Abstract: Dyestuffs of the formula ##STR1## wherein F stands for an organic chromophore andZ stands for radicals of the formulae ##STR2## wherein R.sub.1 -R.sub.2 denote hydrogen, alkyl, cycloalkyl, alkenyl, aryl, aralkyl or a heterocyclic structure orR.sub.2 and R.sub.3 represent an optionally substituted amino group or together form a ring orR.sub.1 with R.sub.2 and/or R.sub.3 with R.sub.4 form a ring,A.sup.(-) denotes an anion,Y denotes an anionic group,m denotes 0-2 andn denotes 1-6,and wherein the chromophore and said radicals can carry further substituents, provided that the total number of anionic substituents is smaller than the total number of quaternary and quaternizable amino groups, are used for dyeing cellulose fibres, in particular paper.

Abstract: Dyestuff laser consisting of a reservoir, with a laser dyestuff solution contained therein, and a pumped light source associated therewith, which is capable of exciting the dyestuff solution to produce an emission, characterized in that the dyestuff solution contains, in a solvent which does not interfere with the emission, a dyestuff which, in the form of the free acid, corresponds to the general formula ##STR1## wherein R.sub.1 to R.sub.4 independently of one another represent hydrogen, alkyl, trifluormethyl, alkoxy, aralkoxy, alkenyloxy, halogen or the carboxyl, cyano, alkylsulphone, aryl-sulphone, carboxamide, sulphonamide or carboxylic acid ester group,R.sub.1 and R.sub.4 can additionally denote a fused-on benzene ring,n represents a number 2 to 6 ando, p, q and r independently of one another represent 0, 1 or 2,in a concentration, preferably of 10.sup.-2 to 10.sup.-5 mol/1, which emits laser radiation.

Abstract: Cationic enamine dyestuffs of the general formula ##STR1## in which the symbols have the meaning given in the description, are used for dyeing natural and synthetic substrates and compositions which can be dyed with cationic dyestuffs, in particular paper.

Abstract: Fluorescent dyestuffs of the general formula ##STR1## wherein R and R.sup.1 independently of one another represent hydrogen, a salt-forming cation, an alkyl radical with 1 to 16 C atoms or an aryl or aralkyl radical which is optionally substituted by non-chromophoric groups,R.sup.2 to R.sup.5 independently of one another represent hydrogen, alkyl, trifluoromethyl, alkoxy, aralkoxy, alkenoxy, aryloxy, halogen or a carboxyl, cyano, alkyl sulphone, aryl sulphone, aralkyl sulphone, carboxamide, sulphonamide or carboxylic acid ester group,o, p, q and s independently of one another represent 1 or 2 andm and n independently of one another denote 0, 1 or 2, it being possible for the sum of m and n to be 2 to 4,processes for their preparation and their use as laser dyestuffs.

Abstract: Methine dyestuffs of the formula ##STR1## are prepared by subjecting a compound ##STR2## to a condensation reaction with a compoundA--CHO (VI)and with 1 to 5 equivalents of an inorganic acid in the presence of 0-30% by weight of an organic solvent and 0-15% by weight of water.

Abstract: Cationic methine dyestuffs of the formula ##STR1##

Abstract: A method of preparation of cationic dyestuffs having the formula ##STR1## wherein A, B, R, and R.sup.1 are defined in the specification carried out in the substantial absence of solvent and removing water formed in the reaction.

Abstract: Hydrazone dyestuffs of the formula ##STR1## in which R denotes optionally substituted alkyl,R.sup.1 denotes alkyl and the two radicals can form a closed ring,R.sup.2 denotes optionally substituted alkyl,R.sup.3 denotes alkyl, alkoxy or halogen,R.sup.4 denotes alkyl, halogen, alkoxy, phenoxy, benzyloxy, benzyl, carboxyl, alkyl carboxylate, carboxamide, sulphonamide, alkylsulphonyl, phenylsulphonyl, cyano, nitro, trifluoromethyl, acetyl or benzoyl,B denotes ##STR2## D denotes alkylene, phenylene or naphthylene, E denotes halogen, hydroxyl, alkoxy or ##STR3## Z and Z.sup.1 denote hydrogen or --Y--Z.sup.2, Y denotes alkylene,Z.sup.2 denotes hydrogen, hydroxyl, pyridinium, ##STR4## Z.sup.3, Z.sup.4 and Z.sup.5 denote hydrogen or optionally substituted alkyl,Z.sup.3 also denotes phenyl, benzyl or ##STR5## Y.sup.1 denotes alkylene and s denotes 1-8, orZ and Z.sup.1 as well as Z.sup.3 and Z.sup.

