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| Number | Title | Issue Date |
| 6130319 | Methods of making cationic azo dye compounds having flocculating properties using reactive dyes A flocculating dye reduces bleed between two inks when they are applied side by side. A first ink comprises the flocculating dye which flocculates the dispersant-pigment of the second ink.... | 10/10/2000 |
| 5929216 | Benzothiazolium containing azo dyes useful for dyeing polyacrylonitrile Disclosed are dyes having the formula ##STR1## in which R1 is C1 -C4 alkoxy or chlorine, R2 is C1 -C4 alkyl, R3 is C1 -C4 alkyl, R4 is C1 -... | 07/27/1999 |
| 5708151 | Cationic imidazole azo dyes The cationic imidazole azo dyes of the formulae ##STR1## in which A and A1 independently of one another are each a radical of the formula ##STR2## Z is the radical of an aliphatic or aromatic diamine, R1 and R2 ... | 01/13/1998 |
| 5635607 | Cationic or basic azo dyes consisting of an amino benzothiazole diazo component and a disubstituted aniline component, which dyes contain at least one aromatic radical The cationic or basic aminobenzothiazole dyes disclosed herein are particularly suitable for dyeing paper. Paper is dyed with these dyes in blue or violet shades of good fastness properties.... | 06/03/1997 |
| 5436323 | Cationic 1,3,4-thiadiazole dyestuffs Cationic 1,3,4-thiadiazolyldiphenylamine dyestuffs and corresponding anhydro bases, the dyestuffs having the formula (I) ##STR1## their preparation and their use, and materials dyed with such dyestuffs.... | 07/25/1995 |
| 5290347 | Salt-forming type dye, and its concentrated solution composition and ink composition The present invention provides a novel salt-forming type dye represented by the formula: ##STR1## wherein D is a residue of a monoazo or disazo dye, m is an integer of 1 to 3, n is an integer of 1 to 4, and M+ is a cation selected from th... | 03/01/1994 |
| 5284939 | Process for the preparation of highly concentrated solutions of cationic azo dyes There is described a process for the preparation of highly concentrated aqueous solutions of specific cationic azo dyes. The solutions are prepared by diazotising a diazo component in a solution which contains sulfuric acid, coupling the diazotised compon... | 02/08/1994 |
| 5264560 | Preparation of quaternized azo dyes Quaternized azo dyes whose diazo components are derived from a five-membered nitrogen-containing aromatic aminoheterocycle and whose coupling components are derived from the aniline series are prepared by reacting to corresponding neutral dye-bases with a... | 11/23/1993 |
| 5239063 | Fibre reactive azo dyestuffs Fiber reactive azo dyestuffs of the formula ##STR1## in which R=H or C1 -C6 alkyl, which can be substituted with OH, Hal, SO3 H or OSO3 H; Z=heterocyclic five or six membered ring; n, m=0, 1 or 2, wherein n+m=0,... | 08/24/1993 |
| 5208325 | Cationic 1,3,4-thiadiazole dyestuffs Cationic 1,3,4-thiadiazole dyestuff of the formula ##STR1## in which R1 and R2, independently of one another, denote hydrogen, alkyl, alkenyl, cycloalkyl, aralkyl, aryl, a heterocycle, said heterocycle having a direct bond to the nit... | 05/04/1993 |
| 5175260 | Disazo dyes with hydroxysulfonylnaphthalene coupling components Disazo dyes suitable for preparing inks have the formula ##STR1## where m is 1 or 2, n is 0 or 1, Z1 is hydrogen or substituted or unsubstituted C1 -C4 -alkyl, Z2 is hydrogen, substituted or unsubstituted C... | 12/29/1992 |
| 4997918 | Benzthiazolium azo dyes Novel cationic azo compounds of the formula ##STR1## wherein R1 is C1 -C4 -alkylene, R2 is C1 -C4 -alkyl, R3 is C1 -C4 -alkyl, R4 is hydrogen, C | 03/05/1991 |
| 4992495 | Process for coloring high-molecular weight organic material using amine salts of azo pigments based on pyrazolone derivatives Compounds of formula ##STR1## wherein a and b are each independently of the other halogen, --CH3, --C2 H5, --OCH3, --OC2 H5 or the group of formula --NHCO--C1 -C4... | 02/12/1991 |
| 4956456 | Betaine-type cyan monoazo dyes for dying and printing fibrous materials The present invention is directed towards a betaine-type monoazo dye for dying and printing fibrous materials, represented by formula (I): Dye--X--Y (I) wherein Dye represents a cyan dye anion represented by formula ... | 09/11/1990 |
