Abstract: Dyestuffs of the formula ##STR1## wherein R represents hydrogen or optionally substituted alkyl,A represents ##STR2## wherein R.sup.1 represents hydrogen, optionally substituted alkyl or cycloalkyl andR.sup.2 represents optionally substituted alkyl which can close a ring to ring B, aralkyl or aryl orR.sup.1 and R.sup.2, together with the N atom, form a ring,D and E represent hydrogen, optionally substituted alkyl or alkenyl and D additionally represents aryl, aralkyl, aralkenyl or a heterocyclic radical, or D and E, together with the C atom, form a ring andAn.sup.- represents an anion,are used for pulp-coloring paper and dyeing cationically dyeable fibres.

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

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: 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: 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: In the preparation of a quaternized dyestuff of the formula ##STR1## in which R.sup.1 and R.sup.2 each is an optionally substituted alkyl, alkenyl or aralkyl radical,R.sup.3 is hydrogen, or an optionally substituted alkyl, aralkyl, cycloalkyl or aryl radical,K is the radical of a coupling component+HK, and X is an anion,wherein an aminotriazole of the formula ##STR2## is diazotized and coupled to a coupling component HK to form an intermediate dyestuff of the formula ##STR3## and the intermediate dyestuff is quaternized with an alkylating or aralkylating agent capable of providing the radicals R.sup.1 and R.sup.2 in a medium also providing the anion X.sup.-, the improvement which comprises effecting the coupling at a pH of 4 to 6 and thereafter, without isolation of the intermediate dyestuff, effecting the quaternization.

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: Cationic dyestuffs of the formula ##STR1## wherein R.sub.1 and R.sub.2 independently of one another represent a lower alkyl, alkenyl or hydroxyalkyl radical,R.sub.3 represents H or halogen,R.sub.4 represents H, halogen, or a lower alkyl, alkenyl or alkoxy radical,R.sub.5 represents H or a lower alkyl radical,R.sub.6 represents a lower alkyl, alkenyl, halogenoalkyl, alkoxyalkyl, hydroxyalkyl or cyanoalkyl radical andX.sup.- represents an anion,at least one of the substituents R.sub.3 and R.sub.4 being other than H, are used for dyeing and printing natural and synthetic materials, in particular polyacrylonitrile.

Abstract: Process for the preparation of benzthiazole dyestuffs by alkylation of compounds of the formula ##STR1## wherein R.sub.1 and R.sub.2 denote hydrogen, alkyl, alkenyl, cycloalkyl, aryl or aralkyl, or, conjointly with the N-atom, form a ring, or R.sub.1 can be linked to the o-position of the ring B and the rings A and B and the radicals R.sub.1 and R.sub.2 can contain non-ionic substituents and carbocyclic or heterocyclic rings can be fused to the rings A and B, with esters of the formulaR.sub.3 --SO.sub.3 RwhereinR denotes an alkyl radical andR.sub.3 denotes an aryl radical or R--O,in organic solvents and consequently alkylation by the addition of water.

Abstract: Basic dyestuffs of the formula ##STR1## Wherein R.sub.2 denotes a non-ionic substituent,R.sub.3, R.sub.4 denote alkyl, alkenyl, cycloalkyl or aralkyl,R.sub.5 denotes hydrogen, alkyl, cycloalkyl or aryl,R.sub.6 denotes hydrogen or alkyl, and R.sub.5 and R.sub.6 can together complete a cycloalkyl ring,R.sub.7 denotes hydrogen or alkyl, and R.sub.6 and R.sub.7 can together complete a cycloalkyl ring,R.sub.8 denotes a non-ionic substituent or a carboxyl group,p denotes the numbers 0, 1, 2, 3 or 4,n denotes the numbers 0, 1, 2 or 3 andX.sup.- denotes an anion,are suitable for dyeing and printing of natural and synthetic materials, particularly of polyacrylonitrile, copolymers of acrylonitrile with other vinyl compounds of acid modified polyesters and acid modified polyamides.

Abstract: A pressure-sensitive and heat-sensitive recording material contains color-forming agents of the formula ##STR1## wherein R.sub.1 denotes hydrogen or a non-ionic radical which is free from amino groups,R.sub.2 denotes hydroxyl, alkylamino, dialkylamino, acylamino, aralkylamino, arylamino, a saturated heterocyclic radical, alkoxy, alkenyloxy, aralkoxy, cycloalkoxy, aryloxy, acyloxy or a direct bond to R.sub.4,R.sub.3 denotes hydroxyl, alkoxy, aralkoxy, alkenyloxy, cycloalkoxy, aryloxy, alkylthio, arylthio or a radical of the formula ##STR2## wherein R.sub.5 and R.sub.6 independently of one another denote hydrogen, alkyl, aralkyl, cyloalkyl or aryl or, together with the nitrogen atom, form a ring, or R.sub.5 forms a ring with the ring B in the o-position relative to the nitrogen atom, andR.sub.4 denotes an aryl radical which is free from amino groups or a heterocyclic radical.

