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6514917 Molecular tags for organic solvent systems  
Colorless markers for petroleum products and methods and composition for detecting them.
5737871 Method of preparing and utilizing petroleum fuel markers  
Compounds known as "solid dispersed dyes" are synthesized in a two-phase system from which they disproportionate into a water-immiscible solvent phase, providing marker solutions. Marker solution...
5663308 Organosilicon polymers, and dyes, exhibiting nonlinear optical response  
Organosilicon polymers, including crosslinked polymers and crosslinkable prepolymers, of cyclic polysiloxane, organic dyes, and, optionally, polyenes. The dyes include those with delocalized Pi...
5644039 Mixtures of blue disperse azo dyestuffs  
Mixtures of dyestuffs of the formulae (I) and (II) ##STR1## which are outstanding substitute products for the anthraquinone dyestuff Disperse Blue 56, have been found.
5599913 Chromoionophores, optical sensors containing them and a method for determining the presence of alkali metal cations or of a base  
New chromoionophores of the formula IV ##STR1## wherein a=0-3, b=0 or 1, c =0 or 1, x=0 or 1, y=0 or 1, z=0 or 1, R', which may be the same or different in each aryl group, is H, halogen,...
5552531 Process for preparing substituted aromatic azo compounds  
A process for preparing substituted aromatic azo compounds is provided which comprises contacting a nucleophilic compound and an azo containing compound in the presence of a suitable solvent...
5550218 Azo compounds having unsubstituted or substituted 2-phenoxycarbonylethyl groups  
Compounds of the formula ##STR1## wherein A is C 1 -6 alkylene, D is a diazo component radical of the triazolyl, pyrazolyl, cyano(C 1 -4 alkyl)-imidazolyl, 4-chlorothiazolyl, 4-chlorotheinyl-2,...
5510225 Thermal dye sublimation transfer donor element  
Dye-donor element for use according to thermal dye sublimation transfer comprising a support having thereon a dye layer containing a bis(N,N-dialkyl(ene) or N,N-diaryl or...
5428137 Monoazo liquid dye and solutions thereof  
The monoazo compound represented by formula I is excellent in compatibility with, solubility in, and coloring power for, almost all water-immiscible organic liquids, has a low melting point, and is...
5304222 Monoazo benzothiazole disperse dye mixture  
A disperse dye mixture comprising from 20 to 80% by weight of a red disperse dye of the following formula (A) and from 20 to 80% by weight of a red disperse dye of the following formula (B):...
5247071 Preparation of acetalized azo dyes  
Acetalized azo dyes are prepared by diazotizing an amine, coupling with a hydroxyalkyl-containing coupling component and subsequently reacting with a vinyl ether in a process which comprises...
5216140 Monoazo dye and preparation and use thereof  
The monoazo dye of the formula ##STR1## is highly suitable for dyeing and printing hydrophobic fibres.
5098474 Dyes containing alkylamino groups for ink-jet printing inks  
A dye used in ink compositions for ink-jet printing comprises an aromatic dye molecule having attached to the aromatic nucleus thereof from 2 to 10 alkylamino groups having the formula selected...
5075429 Monoazo-disperse dye compounds their production and their use  
A monoazo compound of the formula, ##STR1## wherein D is a heterocyclic or carbocyclic compound residue such as benzothiazolyl and phenyl, X is hydrogen, alkyl, alkoxy, halogeno, acylamino or the...
5068318 Diamenodinitroazo dyes  
The invention relates to compounds of formula I ##STR1## wherein R 1 is C 12 -C 30 alkyl, R 2 is hydrogen or C 1 -C 30 alkyl, R 3 is C 1 -C 3 -alkyl or C 1 -C 3 alkoxy, R 4 may have one...
5055567 Disperse dyes which are convertible into a thermo-migration fast form  
The dyes according to the invention consist of a chromophore and a radical which, on heating, forms an isocyanate or isothiocyanate group. The latter reacts with a suitable group in the...
4985043 Mixtures of monoazo dyes containing halogen and cyano substituents  
Mixtures of monoazo dyes suitable for dyeing and printing hydrophobic fiber materials and mixtures thereof with natural fibers contain one or more dyes of the formula I ##STR1## and one or more...
4950305 Water-insoluble monoazo dyes, their preparation and use, and mixtures of these monoazo dyes  
Hydrophobic textile materials can be dyed or printed with one or more monoazo dyes of the formula ##STR1## in which R 1 is fluoro, chloro or bromo; R 2 is hydrogen or chloro; and R 3 is...