| 4940783 | Disazo containing diaminostilbene as diazo component and an aniline coupling component bearing a cationic alkyl ammonium group Disazo dyes which are suitable for dyeing and printing, especially of paper of all kinds. The dyes correspond to the formula ##STR1## in which R1, R2, R3 and R4 are each an alkyl radical, A is an alkylene radica... | 07/10/1990 |
| 4925926 | Preparation of cationic azo or hydrazone dyes in which the alkylation and the separation of the cationic dye are carried out continuously The invention relates to a continuous process for the preparation of cationic azo or hydrazone dyes from heterocyclic diazo components and coupling components. The diazo component is diazotised in water and an acid, the diazo solution is coupled with the ... | 05/15/1990 |
| 4880916 | Cationic azo dyes containing 2(p-aminophenyl)oxazolo [4,5-b]pyridines and similar compounds as diazo components Azo dyes of the formula ##STR1## or tautomers thereof, wherein Z is N,S or CH,X is O,S,NR2 or N, V is N or CH, W is N or C, K is a coupling component from the group consisting of acylacetarylamides, phenols, pyridones, quinolines, pyrazole... | 11/14/1989 |
| 4845202 | Water-soluble disazo compounds containing 3-carboxy or 3-carbamoylpyridium-s-triazinyl groups and fiber-reactive groups of the vinyl sulfone series suitable as dyestuffs Water-soluble disazo compounds having useful fiber-reactive dye properties, which conform to the general formula (1) defined hereinafter and dye carboxamido- and/or hydroxy-containing materials in fast shades. Fast dyeings on cellulose fiber materials can... | 07/04/1989 |
| 4839468 | N-(hydroxy-sulpho-naphthyamino-triazinyl)-arylene-diamines Triazine compounds which in their betaine form correspond to the formula ##STR1## wherein Y denotes hydrogen or the radical of an azo dye-stuff, R denotes hydrogen or alkyl, Ar denotes arylene, Z denotes halogen, hydroxyl, alkoxy, alkyl, aryl or an amino group... | 06/13/1989 |
| 4820806 | Metal-free azo compounds containing a vinylsulfonyl group and at least one basic group and 1:1 and 1:2 metal complexes thereof Metal-free monoazo and disazo compounds of the formula 1:1 and 1:2 metal complexes of such metallizable metal-free compounds and acid addition salts of such metal-free compounds and 1:1 and 1:2 metal complexes, wherein D is the radical of a diazo component of ... | 04/11/1989 |
| 4818815 | Cationic 1,2,3-thiadiazole-azo-aniline or tetrahydroquinoline compounds The invention relates to novel 1,2,3-thiadiazole-axo compounds of formula ##STR1## wherein R is unsubstituted or substituted alkyl or alkenyl, R1 is hydrogen or unsubstituted or substituted alkyl or alkenyl, R2 is hydrogen or unsubstitute... | 04/04/1989 |
| 4760132 | Process for preparing cationic hydrazone dyestuffs Cationic hydrazone dyestuffs of the general formula ##STR1## in which R1 stands for hydrogen, C1 -C4 -alkyl, C1 - to C4 -alkoxy, nitro or halogen, R2 stands for hydrogen, C1 - to... | 07/26/1988 |
| 4754021 | Methine-azo compounds containing cyclic ammonium groups Methine-azo compounds of the formulae ##STR1## in which A is the complement to a heterocyclic 5- or 6-membered ring which has a quaternized N atom as a ring member, which can contain further hetero atoms and which can be substituted and/or be fused w... | 06/28/1988 |
| 4754022 | Cationic dyes from diazotized 5-aminoisothiazoles and tetrahydroquinolines or indolines The invention relates to novel cationic isothiazolazo compounds of the formula ##STR1## wherein R1 is unsubstituted or substituted C1 -C4 alkyl R2 is hydrogen or C1 -C4 alkyl, R3... | 06/28/1988 |
| 4742162 | Azo-stibene condensates as leather dyes Condensates of an azo compound of the formula ##STR1## wherein n is 1 or 2, with the stilbene compound of the formula ##STR2## in the molar ratio of 1:1 to 2:1, dye leather in a yellowish-brown shade, which penetrate deeply into the leather, and... | 05/03/1988 |
| 4736021 | 4-Benzothiazolyl phenyl azo dyes There are described azo compounds of the formula ##STR1## wherein K is an optionally quaternized basic group, X is the radical COOR, in which R is an alkyl group or a substituted or unsubstituted phenyl group, or X is the radical CONHR', in which R' is an... | 04/05/1988 |
| 4694075 | Bisazo compounds containing anthranilic acid and thiazole moieties The compounds of the formula ##STR1## where Y is hydrogen, chlorine, bromine or nitro, Z is hydrogen, chlorine, bromine, a sulfonic ester group or unsubstituted or substituted sulfamyl, X is --O-- or ##STR2## R is alkylene which may or may ... | 09/15/1987 |