Abstract: Optical brighteners of the formula ##STR1## wherein B denotes a direct bond or the 1,4-phenylene radical andR.sub.1 and R.sub.2 independently of one another denote hydrogen, optionally substituted alkyl, aralkyl, cycloalkyl or aryl, or together form a fused aromatic ring,or the quaternisation products and protonation products thereof, are outstandingly suitable for the white tinting of polyester fibres or acrylic fibres. They are distinguished by a good build-up capacity and a small tendency to develop a green tone.

Abstract: To prepare trimethine dyestuffs of the general formula ##STR1## wherein R represents a C.sub.1 - to C.sub.4 -alkyl radical,R.sup.1 represents hydrogen, C.sub.1 - to C.sub.4 -alkyl, benzyl, cyclohexyl, C.sub.1 - to C.sub.4 -alkoxy, benzyloxy, phenoxy, halogen, trifluoromethyl, acetylamino, carboxylic acid C.sub.1 - to C.sub.4 -alkyl esters, carbonamide which may be substituted by C.sub.1 - to C.sub.4 -alkyl and/or phenyl, C.sub.1 - to C.sub.4 -alkylsulphonyl, phenylsulphonyl, cyano, nitro, benzoxazol-2-yl, benzimidazol-2-yl, benzthiazol-2-yl and sulphonamide which may be monosubstituted or disubstituted by C.sub.1 - to C.sub.4 -alkyl, or two radicals R.sup.1 represent a fused benzene ring,n denotes 1 to 4 andA.sup.- denotes an anionic radical, first an alkali metal salt of formic acid is reacted with a mixture of acetic acid and acetic anhydride and the product is then reacted with indoline compounds of the general formula ##STR2## in which R, R.sup.1 and n have the abovementioned meaning.

Abstract: To prepare concentrated solutions of cationic polyazo dyestuffs of the formula ##STR1## in which R represents hydrogen or methyl andR.sup.1 represents an alkyl radical which has 1 to 3 carbon atoms and is optionally substituted by hydroxyl, alkoxy or halogen,and mixing coupling products thereof with aromatic monoamines, diaminobenzenes of the general formula ##STR2## in which R has the abovementioned meaning,if appropriate mixed with up to 30 mol % of aromatic monoamines of the formula ##STR3## in which R.sup.2 represents hydrogen, C.sub.1 - to C.sub.4 -alkyl, C.sub.1 - toC.sub.4 -alkoxy or C.sub.1 - to C.sub.4 -acylamino andn denotes a number from 1 to 3,are dissolved in aliphatic carboxylic acids which have 2 to 4 carbon atoms and can optionally be substituted by halogen, hydroxyl or alkoxy, and are reacted with 0.5 to 0.75 mol of a salt or ester of nitrous acid per mol of diamine at 0.degree. to 30.degree. C.

Abstract: To prepare dyestuffs of the general formula ##STR1## or color bases of the general formula ##STR2## wherein R.sup.1 and R.sup.2 denote hydrogen, alkyl, alkenyl or aralkyl,R.sup.3 and R.sup.4 denote methyl or ethyl andX denotes an anion,and wherein the rings A and B and the radicals R.sup.1 and R.sup.2 can carry non-ionic substituents and the rings A and B can carry further fused-on rings, an amine of the formula ##STR3## wherein B has the abovementioned meaning, and a compound of the formula ##STR4## wherein R.sup.1, R.sup.3, R.sup.4 and A have the abovementioned meanings andR.sup.5 and R.sup.6 represent hydrogen, alkyl, alkoxy, phenoxy or phenyl,are reacted, in the presence of an acid, with a substance which releases nitrous acid and, if appropriate, the product is then reacted with a compound which forms the radicals R.sup.1' and/or R.sup.2', which represent alkyl, alkenyl or aralkyl which are optionally substituted by non-ionic radicals, and X.

Abstract: To prepare dyestuffs of the general formula ##STR1## in which R.sup.1 and R.sup.2 represent methyl or ethyl,n represents 0 or 1,B represents the divalent radical of a 5-membered or 6-membered heterocyclic ring system andX.sup.- represents an anion,and whereinthe ring a can be substituted by C.sub.1 - to C.sub.4 -alkyl radicals, C.sub.1 - to C.sub.4 -alkoxy radicals or halogen,compounds of the formula ##STR2## wherein R.sup.1, B and n have the meaning indicated above,m represents 0 or 1 andthe ring a can be substituted by C.sub.1 - to C.sub.4 -alkyl, C.sub.1 - to C.sub.4 -alkoxy or halogen,or of the formula ##STR3## in which B and R.sup.1 have the abovementioned meaning and the ring a can be substituted by C.sub.1 - to C.sub.4 -alkyl, C.sub.1 - to C.sub.4 -alkoxy or halogen,are reacted with arylsulphonic acid esters of the formula ##STR4## wherein R represents hydrogen, C.sub.1 - to C.sub.4 -alkyl or halogen andR.sup.