4941997 Amphiphilic azo dyes and molecular aggregates thereof  
The invention relates to compounds of formula I ##STR1## wherein R 1 is C 12 -C 30 alkyl, R 2 is hydrogen or C 1 -C 30 alkyl, R 3 is C 1 14 Calkyl or C 1 -C 3 alkoxy, R 4 may have one of...
4914190 Tricyanovinyl-N,N-disubstituted anilines as disperse dyes  
Disperse dyes of the formula ##STR1## in which X is hydrogen, C 1 -C 4 alkyl, C 1 -C 4 alkoxy or halogen, Y is hydrogen, halogen, C 1 -C 4 alkyl, C 1 -C 4 alkoxy, C 1 -C 4 alkoxy-C 1 -C...
4906741 Azo dimers containing the hexafluoroisopropylidene group  
The invention is directed toward compounds having the formula: ##STR1## wherein A is a substituent independently selected from the group consisting of lower alkyl having from 1 to 3 carbon atoms,...
4904765 Dye mixtures containing an oil-soluble dye and an acid-extractable dye  
Dye mixtures contain an oil-soluble dye and a dye of the formula ##STR1## where D is phenyl which is unsubstituted or substituted by methyl or methoxy, R is hydrogen or methyl, R 1 is hydrogen or...
4833235 Sulfo group-containing disaz compounds having a heterocyclic coupling component radical  
Disazo compounds of the formula ##STR1## and salt thereof, D is the radical of a diazo component of the benzene or naphthalene series. K is the radical of a heterocyclic coupling component of...
4795807 Preparation of azo dyestuffs by diazotization and coupling in the presence of an ester  
Azo disperse dyestuffs are prepared by diazotization and coupling in an aqueous phase, the coupling being carried out in the presence of an ester of a lower aliphatic carboxylic acid.
4776886 Halftone gravure printing inks containing an azo dyestuff  
A halftone gravure printing ink (A) about 2 to about 20% by weight of colorant, (B) about 10 to about 40% by weight of resin and (C) about 80 to about 50% by weight of solvent wherein said...
4749813 4-alkyl-2-trifluoromethylanilines  
4-Alkyl-2-trifluoromethylanilines, in particular the 4-isopropyl derivative, are starting materials for preparing valuable azo dyestuffs. While the nonionic dyestuff types can preferably be used in...
4704452 Azo dyes containing aralkyl-nitrophenyl diazo components  
Monoazo compounds of the formula ##STR1## in which one of the two substituents R 1 or R 2 or both substituents are C 3 -C 8 -alkyl or a group of the formula ##STR2## in which R 3 and R 4 are...
4663440 Bisazo brown reactive dye  
A brown reactive dye represented by a free acid of the formula, ##STR1## wherein R is a hydrogen atom or a C 1 to C 4 alkyl group, X is --SO 2 CH 2 CH 2 Cl, --SO 2 CHCH 2 , --SO 2 CH 2 ...
4619893 Light-sensitive material for silver salt diffusion transfer process with antihalation dye  
A light-sensitive material for a silver salt diffusion transfer process is described, having an antihalation layer containing at least one oil-soluble dye represented by following general formula...
4609727 5-C.sub.1-4 alkoxy-2-C.sub.1-2 alkyl-2',4'-dinitro-6'-halo-4-substituted amino-azobenzenes  
Compounds of the formula ##STR1## wherein R 1 is nitro or cyano; R 2 is cyano or halo; R 3 is C 1 -4 alkyl; R 4 is methyl or ethyl; R 5 is C 1 -8 alkyl; and R 6 is --CH 2 ...
4544737 Piperazinyl-triazinylnaphtholsulphonic acid azo dyes  
Water-soluble triazine compounds which, in their betaine form correspond to the formula ##STR1## wherein R 1 denotes hydrogen or alkyl, R 2 and R 3 independently of one another denote...
4406661 Process for dyeing and printing synthetic, hydrophobic fibre material with dischargeable azo disperse dye  
Azo dyestuffs free from groups imparting solubility in water are used in the process for the production of white or variously colored designs on a colored substrate on textile materials containing...
4396545 Bis(arylazo)diimides pigments  
The products of the invention are high melting, highly insoluble N,N'-bis(arylazo)diimides prepared by reacting 2 mols of an arylazoaromatic amine with pyromellitic acid dianhydride or...
