摘要:
Dry toners for developing latent electrostatic images in electrostatic recording and printing methods contain, as charge-control substance, a pigment of the formulaF.sup.+ A.sup.- (I)in whichF represent a cationic radical of a methine dyestuff andA.sup.- represents an anion of a heteropolyacid based on tungsten and/or molybdenum with phosphorus, silicon, vanadium, cobalt, aluminum, manganese, chromium and/or nickel or a copper(I) hexacyanoferrate anion.
摘要:
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.
摘要:
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.4 form a closed ring,G denotes alkylene, phenylene orG denotes alkylene, phenylene or ##STR6## m and n denote 0, 1 or 2 and X.sup.(-) denotes an anion,are used in particular for dyeing paper.
摘要:
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.
摘要:
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.
摘要:
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.
摘要翻译:具有式(I)的荧光染料其中:R 1和R 2彼此独立地表示氢,形成盐的阳离子,具有1至8个碳原子的烷基或任选被非发色团取代的芳烷基 R 2至R 5彼此独立地表示氢,烷基,三氟甲基,烷氧基,芳烷氧基,烯氧基,卤素或羧基,氰基,烷基磺酰基,芳基磺酰基,甲酰胺或磺酰胺基或羧酸酯基,m和n独立地为一个 另一个表示0,1或2,m + n的和必须至少为2,o,p,q和r彼此独立地表示0,1或2。
摘要:
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.
摘要:
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.
摘要:
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.
摘要:
Polyaminopolyarylmethanes and an aromatic monoamine unsubstituted in an ortho or a para position to the amino group are heated in water to produce diaminodiarylmethanes.