Basf Aktiengesellschaft

Badische Anilin- & Soda-fabrik Aktiengesellschaft

Hellmut Kast

Guenter Hansen

Ernst Schefczik

Johannes P Dix

Rudolf Bermes

Guenter Dunkelmann

Armin Haag

Peter Krotzsch

Martin Fischer

Thomas Gessner

Klaus Grychtol

Guenter Heil

Werner Kuesters

Rainer Tresch

Franz Feichtmayr

Manfred Eisert

Described is a triarylmethane dye of the formula I where Rand Rare independently methyl, ethyl or hydroxyethyl, Q is substituted or unsubstituited phenyl or naphthyl and Ais the equivalent of an anion. It does not detach carcinogenic Michler's ketone.

Triarylmethane dyes

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.

Preparation of amine salts of 4-nitrotoluene-2-sulfonic acid

Tetrachloroferrates of basic dyes

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.

Preparation of concentrated solutions of cationic dyes as

Compounds of the general formula I ##STR1## where B is a bridge member,

Triphenylmethane dyes

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.

Basic dyes

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.

Photopolymerizable binders containing diaminobenzophenones

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. On papers coated with acid receptive layers, copies which instantly exhibit their full depth of color are obtained.

Diazarhodamine-lactones, their manufacture and their use as dye

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.

Manufacture of basic dyes by catalytic oxidation

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.

Lactones of the benzazaxanthene series and dye-forming components for

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.

Lactones of the benzaxanthere series and dye-forming components for use

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.

Growing community of inventors

Bobenheim-Roxheim, Germany

Hellmut Kast