4381261 Structurally colored cross-linkable compounds, their preparation and their utilization in coating compositions  
Structurally colored cross-linkable compounds usable in coating compositions of the formula: ##STR1## wherein A is a single bond, an oxygen atom or an ##STR2## group, R 1 being an alkyl group...
4359398 Liquid crystal compositions with novel tris-azo dichroic dyes  
Novel tris-azo dyes and a liquid crystal composition containing the tris-azo dyes. The tris-azo dyes are of the general formula: ##STR1## wherein R 1 and R 2 are various aromatic groups including...
4348319 Process for the preparation of cyano-azo dyestuffs  
The invention relates to a process for the preparation of azo dyestuffs containing a cyano group in the ortho-position relative to the azo bridge, by reacting corresponding orthohalogeno-azo...
4313872 Azo coupling in two-phase water-alcohol mixtures  
Azo dyes are very simply made in high purity and very good yield by coupling a diazonium compound with a coupling compound in a mixture essentially of water with a simple alkanol having four to six...
4279815 Production of high-quality aromatic amino azo compounds by the rearrangement of 1,3-diaryl triazenes  
A 1,3-diaryl triazene, in a solution obtained by the diazotization-coupling of a primary aromatic monoamine with a gas containing NO and NO 2 , which solution contains the monoamine and up to about...
4275003 Preparation of aromatic azoamines by diazotization/coupling/rearrangement of aromatic amines  
Aromatic azoamines are prepared by diazotizing an aromatic amine, coupling the diazonium salt with the aromatic amine, and rearranging the resulting aromatic diazoamine. The several reactions are...
4268439 Basic azo dyestuffs having benzylammoniumamine substituent in the coupling component  
Basic azo dyestuffs which are free from sulfonic acid and carboxylic acid groups and correspond to the formula ##STR1## wherein the radical have the below mentioned meaning, water-solubility and...
4252718 Continuous azo coupling process  
A process for the preparation of an aqueous slurry of a water-insoluble azo compound which comprises continuously mixing together, in a reaction zone from which the slurry is continuously removed,...
4247457 Cationic dyes containing an aryloxy group linked through a bridging radical to a quaternized nitrogen atom  
Basic dyes, e.g., azo dyes and anthraquinone dyes, free from sulphonic acid groups which contain, a group of the formula ##STR1## in which R and R 1 , independently, are substituted or...
4243606 N-Substituted anilines  
The present invention relates to new N-substituted anilines which correspond to the general formula: ##STR1## in which R 1 represents an alkyl radical or substituted alkyl radical, R 2 represents...
4242499 Colored polymers comprising poly(organophosphazenes) with chromophores as substituent groups  
Poly(organophosphazenes) with chromphoric substituents and method of preparation. Products are useful to add color to polyphosphazene polymers to produce food colorants, colored films, colored...
4229345 (2-Chloro-4-cyanophenyl) (4-dialkylaminophenyl)-diazine dye useful for transfer printing  
Dyes useful for transfer printing and having the formula ##STR1## in which X and Y are hydrogen or halogen, Z is hydrogen or methyl, R 1 is hydrogen, lower alkyl or alkoxy, R 2 is...
4226784 2- and 5-Aminoalkylamino anthraquinone dyes useful as basic dyes in coloring hair  
A compound of the formula A-NR--(CH 2 ) n --NHR' wherein R and R' are hydrogen, n is a whole number between 2 and 6 inclusive and A is selected from (1) anthraquinonyl per se wherein NR-(CH 2 ) n ...
4222935 Process for the manufacture of aromatic nitriles  
A process for the manufacture of aromatic nitriles by reacting an aromatic halogen compound with formamide and the anhydride of a monocarboxylic acid in the presence of a copper catalyst and an...
4213900 Spray-drying method for the preparation of water-dispersible pulverulent disperse dye formulations  
Easily water-dispersible pulverulent formulations of disperse dyes are prepared by spray-drying a dye solution which comprises (a) one or more disperse dyes, (b) one or more water-soluble...
4210414 Dye mixtures for coloring mineral oil products  
Mixtures of dyes of the formula ##STR1## where R is hydrogen or methyl and n is a number from 0 to 6 are exceptionally suitable--especially when used in the form of stock solution--for coloring...
4204994 Azoanilino-toluene sulfonamidoalkyleneamine cationic disazo dyes for paper  
Cationic disazo dyes useful for dyeing paper pulp and characterized by outstanding affinity for paper pulp, both under waterleaf and sized dyeing conditions, are provided. The dyes have the...
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