摘要:
Monoazo dyestuffs of the formula ##STR1## wherein R.sub.1 represents an aromatic radical, an aliphatic radical with 1-4 C atoms or a dialkylamino radical, in which the alkyl groups contain 1-C atoms, R.sub.2 represents hydrogen, halogen, alkyl with 1-C atoms, alkoxy with 1-4 C atoms or trifluoromethyl, R.sub.3 represents hydrogen, halogen, alkyl with 1-4 C atoms, alkoxy with 1-4 C atoms or trifluoromethyl and K represents the radical of a coupling component K-H of the formulae (II), (III) and (IV) ##STR2## wherein R.sub.4 represents alkyl with 1-4 C atoms or aryl,R.sub.5 represents hydrogen or unsubstituted alkyl with 1-4 C atoms,R.sub.6 represents hydrogen, nitrile, halogen, alkyl with 1-4 C atoms or alkoxy with 1-4 C atoms,R.sub.7 represents hydrogen, alkyl with 1-4 C atoms, aryl, a carboxylic acid ester group or a carboxylic acid amide group,R.sub.8 represents hydrogen, alkyl, cycloalkyl, aryl or the radical of a heterocyclic compound,R.sub.9 represents hydrogen, halogen, alkyl with 1-4 C atoms, alkoxy with 1-4 C atoms or acylamino,R.sub.10 represents hydrogen, halogen, alkyl with 1-4 C atoms, alkoxy with 1-4 C atoms or aryloxy,R.sub.11 represents hydrogen or alkyl,R.sub.12 represents hydrogen or alkyl and m represents 0 or 1,are suitable for the dyeing of synthetic fibre materials, especially those from polyamides. Level yellow, red and ruby shades are obtained with good dyeing yield and fastness.
摘要:
Dyestuffs of the formula ##STR1## wherein R.sub.1 denotes halogen, alkyl, cycloalkyl, aralkyl, nitro, cyano, acyl, acylamino, amino, aminocarbonyl, aminosulphonyl, alkylsulphonyl, arylsulphonyl, alkoxy, aryloxy, aralkoxy, carboxyl, alkoxycarbonyl, aryloxycarbonyl or aralkoxycarbonyl or arylazo,R.sub.2 denotes alkyl, alkenyl, cycloalkyl, aryl or aralkyl,R.sub.3 and R.sub.4 denote alkyl, cycloalkyl or aralkyl,R.sub.5, R.sub.6, R.sub.7 and R.sub.8 denote hydrogen, alkyl, cycloalkyl, aralkyl or aryl, andwhereinR.sub.6 and R.sub.7 can together form a fused cycloaliphatic ring,A denotes aryl or heteryl,n denotes 0, 1 or 2 andAn.sup.(-) denotes an anion,process for their preparation and their use for dyeing and printing especially polyacrylonitrile and acid modified polyamides and polyesters.
摘要:
Azo pigments are obtained by diazotizing a diazotizable aromatic amine without solubilizing groups in anhydrous dipolar aprotic water-miscible solvents with the stoichiometric amount or a small excess of nitrosylsulfuric acid or nitrosyl chloride, coupling the diazonium compound so obtained with a coupling component and isolating the pigment obtained in usual manner. This process is carried out in homogeneous solution and yields azo pigments the advantageous properties of which cannot be achieved by other methods, for example, the excellent purity, grain softness, narrow range of particle size distribution, excellent dispersibility in plastic materials and color lacquers, high gloss and excellent opacity in color lacquers.
摘要:
Azopyrazolium dyes of the formula: ##STR1## in which R.sub.1 represents an alkyl group or a phenyl group which may be substituted with a halogen atom or with a nitro, alkoxy or alkyl group, R.sub.2 represents an alkyl group; R.sub.3 represents an atom of hydrogen or halogen; R.sub.4 represents the residue of a coupler R.sub.4 H free of a sulfonic or carboxylic group; and X.sup.- represents a monovalent anion, and 3-trifluoromethyl-4-aryl-5-amino pyrazoles of the formula in which R.sub.3 and R.sub.4 have the same meanings as above and R'.sub.1 represents a hydrogen atom, an alkyl group, or a phenyl group which may be substituted with a halogen atom or with a nitro, alkoxy or alkyl group, are disclosed; methods are disclosed for making these compounds and using them for the dyeing of fibers based on polymers and copolymers of acrylonitrile or on acid-modified polyesters or polyamides to pure and brilliant shades having good fastness, especially fastness to light, e.g., for using the pyrazoles to form the dyes.AZOPYRAZOLIUM DYES, PYRAZOLE COMPOUNDS AND METHODS
摘要:
A new and very advantageous Process had been found for the preparation of azo dyestuffs by diazotation and coupling in which the synthesis is carried out without the hitherto usual addition of an acid, with the proviso that at least one of the diazo and coupling components contains at least one acid group. Besides the saving of reaction material and subsequently of alkali for neutralization of the reaction medium and isolation of the dyestuff, highly concentrated solutions of the dyestuff and salt-free or practically salt-free dyestuffs can be obtained, and waste-water is no longer charged with big amounts of salts.
摘要:
Process for dyeing or printing synthetic or artificial hydrophobic textile fibers in an aqueous medium with a 1:1 premetallized dyestuff complex of monocationic character of a transition metal, the cationic part of which dyestuff does not contain an ionized group (dyestuff (I)), in which the fibers are treated at a temperature at least equal to 80.degree. C. with a complexing agent (III), sparingly soluble in water and not containing an ionized group and more soluble in the fiber than in the aqueous dyeing medium of pH from 3 to 7, and with the premetallized dyestuff (I), the complexing agent being capable of fixation on the metal of the premetallized dyestuff with liberation of a proton, and synthetic or artificial hydrophobic textile fibers dyed or printed by such process.
摘要:
Nondiffusible p-sulfonamidophenols which are alkalicleavable upon oxidation to release a diffusible color-providing moiety from the benzene nucleus having the formula: ##SPC1##Wherein Col is a dye or dye precursor moiety, and Ballast is an organic ballasting radical which renders the compound nondiffusible in a photographic element during development with an alkaline processing composition.
IN WHICH R signifies a substituted or unsubstituted hydrocarbon radical, R1 signifies a substituted or unsubstituted phenylene or naphthylene radical, R2 signifies a substituted or unsubstituted alkyl or aryl radical, R3 signifies a hydrogen atom, a substituted or unsubstituted alkyl radical of one to six carbon atoms or a halogen atom, and RING A may be further substituted, USEFUL FOR DYEING AND PRINTING POLYAMIDE, CELLULOSIC AND BASIC DYEABLE POLYPROPYLENE FIBRES, LEATHER AND PAPER.
IN WHICH K DENOTES THE RADICAL OF A MONOFUNCTIONAL COUPLING COMPONENT; R AND R1 STAND FOR IDENTICAL OR DIFFERENT SUBSTITUENTS; X MEANS AN OPTIONALLY SUBSTITUTED CARBOXYLIC ACID HYDRAZIDE GROUP; M STANDS FOR AN INTEGER FROM 0 TO 3; AND N STANDS FOR THE NUMBERS 1 OR 2, AS WELL AS PROCESSES FOR THEIR PRODUCTION AND THEIR USE AS PIGMENT DYSTUFFS.