Abstract: J-Acid urea of the formula ##STR1## is prepared by reacting 7-amino-4-hydroxynaphthalene-2-sulfonic acid (J-acid) with urea at from 100.degree. to 140.degree. C. under a pressure ranging from atmospheric pressure to 10 bar in an inert solvent to a partial extent, precipitating unconverted J-acid in an acidic medium and separating it off, and, if desired, isolating J-acid urea from the resulting neutralized solution by salting out.

Abstract: Quinoline-4-carboxylic acids derivatives are useful as dye-forming components for pressure- and heat-sensitive recording materials and have of the general formula I ##STR1## where one of R.sup.1, R.sup.2 and R.sup.3 is hydrogen while the other two are each independently of each other hydrogen, fluorine, chlorine, bromine, linear or branched C.sub.1 -C.sub.5 -alkyl, hydroxyl, C.sub.1 -C.sub.10 -alkoxy, which may be interrupted in the alkyl by 1 or 2 oxygen atoms, or is ##STR2## R.sup.7 is hydrogen, methyl or ethyl and R.sup.8 is C.sub.1 -C.sub.4 -alkanoyl, benzoyl, p-chlorobenzoyl, C.sub.1 -C.sub.6 -alkyl, benzyl or p-chlorobenzyl, orR.sup.1 and R.sup.2 together are a fused-on benzene ring,R.sup.2 and R.sup.3 together are unsubstituted or C.sub.1 -C.sub.4 -alkyl-substituted methylenedioxy or ethylenedioxy,R.sup.4 is hydroxyl, C.sub.1 -C.sub.10 -alkoxy, which may be interrupted by 1-4 oxygen atoms, or unsubstituted or chlorine-substituted phenyl-C.sub.1 -C.sub.2 -alkoxy,R.sup.5 is hydroxyl or C.sub.1 -C.sub.

Abstract: 3-Aminophenylpentane-1,5-diones of the formula I ##STR1## where R.sup.1 and R.sup.2 are, independently of one another, hydrogen, C.sub.1 -C.sub.8 -alkyl, C.sub.4 -C.sub.8 -cycloalkyl, cyano-C.sub.2 -C.sub.4 -alkyl, hydroxy-C.sub.2 -C.sub.4 -alkyl, chloro-C.sub.2 -C.sub.4 -alkyl, phenyl-C.sub.1 -C.sub.2 -alkyl which can be substituted by chlorine, or phenyl which can be substituted by clorine or methyl, or R.sup.1 and R.sup.2 form, together with the nitrogen to which they are bonded, a heterocyclic radical which can contain further hetero atoms,R.sup.3 is hydrogen, fluorine, chlorine, C.sub.1 -C.sub.2 -alkyl or C.sub.2 -C.sub.5 -alkoxy or, if R.sup.3 is ortho to --NR.sup. R.sup.2, R.sup.3 and R.sup.2 together form C.sub.2 -C.sub.4 -alkylene, which can be substituted, or 1,2-phenylene andA is naphthyl or a radical of the formula II ##STR2## where X is hydrogen, fluorine, chlorine, bromine, C.sub.1 -C.sub.5 -alkyl, hydroxyl, C.sub.1 -C.sub.5 -alkoxy, phenoxy, phenyl-C.sub.1 -C.sub.

Abstract: Polyethyleneimine-containing azo dyes of the formula[(D-N=N-K-).sub.y X-].sub.m PwhereD is the radical of a diazo component which is derived from an isocyclic aromatic amine or from a heteroaromatic amine and is free of hydroxysulfonyl groups,K is the radical of a coupling component of the hydroxynaphthalene, aminopyridine or pyrazolone series which has at most one hydroxysulfonyl group, or is the radical of a coupling component derived from acetoacetic acid,y is 1 or 2,X is a covalent bond or a bridge member if y is 1 or a bridge member if y is 2, andP is the radical of a polyethyleneimine whose degree of polymerization n is from 5 to 25000,and the number m of chromophore radicals is dependent upon the degree of polymerization n and is defined by the ratio m:n=from 1:1 to 1:35, with the proviso that when K is substituted by hydroxysulfonyl the ratio m:n is from 1:2 to 1:35, are useful for dyeing or printing fiber materials and for preparing inks for the ink jet process.

Abstract: Novel photopolymerizable recording materials suitable in particular for producing photoresist layers and lithographic printing plates are composed of one or more photopolymerizable, olefinically unsaturated organic compounds, optionally a polymeric binder, a photopolymerization initiator, a color-forming system composed of a color former and a photooxidant, a certain 4-phenylpyridine as sensitizer and optionally further additive and/or auxiliary substances.

Abstract: Pyridine compounds of the general formula ##STR1## where one radical X is phenyl and the other radical X is phenyl which is substituted by halogen, cyano, C.sub.1 -C.sub.5 -alkyl, C.sub.1 -C.sub.5 -alkoxy or C.sub.1 -C.sub.5 -alkoxycarbonyl, or both radicals X are 4-fluorophenyl, and X.sup.1 is a radical of the formula ##STR2## where R.sup.1 and R.sup.2 independently of one another are each straight-chain or branched alkyl, cyanoalkyl, haloalkyl, aryl or aralkyl having a total of 7 to 14 carbon atoms, or ##STR3## is a 5-membered or 6-membered saturated heterocyclic radical and R.sup.3 is straight-chain or branched C.sub.1 -C.sub.4 -alkyl, are described.The compounds (I) are dye precursors for pressure-sensitive recording systems.