatic alcohol having 3 to 10 carbon atoms which is at least trihydric,(b) an aliphatic dicarboxylic acid or the anhydride thereof having 2 to 10 carbon atoms or a mono- or di-lower alkylester of said dicarboxylic acids,(c) an aliphatic diol having an average molecular weight of at most 2,000,(d) a fatty acid having 8 to 22 carbon atoms and(e) an aromatic dicarboxylic acid or the anhydride thereof having 8 to 12 carbon atoms; it is in particular useful as dyeing assistant for the dyeing of fibrous material made of or containing wool with anionic dyes.

Abstract: Polyamide fibre materials are dyed with acid dyestuffs and/or metal complex dyestuffs in the presence of compounds of the formula ##STR1## in which R represents a C.sub.4 -C.sub.12 -alkyl, C.sub.1 -C.sub.12 -alkoxy, phenyl, cyclohexyl or C.sub.2 -C.sub.10 -hydroxyalkoxy radical,R.sub.1 represents hydrogen or a C.sub.1 -C.sub.4 -alkyl radical,n represents an integer from 1 to 10 andm represents a number from 1 to n+1,or water-soluble salts thereof.

Abstract: An acid monomethine-metal complex dyestuff of the formula ##STR1## wherein M, Z, R, A, Y, n, a and b have the meaning given in the description.The acid metal complex dyestuffs of the formula I are valuable dyestuffs which are outstandingly suitable for dyeing and printing wool, silk and especially synthetic polyamides, such as NYLON and PERLON, in very clear shades ranging from yellow to blue, and are distinguished by high tinctorial strength, good build-up capacity and affinity and very good fastness characteristics, especially fastness to light.

Abstract: Water-soluble copper, cobalt and chromium complex monoazo compounds of which the metal-free monoazo compound contains as diazo component an aminophenol or aminonaphthol compound subtituted by a fiber-reactive radical of the vinyl sulfone series, the aminophenol possibly being substituted by a lower alkyl, lower alkoxy, nitro, sulfonic acid group, or a chlorine or bromine atom and the naphthol possibly being substituted by a sulfo group, and as coupling component a 6-sulfonaphthol(8) which may be substituted by a sulfo group in the adjacent aromatic nucleus and must be substituted by the monoamide radical of succinic acid, glutaric acid or adipic acid.

Abstract: Dyeing with a dyestuff containing a metal or from a bath in the presence of one or more metallic elements, especially alkaline-earth or heavy metals, is carried out in the presence of a sequestrating agent or sequestrant. According to the invention the sequestrant is a derivative of a phosphonic acid having no effect on the physical-chemical characteristics of the dyestuff which is used and is preferably a salt of a hydroxy-lower-alkane-phosphonic acid.

Abstract: A process for dyeing wool or wool/synthetic blends with 1:1 metal complex dyes or acid metal-free wool dyes from a strongly acid aqueous bath, which comprises dyeing said material in the presence of(a) a quaternization product of a polyalkylene oxide adduct of a fatty amine containing at least 16 carbon atoms and 15 to 100 moles of alkylene oxide, and(b) a free or etherified N-methylolurea or N-methylolmelamine.