Abstract: A colorant mixture for use in printing inks contains a pigment of formula I ##STR1## a basic dye of the formula II ##STR2## where the substituents are as defined in the specification L-A. and exhibits higher color strength than that of the pigment of formula I alone.

Abstract: Dihydroquinacridones, quinacridones and quinacridonequinones are prepared by cyclizing 2,5-dianilino-3,6-dihydroterephthalic acid derivatives or 2,5-dianilinoterephthalic acid derivatives in the liquid or solid state or in solution, in each case in finely divided form, or in the gas phase, in the presence or absence of an oxidizing agent.

Abstract: Sulfo-free compounds of the formula ##STR1## where R is hydrogen or C.sub.1 -C.sub.4 -alkyl andK.sup.1 and K.sup.2 independently of one another are a radical of a coupling component, and the rings A and B may furthermore be monosubstituted or polysubstituted by fluorine, chlorine, bromine, nitro, methyl, trifluoromethyl, ethyl, acetyl, benzoyl, a carboxylic ester group, unsubstituted or substituted carbamyl or sulfamyl, an aryl sulfonate group, C.sub.1 -C.sub.4 -alkylsulfonyl, unsubstituted or substituted phenylsulfonyl, cyano or acylamino or a fused ring, are very useful as pigments for coloring printing inks, surface coatings or plastics.

Abstract: The compounds of the formula ##STR1## where Y is hydrogen, chlorine, bromine or nitro, Z is hydrogen, chlorine, bromine, a sulfonic ester group or unsubstituted or substituted sulfamyl, X is --O-- or ##STR2## R is alkylene which may or may not be interrupted by oxygen or ##STR3## m is 0 or 1, p is 1 or 2, R.sup.1 and R.sup.2 independently of one another are each hydrogen, unsubstituted or substituted alkyl, alkenyl, cycloalkyl, aralkyl, or aryl, or R.sup.1 and R.sup.2 together with the nitrogen form a heterocyclic structure, R.sup.3 is hydrogen or unsubstituted or substituted alkyl, R.sup.6 and R.sup.7 independently of one another are each hydrogen, unsubstituted or substituted alkyl, alkoxy or acylamino, K is a radical of a coupling component, A.crclbar. is an anion, R.sup.4 is unsubtituted or substituted alkyl and R.sup.5 is hydrogen or C.sub.1 -C.sub.

Abstract: Compounds of the formula ##STR1## where Y is chlorine or bromine, Z is hydrogen, chlorine, bromine, a sulfonic ester group, nitro or unsubstituted or substituted sulfamyl, X is --O-- or ##STR2## R is alkylene which may or may not be interrupted by oxygen, ##STR3## m is 1 or 2, n is 0 or 1, p is 0, 1 or 2, q is 1 or 2, R.sup.1 and R.sup.2 independently of one another are each hydrogen, unsubstituted or substituted alkyl, alkenyl, cycloalkyl, aralkyl or aryl, or R.sup.1 and R.sup.2, together with the nitrogen atom, form a heterocyclic structure, R.sup.3 is hydrogen or unsubstituted or substituted alkyl, B is hydrogen or C.sub.1 -C.sub.4 -alkyl, B.sup.1 is hydrogen, hydroxyl, C.sub.1 -C.sub.4 -alkoxy or C.sub.1 -C.sub.4 -alkyl, A.sup.- is an anion, R.sup.4 is unsubstituted or substituted alkyl, R.sub.5 is hydrogen or C.sub.1 -C.sub.

Abstract: Naphtholazo benzoylalkylene amines and salts thereof which are useful as dyes for acid-modified fibers, leather and paper, and which are represented by the formula ##STR1## wherein n is 0 or 1,A is an anion,R is C.sub.2 - to C.sub.4 -alkyleneR.sup.1 and R.sup.2 independently of one another are C.sub.1 - to C.sub.4 -alkyl, methoxyethyl, cyclohexyl, and R.sup.1 and R.sup.2 together are ##STR2## and R.sup.3 is methyl, ethyl or hydroxyethyl.

Abstract: A compound useful for dyeing acid-modified fibers, having the formula ##STR1## where R.sup.5 is hydrogen, methyl or ethyl; R.sup.2 and R.sup.3 are each methyl, ethyl, .beta.-hydroxyethyl, .beta.-hydroxypropyl or benzyl; A.sup.- is an anion; m is 2 or 3 and n is 0.1 to 1 based on statistical averages.