Abstract:
Dyestuffs of the formula ##STR1## IN WHICH R denotes hydrogen, alkyl, alkenyl, cycloalkyl, aralkyl, aryl, alkoxy, aralkoxy, aryloxy, alkylamino, aralkylamino, arylamino, acylamino, carboxylic acid ester, carbonamido, acyl, halogen or nitrile, R.sub.1 denotes hydrogen, alkyl or aralkyl, R.sub.2 denotes hydrogen, alkyl, alkenyl, carbonamide or nitrile, R.sub.3 denotes alkyl, alkenyl or aralkyl, R.sub.4 denotes hydrogen, alkyl, alkenyl, aralkyl, alkoxy or aralkoxy, alkylamino, aralkylamino, acylamino, carbonamido, nitrile, nitro or halogen, R.sub.5 and R.sub.6 denote hydrogen, alkyl, aralkyl or a cycloaliphatic 5-membered or 6-membered ring, or R.sub.6 together with R.sub.1 forms a hydroaromatic 6-membered ring and An.sup.(-) represents an anion, and Processes for their preparation and their use for dyeing and printing natural and synthetic materials.
Abstract:
A dye laser employing a solution of: ##STR1## wherein R and R.sub.1 independently of one another represent hydrogen, alkyl, cycloalkyl or aralkyl or can form, with R.sub.2 or R.sub.3, or with R.sub.4 or R.sub.5, a partially hydrogenated 5-membered or 6-membered heterocyclic ring, R.sub.2 - R.sub.5 independently of one another represent hydrogen, alkyl, alkoxy or halogen or can form, with R or R.sub.1, a partially hydrogenated 5-membered or 6-membered heterocyclic ring,Me represents hydrogen, a monovalent or divalent metal cation, or the ammonium, monoalkylammonium, dialkylammonium or trialkylammonium radical, and m and n denote a number between 1 and 4,And whereinThe rings, A, B and C as well as the aliphatic or aromatic radicals present in the formula can also be substituted further,In a concentration which emits laser beams, preferably of 10.sup.-2 to 10.sup.-5 mol litre.
Abstract:
Polyaminopolyarylmethanes and an aromatic monoamine unsubstituted in an ortho or a para position to the amino group are heated in water to produce diaminodiarylmethanes.
Abstract:
The new cationic triazatrimethine dyestuffs of the formula ##STR1## wherein the substituents B, Z, R.sup.2 and An.sup..crclbar. have the meaning given in the description, are suitable for dyeing and printing naturally occurring and synthetic materials.
Abstract:
Color formers of the general formula ##STR1## in which --independently of one another-- R.sup.1 and R.sup.2 are hydrogen, halogen, alkyl, aralkyl etc.,Y.sup.1 and Y.sup.2 are alkyl, aryl, cycloalkyl or aralkyl,X.sup.1 is alkyl, alkenyl, cycloalkyl, aralkyl etc.,X.sup.2 is H, alkyl, alkenyl, cycloalkyl etc.X.sup.1 with X.sup.2 with the inclusion of the nitrogen atom carrying them can form a saturated or unsaturated 5- or 6-membered heterocyclic ring, andfurther isocyclic or heterocyclic rings can be fused with the rings A, B and C, upon incorporation in recording materials based on acid developers, show a particularly advantageous migration behaviour. Deep blue, green-blue, green, violet or red shades which have excellent sublimation and light fastness are obtained.
Abstract:
Compounds of the general formula ##STR1## wherein R represents hydrogen or alkyl andA represents a radical of the formula ##STR2## wherein the rings D can carry up to 4 alkyl radicals,R.sup.1 and R.sup.2 independently of one another represent alkyl, alkenyl, cycloalkyl, aryl or aralkyl andR.sup.3 represents hydrogen, alkyl or aryl,and the said cyclic and acyclic radicals and the rings B and C may carry nonionic substituents, are used as color-forming agents.
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:
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:
Dyestuffs of the formula ##STR1## WHEREIN R.sub.1 is a straight-chain alkyl, alkenyl, or alkinyl of 3-6 carbon atoms or aralkyl; R.sub.2 is aryl; R.sub.3 is hydrogen, straight-chain alkyl of 1-6 carbon atoms, straight-chain alkenyl or alkinyl of 3-6 carbon atoms or aralkyl; An is an anion; and the cyclic and acyclic radicals can be further substituted by non-ionic substituents. These dyestuffs 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.