Abstract: Fluorescent dyestuffs of the general formula ##STR1## wherein R and R.sup.1 independently of one another represent hydrogen, a salt-forming cation, an alkyl radical with 1 to 16 C atoms or an aryl or aralkyl radical which is optionally substituted by non-chromophoric groups,R.sup.2 to R.sup.5 independently of one another represent hydrogen, alkyl, trifluoromethyl, alkoxy, aralkoxy, alkenoxy, aryloxy, halogen or a carboxyl, cyano, alkyl sulphone, aryl sulphone, aralkyl sulphone, carboxamide, sulphonamide or carboxylic acid ester group,o, p, q and s independently of one another represent 1 or 2 andm and n independently of one another denote 0, 1 or 2, it being possible for the sum of m and n to be 2 to 4,processes for their preparation and their use as laser dyestuffs.

Abstract: Coumarin compounds of the formula ##STR1## in which the substituents have the meanings given inthe description,are valuable whiteners for natural fibre materials, such as wool, or synthetic polycondensates. They can also be used as scintillators and laser dyestuffs.

Abstract: Fluorescent dyestuffs of the formula ##STR1## wherein: R.sub.1 and R.sub.2 independently of one another represent hydrogen, a salt-forming cation, an alkyl radical with 1 to 8 carbon atoms or an aralkyl radical which is optionally substituted by non-chromophoric groups,R.sub.2 to R.sub.5 independently of one another represent hydrogen, alkyl, trifluoromethyl, alkoxy, aralkoxy, alkenyloxy, halogen or the carboxyl, cyano, alkylsulphonyl, arylsulphonyl, carboxamide or sulphonamide group or a carboxylic acid ester group, m and n independently of one another denote 0, 1 or 2 and the sum of m+n must be at least 2, and o, p, q and r independently of one another represent 0, 1 or 2.processes for their preparation, their use for whitening organic materials and a process for the production of a coherent laser emission using the fluorescent dyestuffs according to formula I.

Abstract: The preparation of hydrazone dyestuffs of the formula ##STR1## wherein R.sup.13 and R.sup.14 independently of one another represent hydrogen, C.sub.1 -- to C.sub.4 --alkyl, C.sub.1-- to C.sub.4-- alkoxy or halogen, in particular chlorine or bromine, andA.sup.- denotes an anionic radical,by reacting azo bases of the general formula ##STR2## wherein R.sup.13 and R.sup.14 have the above mentioned meaning andR.sup.15 represents hydrogen or the methyl group, with dimethyl sulphate in a mixture of water and an organic solvent and in the presence of an acid-binding agent, is characterized in that (a) aromatic or aliphatic chlorinated hydrocarbons are used as the organic solvents, (b) the reaction is carried out at a temperature of 10.degree.-60.degree. C., (c) a 5-90% excess of dimethyl sulphate is employed and (d) the reaction is allowed to proceed at a pH of 5-10.

Abstract: Laser light in the wavelength range of 400 - 480 Nm is obtained with a dyestuff laser containing a dyestuff of the general formula ##STR1## wherein E denotes one of the radicals ##STR2## R.sub.1 -R.sub.4 independently of one another denote hydrogen, alkyl, trifluoromethyl, alkoxy, aralkoxy, halogen, alkenyloxy, the carboxyl, cyano, alkylsulphone, arylsulphone, carboxamide or sulphonamide group or the carboxylic acid ester group, or R.sub.1 and R.sub.2, or R.sub.3 and R.sub.4, conjointly represent a fused benzene ring and m and n independently of one another denote 0, 1 or 2, with the proviso that the radical E contains at least one sulphonic acid group if m and n represent 0,and whereinthe radical E can be further substituted, in a solvent which does not interfere with the emission, at a concentration, which emits laser beams, of, preferably, 10.sup.-2 to 10.sup.-5 mols/liter.

Abstract: Laser light in the wavelength range of 420-480 nm is obtained with a dyestuff laser containing a dyestuff of the general formula ##STR1## wherein R and R.sub.1 independently of one another represent ##STR2## R.sub.2 denotes an optionally substituted alkyl radical with 1-4 C atoms, R.sub.3 and R.sub.4 independently of one another represent hydrogen or optionally substituted C.sub.1 -C.sub.4 -alkyl or conjointly with the nitrogen can form a 5-membered or 6-membered heterocyclic ring andm and n denote 1 or 2, andwhereinthe aromatic radicals contained in the formula can be further substituted, in a solvent which does not interfere with the emission, at a concentration, which emits laser beams, of, preferably, 10.sup.-2 to 10.sup.-5 mols/liter.

Abstract: Reactive dyestuffs which in form of the free acid correspond to the following formula ##STR1## wherein R.sub.1, R.sub.2, W.sub.1, Y, Z, Q, as well as A, B and C have the meaning given in claim 1, and their use for the dyeing and printing of fibre material made of polyamide, for example natural and, in particular, synthetic polyamides, and natural and regenerated cellulose in red and bluish-tinged red fluorescent color.