| 4687842 | Monoazo compounds having an imidazolium-2 group linked through an azo radical to a substituted phenyl group Compounds of the formula ##STR1## wherein each of R and R1 is independently hydrogen, C1-4 alkyl, phenyl or phenyl substituted by 1 to 3 C1-4 alkyl, C1-4 alkoxy or halo substitutents or R and R1 ... | 08/18/1987 |
| 4670546 | Disazo and polyazo compounds containing at least two cationic groups in metal-free or 1:1 or 1:2 metal complex form Compounds of the formula ##STR1## in metal-free, 1:1 or 1:2 metal complex form, or in acid addition salt form, where the symbols are defined in the specification, useful as dyes for, for example, regenerated cellulose, cotton, synthetic polyamides an... | 06/02/1987 |
| 4665162 | 1:1 and 1:2 metal complexes of sulfo group-free azo compound having on average at least 1.3 basic water-solubilizing groups Metal-free azo compounds of the formula ##STR1## wherein Ra is an aromatic group or an active methylene coupling component radical as defined in the specification, Rt is an arylazo group or a group of the formula --Y--Z, wherein Y is a direct b... | 05/12/1987 |
| 4654384 | Basic water-soluble bis-(ଲ-azo--naphtholamino)-triazine compounds Novel water-soluble triazine compounds of the formula ##STR1## in which D and D1 independently of one another are radicals of diazo components, R and R1 independently of one another are hydrogen or C1 -C4 -... | 03/31/1987 |
| 4638053 | Process for the preparation of chlorozincate salts of benzo thiazolium azo dyestuffs by alkylating with dialkylsulfate in aqueous medium in the presence of Zn-containing acid acceptor at pHࣘ7 Chlorozincate salts of benzothiazonium azo compounds are prepared by reacting benzothiazolium azo compounds with an dialkylsulfate having from 1 to 4 carbon atoms in the alkyl radicals, which process comprises carrying out the reaction in an aqueous mediu... | 01/20/1987 |
| 4626589 | Organic dye compound having both pyridiniotriazinyl and vinylsulfone type fiber-reactive groups A compound of the formula, ##STR1## wherein D is an organic dye moiety, R1 and R2 are independently hydrogen or a substituted or unsubstituted lower alkyl group, R3 is hydrogen or a substituted or unsubstituted lower ... | 12/02/1986 |
| 4587292 | Sulfo group-free azo compounds having on average at least 1.3 basic water-solubilizing groups in metal-free, 1:1 metal complex or 1:2 metal complex form Metal-free azo compounds of the formula ##STR1## wherein Ra is an aromatic group or an active methylene coupling component radical as defined in the specification, Rt is an arylazo group or a group of the formula --Y--Z, wherein Y is a direct b... | 05/06/1986 |
| 4581445 | Cationic benzothiazole disazo compounds There are described novel cationic benzothiazole disazo compounds of the formula ##STR1## K independently of one another are each a coupling component, R independently of one another are each an unsubstituted or substituted C1 -C... | 04/08/1986 |
| 4525583 | Quaternary ammonium substituted benzothiazolylphenyl azo pyrimidine dyes Benzthiazole compounds of the formula ##STR1## or a tautomeric form thereof, in which KK is the radical of a pyrimidine coupling compound as defined, W is a radical of the formula --CH2 --NH--CO--C1 --C4 -alkyl-Q... | 06/25/1985 |
| 4517358 | Disazo bis-benzthiazolyl compounds Cationic disazo compounds of the formula ##STR1## wherein K independently of one another are each a coupling component, R independently of one another are each an unsubstituted or substituted C1 -C4 -alkyl group, R1 indepe... | 05/14/1985 |
| 4432900 | Cationic dyestuff printing inks Bleed-fast, dyes cellulosics particularly absorbent papers have been obtained with a particular class of water-soluble, cationic dyes reacted with a water-soluble aldehyde, preferably formaldehyde, glyoxal or glutaraldehyde. An aqueous printing fluid cont... | 02/21/1984 |
| 4432897 | Cationic thiadiazolyl triazene dyestuffs The cationic triazene dyestuffs of the general formula ##STR1## wherein B denotes alkylmercapto, arylmercapto or a radical of the formula ##STR2## R denotes hydrogen or an alkyl, alkenyl, acyl, cycloalkyl, aryl, aralkyl, amino, alkylamino, dial... | 02/21/1984 |
| 4424349 | Process for the preparation of cationic hydrazone dyestuffs Dyestuffs of the general formula ##STR1## wherein R1 denotes alkyl, alkenyl, aralkyl or cycloalkyl, R2 denotes hydrogen, alkyl, alkenyl, aryl, aralkyl or cycloalkyl, or alkylene bonded to the ring a, R3 denotes hydrogen or... | 01/03/1984 |
