| Patents for C09B 44 - Azo dyes containing onium groups (862) |
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| 05/12/1982 | EP0051559A1 Basic and/or cationic azo compounds free from sulfonic-acid groups |
| 05/11/1982 | CA1123430A1 Concentrated water solutions of a cationic dye, and preparation process thereof |
| 05/05/1982 | EP0051041A1 Basic or cationic sulphonic acid group-containing azo compounds, their synthesis and their use in dyeing substrates containing paper or cotton as well as dyestuff preparations thereof |
| 04/27/1982 | US4327018 Azo dyes and the production and use thereof |
| 02/24/1982 | EP0046237A1 Process for the manufacture of solutions of cationic azo dyestuffs |
| 02/10/1982 | EP0045719A2 Crystallised salts of triazole dyestuffs |
| 02/10/1982 | EP0045402A2 Process for the quaternisation of 1,3,4-thiadiazole-azo dyestuffs |
| 02/09/1982 | US4314817 For dyeing textile substrates |
| 01/20/1982 | EP0044061A1 Process for the dyeing in a gel state of fibrous articles spun from acrylonitrile polymer solutions in organic solvents |
| 01/05/1982 | CA1115579A1 Color diffusion transfer photographic element containing an azo yellow dye image - forming compound |
| 12/29/1981 | US4308205 Water-soluble monoazo cationic dyestuffs derived from 1-phenyl-3-aminopyrazoles |
| 12/02/1981 | EP0041040A1 Sulphofree basic azo compounds in metal complex form, in metal-free form and method for preparing the same |
| 11/12/1981 | WO1981003179A1 Improvements in or relating to organic compounds |
| 10/14/1981 | EP0037506A1 Process for the preparation of cationic dyestuffs |
| 10/14/1981 | EP0037505A1 Process for the preparation of cationic dyestuffs |
| 10/13/1981 | US4294756 Azo-imidazole dye, polyacrylonitrile |
| 09/30/1981 | EP0036505A2 Process for the preparation of cationic dyestuffs and their use in dyeing acid-modified synthetic fibres |
| 09/29/1981 | US4292238 Alkylation of benzthiazole-azo-phenylamine dyestuffs |
| 09/23/1981 | EP0036116A2 Method of preparing azo dyestuffs |
| 09/15/1981 | US4289693 Textiles |
| 08/25/1981 | US4285859 Azo compounds useful in a photographic dye diffusion transfer process |
| 07/28/1981 | US4281112 Reacting azo bases with dimethyl sulfate |
| 07/21/1981 | CA1105451A1 Monoazoic hydrosoluble cationic dyes |
| 07/07/1981 | US4277396 Thiazolediazacyanine dyestuffs |
| 06/16/1981 | US4273707 Monoazo and disazo dyes containing at least one sulfo group and at least two basic or cationic groups |
| 05/26/1981 | US4269928 Process for the production of photographic images by dye diffusion transfer and photographic material suitable in this process |
| 05/26/1981 | US4269768 Process for the preparation of chlorozincate salts of thiazolium azo dyestuffs |
| 05/19/1981 | US4268439 Basic azo dyestuffs having benzylammoniumamine substituent in the coupling component |
| 05/19/1981 | US4268438 Cationic 1,3,4-thiadiazole dyestuffs |
| 04/28/1981 | US4264496 Where the anion is an acid anion; for coloring or printing acrylic fibers |
| 04/21/1981 | US4263204 Monoazoic hydrosoluble cationic dyes |
| 03/17/1981 | US4256635 Basic monoazo dyes |
| 03/04/1981 | EP0024322A2 Cationic azo dyestuffs, their preparation, their use in colouring synthetic and natural materials, and compositions containing them |
| 03/04/1981 | EP0024321A2 Cationic azo dyestuffs, their preparation, their use in colouring paper and compositions containing them |
| 02/24/1981 | US4252716 Benzthiazolyl-azo-indole basic dyestuffs |
| 02/17/1981 | US4251440 For printing or dyeing |
| 02/11/1981 | EP0023770A1 Cationic pyridone azo dyestuffs, certain novel coupling components from which they are derived and processes for the manufacture of the dyestuffs and the coupling components |
| 02/11/1981 | EP0023671A1 Process for the preparation of cationic dyestuffs |
| 02/11/1981 | EP0023652A1 Process for the preparation of cationic dyestuffs |
| 02/10/1981 | US4250089 Process for diazotizing aromatic amines |
| 02/03/1981 | US4248775 Preparation of solutions of azo methine basic dyestuffs |
| 02/03/1981 | US4248772 Positively or negatively charged azo compounds containing a ballasting group |
| 01/27/1981 | US4247457 Cationic dyes containing an aryloxy group linked through a bridging radical to a quaternized nitrogen atom |
| 01/20/1981 | US4246172 For dyeing textiles such as polyacrylonitrile, and acid modified polyesters and polyamides |
| 12/23/1980 | US4240959 For acrylonitrile polymer or copolymer fibers; fastness |
| 12/16/1980 | CA1091654A1 Azo dyestuffs |
| 11/11/1980 | US4233214 Cationic azo dyestuffs with a hydroxyalkylated ammonium group |
| 10/14/1980 | US4228072 1-(N-alkyl-n-benzyl or substituted benzyl-N-methyl(ammonium)alkyl)-3-cyano-4-alkyl-5-(alkyl-halo-phenyl)azo-6-hydroxypyridone-2 compounds |