Abstract: Acid-modified fibre materials may be dyed in brilliant color shades in accordance with the transfer printing principle if dyestuffs of the formula ##STR1## are used in which A is a residue of the formula ##STR2## wherein R.sub.1, R.sub.3, R.sub.4, R.sub.6 -R.sub.9 are H or lower alkyl, R and R.sub.2 are lower alkyl and R.sub.5 is phenyl.The resulting transfer prints are distinguished by good fastness to light, wet processing and rubbing.

Abstract: Cationic dyestuffs of the formula ##STR1## in which R represents hydrogen, an alkyl, alkenyl, cycloalkyl or aralkyl radical,R.sub.1 represents hydrogen or an alkyl, alkenyl, cycloalkyl or aralkyl radical, with the proviso that at least one of the radicals R and R.sub.1 represents a C.sub.2 -C.sub.4 -hydroxyalkyl group and An.sup.(-) represents an anion,and in which the cyclic and acyclic radicals can contain nonionic substituents, their preparation and their use for dyeing polyacrylonitrile, acid modified polyesters and acid modified polyamides.

Abstract: Triaryl-methane dyestuffs which are free from sulfonic acid and carboxylic acid groups and are selected from the group consisting of dyestuffs having one of the following four formulae: ##STR1## wherein R is alkyl, aralkyl, cycloalkyl or aryl; R.sub.1 is hydrogen, alkyl, aralkyl or cycloalkyl; R.sub.2 is alkyl, aralkyl, cycloalkyl or aryl; R.sub.1 and R.sub.2 additionally including divalent alkylene when joined together with the nitrogen or with a carbon atom in the o-position in the ring A to form a heterocyclic ring; R.sub.3 is hydrogen, alkyl, aralkyl, aryl, aralkoxy, aryloxy, halogen, carboxylic acid ester radical, carbonamido, sulfonamido, cyano, nitro, alkylsulfonyl, aryalkylsulfonyl, arylsulfonyl or acyl; and X is the radical of an anion; ##STR2## wherein R is alkyl or cycloalkyl; R.sub.1 is hydrogen, alkyl, aralkyl, cycloalkyl or aryl; R.sub.2 is alkyl, cycloalkyl, aralkyl or aryl, halogen or cyano; R.sub.1 and R.sub.

Abstract: Cationic dyestuffs of the formula ##STR1## wherein R represents alkyl, alkenyl, cycloalkyl or aralkyl,R.sub.1 represents hydrogen, alkyl, alkenyl, cycloalkyl or aralkyl,R.sub.2 represents alkylene,Y represents oxygen or sulphur,R.sub.3 represents a direct bond or -CO-,A represents a carbocyclic six-membered ring or a heterocyclic ring,X.sup.- represents an anion andm represents the numbers 0 or 1,With the proviso that m can only be 1 if R.sub.3 denotes an alkylene group, are suitable for dyeing and printing of natural and synthetic materials.

Abstract: Cationic azodyestuffs of the formula ##STR1## in which the substituents have the meaning stated below, are suitable for dyeing and printing of natural and synthetic materials especially polyacrylonitrile and acid modified polyesters and polyamides.They are also suitable for dyeing and printing of cellulose acetate, coir, jute, sisal, silk tannin-treated cotton, paper, ball-pen pastes, rubber stamps inks, and for use in flexographic printing.

Abstract: Exhaustion process for dyeing automatically modified fibre materials with cationic dyestuffs from halogenated hydrocarbons, wherein are used cationic dyestuffs of the formula[F - (R).sub.z ]+A-in which F, R, z and A- have the meaning given below in the disclosure; by the claimed process an essentially improved exhaustion of the dyebaths is achieved.

Abstract: Cationic dyestuffs of the formula ##STR1## in which R, R' and R" denote alkyl, alkenyl, cycloalkyl or aralkyl andR.sub.1 denotes hydrogen, alkyl, alkenyl, cycloalkyl or aralkyl orR.sub.1 can form a five-membered or six-membered heterocyclic ring with the ring B,R.sub.2 denotes an alkylene group of which the chain can be interrupted by 0,Y denotes a --CO-- or --O--CO--O-- group,A denotes an aromatic ring andX.sup.- denotes an anion, andn, n' and n" independently of one another are 0 or 1, with the proviso that the sum n + n' + n" is 2,Are suitable for dyeing and printing of natural and synthetic materials with good fastness properties with respect to light, wet processing, rubbing, decatizing, sublimation and perspiration.

Abstract: Dyestuffs of the formula ##STR1## wherein R represents alkyl, alkenyl, cycloalkyl or aralkyl,R.sub.1 represents hydrogen, alkyl, alkenyl, cycloalkyl or aralkylR.sub.2 represents alkylene, of which the chain can be interrupted by O,Y represents -CO- or -O-CO-O-,A represents an aromatic ring andX.sup.- represents an anion,Are suitable for dyeing and printing of polyacrylonitrile and acid modified polyesters and polyamides.

Abstract: Cationic dyestuffs of the formula ##STR1## IN WHICH R represents alkyl, alkenyl, alkinyl, cycloalkyl, aralkyl or aryl,R.sub.1 represents hydrogen or an alkyl, alkenyl, alkinyl, cycloalkyl or aralkyl radical andAn.sup.- represents an anion, processes for their preparation and their use for dyeing, printing and bulk dyeing of natural and synthetic materials.