摘要:
A metal free azo dyestuff of the formula ##STR1## in which K is the radical of a coupling component of pyridone, andR.sub.3 and R.sub.4 each independently is hydrogen; C.sub.1 -C.sub.6 -alkyl; C.sub.1 -C.sub.6 -alkyl substituted by OH, SO.sub.3 H, COOH or OSO.sub.3 H; phenyl; naphthyl; or phenyl or naphthyl substituted by SO.sub.3 H or COOH.
摘要:
Azo dyestuffs which, in the form of the free acid, correspond to the formula ##STR1## wherein R.sub.1 denotes hydrogen, methyl or chlorine,R.sub.2 denotes hydrogen, chlorine, acetylamino, methoxy, ethoxy, nitro or carboxyl,R.sub.3 denotes hydrogen, sulpho-C.sub.1 -C.sub.2 -alkyl, carboxy-C.sub.1 -C.sub.2 -alkyl or C.sub.1 -C.sub.4 -alkyl,R.sub.4 denotes hydrogen or C.sub.1 -C.sub.4 -alkyl,R.sub.5 denotes hydrogen or acyl andR.sub.6 denotes hydrogen, methyl, methoxy, ethoxy, chlorine, carboxyl, nitro or sulpho,and their preparation and use for dyeing substrates which can be dyed with direct dyestuffs.
摘要:
Forgery-proof paper, which exhibits a distinct coloration when treated with an oxidizing agent and, if appropriate, a reducing agent, contains, as the reagent, a compound of the formula ##STR1## wherein A represents N or C,B represents NR, O or S,R represents hydrogen or alkyl,X and Y represent hydrogen or customary substituents andn and m represent the numbers 1 or 2.
摘要:
Azo dyestuffs of the formula ##SPC1##Wherein A and B are different radicals of an aromatic coupling component are described. The new dyestuffs are outstandingly suitable for dyeing and printing natural or synthetic fibre materials containing hydroxyl groups and nitrogen like wool, wool-cotton union, silk, high molecular polyamide as well as paper pulp and paper materials and leather to give dyeings havings good fastness properties.
摘要:
Azo dyestuffs of the formula ##STR1## wherein A, R.sub.1, m and n have the meaning given in the description. The dyestuffs are suitable for dyeing cellulose-containing materials, especially cotton, which may be natural or regenerated, as well as union fabrics containing cotton, and paper. The dyestuffs in general give red to violet, as well as reddish brown, color shades.The dyestuffs are distinguished by good light-fastness, substantivity and wet-fastness. Their great suitability for high temperature dyeing processes and for subsequent creaseproof finishing deserves particular mention.
摘要:
The invention relates to the preparation of storage-stable, concentrated solutions of urea compounds of the formulaF.sub.1 --HN--CO--NH--F.sub.2wherein F.sub.1 and F.sub.2 denote radicals of dyestuffs or dyestuff intermediates containing acid groups by reacting 2 equivalents of amines of the formulaF.sub.1,2 --NH.sub.2with one equivalent of a compound of the formulaCl--CO--Xwherein X is chlorine or an aryloxy radical in the presence of alkaline earth metal ions in the pH range of 4.0 to 8.0, separating off the sparingly soluble alkaline earth metal salt of the resulting urea compounds, adding -- for example -- a salt of lithium of which the anion forms a salt, which is sparingly soluble in the reaction medium, with the alkaline earth metal cation of the urea compound to the suspension of these urea compounds and separating off the alkaline earth metal salt which has precipitated.
摘要:
Mixtures of dyestuffs of the formula I ##STR1## and of the formula II ##STR2## wherein R=alkyl,R.sub.1 =H or R andR.sub.2 /R.sub.3 =R.sub.1 or alkoxy,are distinguished by being readily soluble in hard water and produce satisfactory golden yellow dyeings on polyamide fibres.
摘要翻译:其中R =烷基,R 1 = H或R和R 2 / R 3 = R 1或烷氧基的式I化合物(I)和式II的化合物(II)的染料的混合物的特征在于容易溶于 硬水,并在聚酰胺纤维上产生令人满意的金黄色染色。
摘要:
Optionally metallized azo dyestuffs which in the form of the free acid correspond to the formula ##STR1## wherein K is the radical of a benzene, naphthalene, pyrazolone, pyridone, pyrimidone, acetoacetic acid arylide or aminopyrazole coupling component;A is a non-ionic substituent;X is ##STR2## wherein W is a direct bond or a bridge member to a C atom of the benzene or naphthalene nucleus or the coupling component K;R is hydrogen or C.sub.1 -C.sub.4 -alkyl;B is a direct bond or a bridge member, especially -CO- or -SO.sub.2 -, to a C atom of Q;Q is a reactive radical;m is 0, 1 or 2;n is 0, 1 or 2;p is 0 or 1;q is 0, 1 or 2; andr is 0 or 1;and their use for the dyeing and printing of natural and regenerated cellulose fibre materials such as cotton and rayon, as well as natural and synthetic polyamide fibre materials, for example those of wool, silk, poly-.epsilon.-caprolactam or polycondensate of hexamethylene-diamine and adipic acid. The dyeings obtained, espeically those on cotton and rayon, are distinguished by good fastness properties, especially fastness to wet processing and to light.
摘要:
Polyazo dyestuffs of the formula ##STR1## wherein D denotes the radical of a diazo component andn denotes the number 1 or 2,and their use for dyeing and printing fibre materials containing amino groups or hydroxyl groups, and leather. The resulting dyeings have good properties under wet conditions and when in use.