Abstract: Described is a triarylmethane dye of the formula I where R1 and R2 are independently methyl, ethyl or hydroxyethyl, Q is substituted or unsubstituited phenyl or naphthyl and A? is the equivalent of an anion. It does not detach carcinogenic Michler's ketone.

Abstract: Described is a triarylmethane dye of the formula I where R1 and R2 are independently methyl, ethyl or hydroxyethyl, Q is substituted or unsubstituited phenyl or naphthyl and A⊖ is the equivalent of an anion. It does not detach carcinogenic Michler's ketone.

Abstract: A process for preparing amine salts of 4-nitrotoluene-2-sulfonic acid by sulfonation of nitrotoluene with oleum, subsequent dilution of the reaction mixture with water and extraction with lipophilic amines, wherein the acidic aqueous solution of the sulfonation product is partially neutralized with mineral bases. The compounds prepared according to the invention are particularly suitable for preparing dyes.

Abstract: A process for preparing amine salts of 4-nitrotoluene-2-sulfonic acid by sulfonation of nitrotoluene with oleum, subsequent dilution of the reaction mixture with water and extraction with lipophilic amines, wherein the acidic aqueous solution of the sulfonation product is partially neutralized with mineral bases.The compounds prepared according to the invention are particularly suitable for preparing dyes.

Abstract: Basic dyes of the formulaChr.sup..sym.[FeCl.sub.4 ].sup..crclbar.where Chr.sup.a is a dye cation are useful for dyeing acrylonitrile polymers or acid-modified polyesters.

Abstract: Concentrated solutions of cationic dyes are prepared by treating the cationic dyes, which contain as the counterions the anions customarily present during their preparation, with alkali metal salts of monocarboxylic acids and with or without complexing agents in an aqueous glycol ether medium, and separating off the organic phase, which contains the dyes in the form of their monocarboxylic acid salts.

Abstract: Compounds of the general formula I ##STR1## where B is a bridge member,the radicals R independently of one another are hydrogen or substituted or unsubstituted alkyl, or two radicals R together with the nitrogen are a heterocyclic saturated 5-membered or 6-membered ring,the radicals R.sup.1 independently of one another are hydrogen or C.sub.1 -C.sub.4 -alkyl,the radicals R.sup.2 independently of one another are hydrogen, C.sub.1 -C.sub.4 -alkyl or halogen,the radicals R.sup.3 independently of one another are hydrogen or substituted or unsubstituted alkyl or together are an alkylene group, and X.crclbar. is an anion. The compounds of the formula I are particularly suitable for dyeing paper.

Abstract: Dyes of the general formula I ##STR1## where A.sup..crclbar. is an anion, B is methyl, ethyl, benzyl or .beta.-hydroxyethyl, n is 1 or 2, R is alkyl of 1 to 4 carbon atoms, X is hydrogen, methoxy, ethoxy or chlorine and Z is ##STR2## The dyes of the formula I give very fast dyeings on anionically modified fibers.

Abstract: Photopolymerizable binders for printing inks, coatings and printing plates, based on olefinically unsaturated compounds, with or without a polymeric binder component, and containing a diaminobenzophenone compound as the photosensitizer, are improved in respect of their toxicity and shelf life if the diaminobenzophenone compound has the formula R.sup.1 R.sup.2 N--C.sub.6 H.sub.4 --CO--C.sub.6 H.sub.4 --NR.sup.3 R.sup.4, where R.sup.1 and R.sup.3 are H(OR.sup.5).sub.x radicals, R.sup.5 being alkylene of 2 or 3 carbon atoms and x being 1, 2 or 3, and R.sup.2 and R.sup.4 are each alkyl of 1 to 4 carbon atoms or are radicals of the type of R.sup.1 and R.sup.3.

Abstract: New diazarhodamine-lactones of the formula ##STR1## where R.sup.1 is hydrogen or alkyl of 1 to 4 carbon atoms, R.sup.2 is alkyl of 1 to 4 carbon atoms, unsubstituted phenyl or phenyl substituted by one or two alkyls of 1 to 3 carbon atoms, chlorine and/or bromine, R.sup.3 and R.sup.4 independently of one another are hydrogen, alkyl of 1 to 7 carbon atoms, cycloalkyl of 5 to 7 carbon atoms, phenylalkyl of 7 to 10 carbon atoms or alkoxyalkyl of a total of 3 to 8 carbon atoms, or the group ##STR2## is a 5-membered, 6-membered or 7-membered saturated heterocyclic ring or a 6-membered saturated heterocyclic ring which additionally contains an --O--, --S-- or --N--group, wherein R.sup.6 is hydrogen, methyl or ethyl and R.sup.5 is unsubstituted phenyl or phenyl substituted by alkyl of 1 to 3 carbon atoms, methoxy, chlorine or bromine.The lactones (I) exhibit improved stability and therefore do not stain coated paper.

Abstract: A catalytic process for the oxidation of compounds of the formula ##STR1## where Z to Z.sup.6 are hydrogen or substituents, in which iron tetraazaannulenes are used as catalysts. The process gives good yields when using oxygen for oxidation.

Abstract: New lactones of the benzazaxanthene series, their production from benzoylbenzoic acids and homophthalimides and their use as dye-forming components in the red range for pressure-sensitive recording materials.

Abstract: Lactones of the benzazaxanthene series based on 4-dialkylaminobenzoic acid compounds and homophthalic acid imides. The new lactones are eminently suitable as dye-forming components in the red range for pressure-sensitive recording material.

Abstract: Lactones of the diazaxanthene series, their manufacture from a benzoylbenzoic acid and a pyrimidine, and their use as dye-forming components in the red range for pressure-sensitive recording material.