| 10/01/1980 | EP0016726A2 Basic or quaternised azodyestuffs of the 2-(4'-azophenyl) benzothiazole series, process for their preparation and their use in dyeing and printing textile material, paper and leather |
| 09/30/1980 | US4225490 Heterocyclyl-azo-phenyl dyes having a cationic group linked through a branched alkylene chain to the nitrogen atom of the coupling component radical |
| 09/17/1980 | EP0015872A1 Cationic azodyestuffs, their preparation and their use in dyeing and printing textile material |
| 09/02/1980 | US4220449 Quaternated polyamine salts |
| 08/26/1980 | US4219472 5-Aminomethyl-2-amino naphthyl-(1) azo dyes |
| 08/20/1980 | EP0014677A2 Basic monoazo dyes of the bis-benzothiazole-azobenzene series, process for their preparation and their use in dyeing and printing textiles, paper, leather and in preparing inks |
| 08/19/1980 | US4218369 For dyeing polyacrylonitrile |
| 08/12/1980 | US4217271 Basic azo dyestuffs containing a n-picolinium alkylene amino phenyl group |
| 08/05/1980 | US4216146 Azo(hydrazo)-anthraquinone compounds |
| 07/22/1980 | US4213898 For polyacrylonitrile |
| 07/22/1980 | US4213897 For dyeing paper |
| 07/15/1980 | US4212803 Cationic azo dyestuffs containing oxyalkylene substituent |
| 07/09/1980 | EP0012944A1 Colour-fast monoazo pigment mixtures stable against recrystallisation, process for their preparation and their use |
| 07/08/1980 | US4211697 Azoanilino-toluene sulfonamidoalkyleneamine cationic dyes for paper |
| 06/11/1980 | EP0012053A1 Concentrated aqueous solutions of cationic dyestuffs, process for their preparation and their use |
| 06/03/1980 | US4206144 N,N-Dialkyl-N-aminoalkyl-N-(amino or nitro)phenylalkyl- and N-methyl-N-[3-(amino or nitro)phenoxy-2-hydroxy-1-propyl]-N,N-bis(3-aminopropyl)quaternary ammonium salts |
| 05/27/1980 | US4204994 Azoanilino-toluene sulfonamidoalkyleneamine cationic disazo dyes for paper |
| 05/06/1980 | US4201710 Azo dyes of the pyridone series useful for flowable printing inks |
| 02/19/1980 | US4189427 Azo dyestuffs from benzene diazo component fused to an aliphatic ring and containing two cyano substituents ortho to the azo group |
| 02/05/1980 | CA1071191A1 Azo dyestuffs |
| 02/05/1980 | CA1071190A1 Basic azo dyes |
| 02/05/1980 | CA1070904A1 Process for dyeing or printing a basic dyeable textile substrate |
| 01/29/1980 | CA1070679A1 Basic azo dyes, their manufacture and use |
| 11/27/1979 | CA1067070A1 Azo dyestuffs |
| 10/30/1979 | CA1065309A1 Azo dyestuffs |
| 09/18/1979 | US4168264 Printing and dyeing of polyacrylonitrile textiles |
| 09/11/1979 | US4167509 Water soluble cationic azo dyestuffs |
| 09/04/1979 | CA1061780A1 Cationic azo dyes, their manufacture and use |
| 07/24/1979 | CA1059120A1 Process for preparing thiazolazo compounds |
| 07/10/1979 | US4160643 Water soluble cationic azo dyestuffs containing a cyclammonium group |
| 05/02/1979 | EP0001731A1 Azo-pyrazolium-dyestuffs, their preparation, their use and fibres dyed therewith |
| 05/01/1979 | CA1053835A1 Modacrylic filaments with improved coloristic properties |
| 05/01/1979 | CA1053834A1 Modacrylic filaments with improved coloristic properties |
| 04/03/1979 | CA1051876A1 Amino-pyridine derivatives and tinctorial compositions_ |
| 03/27/1979 | US4146558 Azo dyestuff intermediate nitro- or aminobenzenes ring-substituted by a quaternized amine alkyl or amino-alkoxy group |
| 02/20/1979 | US4140684 Azo dyes having a 6-hydroxy-pyridone-2 coupling component radical having a substituent in the 1-position |
| 02/06/1979 | US4138396 Pyridyl-azo-indolyl cationic dyes |
| 01/23/1979 | US4136033 6-hydroxypyridone-2 compounds having a cationic group in the 3-position |
| 12/26/1978 | CA1045123A1 Cationic azo dyestuffs |
| 12/05/1978 | CA1043513A1 Process for dyeing acid-modified polyester fibers |
| 11/07/1978 | US4124579 For polymeric materials |
| 10/24/1978 | US4122278 3-Trifluoromethyl-4-aryl-5-aminopyrazoles |
| 09/26/1978 | US4116954 5-[4-(N-trifluoroethyl-amino)phenylazo]-pyrazolium dyestuffs |
| 09/12/1978 | US4113718 Basic azo dyes |
| 09/12/1978 | US4113717 Quaternized azo dyestuffs |
| 09/05/1978 | US4111929 Polyacrylonitrile |
| 08/01/1978 | US4104268 Polyacrylonitrile, polyesters, polyamides |
| 07/25/1978 | US4103092 Cotton, paper |
| 07/18/1978 | US4101541 3-Cyano-1,2,4-thiadiazolyl-5-czo dyestuffs |
| 06/20/1978 | US4095943 Reacting halide salt with the acid in the presence of an epoxide compound |
| 05/02/1978 | US4087244 Dyeing and printing basic dyeable textile substrates with becationic disazo and trisazo dyes having optionally further substituted 6-hydroxy-4-methyl-3-N-pyridiniumpyridone-2-coupling component radicals |
| 04/18/1978 | US4085098 Azo dyes containing a heterocyclic ring having a quaternized nitrogen atom and at least one optionally substituted phenoxyalkyl or naphthyloxyalkyl substituent |