| Patents for C09B 31 - Disazo or polyazo dyes of the type a b c, a b c d, or the like, prepared by diazotising and coupling (1,445) |
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| 09/16/1997 | US5667571 Solvent-based black ink composition |
| 09/12/1997 | WO1997032932A1 Azo compound |
| 09/12/1997 | WO1997032931A1 Azo compounds |
| 09/02/1997 | US5663309 Diazo dyes having a phenylene group as the middle component and a naphthalene group as the terminal diazo component |
| 09/02/1997 | US5663308 Organosilicon polymers, and dyes, exhibiting nonlinear optical response |
| 08/19/1997 | US5659020 Tetrakisazo compound and a polarizing film containing the same |
| 07/22/1997 | US5650497 Azo dyes, processes for their preparation and their use |
| 06/25/1997 | EP0780447A2 Aqueous dye solutions |
| 06/17/1997 | US5639809 Azo compounds and polarizing films using the compounds |
| 06/10/1997 | US5637679 Water resistance, wear resistance, resolution, colorfastness |
| 06/10/1997 | US5637678 Process for preparing azo dyes containing A2- (arylsulphonylamino)-pyrimidine group |
| 04/22/1997 | US5623060 Dye mixture containing at least four diazo dyes having the same color with a diaminopyridine coupling component |
| 04/09/1997 | EP0767220A1 Pyridonmethidazo dyes |
| 04/02/1997 | EP0765154A1 Direct-acting hair colouring agent |
| 04/01/1997 | US5616696 Azo dyes having utility for ink jet printers |
| 03/26/1997 | CN1145933A Azo dyes, processes for their preparation and their use |
| 03/05/1997 | EP0759956A1 Disazo compound |
| 02/25/1997 | US5606034 Process for the preparation of azo dyes |
| 02/25/1997 | US5605726 Organosilicon polymers, and dyes, exhibiting nonlinear optical response |
| 02/12/1997 | EP0716671B1 Dye mixtures containing azo dyes having the same colour and a coupling component from the diaminopyridine series |
| 01/30/1997 | WO1997003132A1 Stabilised dye composition |
| 01/22/1997 | EP0754733A1 Azodyes, process for their preparation and use thereof |
| 01/22/1997 | EP0754732A1 Azo dyes, process for their preparation and use thereof |
| 01/22/1997 | CN1141055A Process for detecting marked mineral oils and new azo dyes |
| 01/22/1997 | CA2181663A1 Azo dyes, processes for their preparation and their use |
| 01/01/1997 | CN1139449A Use of azo dyes for marking hydrocarbons and novel azo dyes |
| 12/31/1996 | US5589100 Liquid crystal display substrates with arylazo or polyarylazo dyes |
| 12/04/1996 | EP0745153A1 Disazo dyes containing a fluorosulphonyl group and use thereof |
| 12/03/1996 | US5580965 Suitable for inkjet printing |
| 11/13/1996 | EP0572419B1 Anionic disazo dyes |
| 11/05/1996 | US5571898 Basic dyes based on amides of j-acid (1-hydroxy-6-aminonaphthalene-3-sulfonic acid) and amides of j-acid |
| 10/09/1996 | EP0736080A1 Use of azo dyes for marking hydrocarbons and novel azo dyes |
| 10/02/1996 | EP0735106A2 Disazo dyes |
| 09/24/1996 | US5559217 Disazo dyes and a process of dyeing paper therewith |
| 09/10/1996 | US5554738 Acyl-aryl disazo having a 6-ureido-1-hydroxy-naphthalene-3-sulfonic acid coupling component |
| 09/10/1996 | US5554736 Azo dyes containing a 2-(arylsulphonylamino)pyrimidine radical |
| 09/04/1996 | CN1130391A Dye mixtures containing azo dyes having the same colour and coupling component from diaminopyridine series |
| 08/27/1996 | US5550218 Disperse dyes for dyeing or printing textile materials mades of natural, synthetic or semi-synthetic hydrophobic organic materials |
| 08/27/1996 | US5550217 Dye polyester materials in red shades with good fastness to thermomigration |
| 08/21/1996 | EP0727465A2 An azo compound and a polarizing film containing the same |
| 08/07/1996 | EP0724609A1 Diphenylamine compounds |
| 08/06/1996 | US5542956 Process for dyeing or printing hydroxyl group containing fiber materials |
| 07/31/1996 | EP0723574A1 Process for detecting marked mineral oils and new azo dyes |
| 07/16/1996 | CA2031797C Liquid crystal coupled dichloric dyes |
| 07/03/1996 | EP0719837A2 Azo dyes, process for their preparation and use thereof |
| 06/19/1996 | EP0716671A1 Dye mixtures containing azo dyes having the same colour and a coupling component from the diaminopyridine series |
| 06/18/1996 | US5527889 Disazo dyes containing an alkanoylamino group and a substituted alkoxy group |
| 06/18/1996 | US5527887 Disazo acid dyestuffs for polyamide fibers applicable in neutral solution |
| 05/09/1996 | WO1996013553A1 Disaro colorant |
| 05/07/1996 | US5514783 Azo dyes containing a 2-(arylsulphonylamino)-pyrimidine radical and metal complexes thereof |
| 04/30/1996 | US5512663 Disazo reactive dyestuffs |
| 04/23/1996 | US5510483 2-(arylsulphonylamino)-pyrimidine intermediates for Azo dyes |
| 04/23/1996 | US5510468 Amino benzophenone dye |
| 04/02/1996 | US5503666 Dyestuffs and their use in inks for ink-jet printing processes |
| 03/20/1996 | EP0702061A2 Tetrakisazo compound and a polarizing film containing the same |
| 02/27/1996 | US5494507 Waterfastness |
| 01/30/1996 | US5487770 Detection of marked mineral oils and novel azo dyes |
| 01/30/1996 | US5487761 Process for dyeing paper with disazo dyes |
| 01/23/1996 | US5486214 Mono or disazo dyes, lignin peroxidase and veratryl alcohol mixture for degradation of dyes |
| 01/17/1996 | EP0692523A1 Azo dyestuffs, their preparation and use |
| 12/27/1995 | EP0688830A1 Azo compounds and polarizing films using the compounds |
| 12/26/1995 | US5478384 Recording liquid |
| 12/21/1995 | WO1995034273A1 Direct-acting hair colouring agent |
| 11/23/1995 | WO1995031505A1 Disazo compound |
| 11/14/1995 | US5466282 Azo dye compound, ink containing the same, and recording method and instrument using the ink |
| 10/26/1995 | WO1995028447A1 Disperse dyes derived from hindered indoline couplers |
| 10/18/1995 | EP0677557A1 Dyes and the use thereof in inks for ink jet printing process |
| 09/26/1995 | US5453495 Ink jet printing |
| 08/30/1995 | EP0669380A2 Process for the preparation of azo dyes |
| 08/29/1995 | US5446135 Water soluble |
| 08/24/1995 | WO1995022649A1 Disazo dyes containing a fluorosulphonyl group and use thereof |
| 08/24/1995 | CA2180850A1 Disazo dyes containing a fluorosulphonyl group and use thereof |
| 06/29/1995 | WO1995017483A1 Use of azo dyes for marking hydrocarbons and novel azo dyes |
| 06/29/1995 | WO1995017472A1 Disazo compound |
| 06/29/1995 | WO1995017471A1 Disazo compound |
| 06/29/1995 | CA2177366A1 Use of azo dyes for marking hydrocarbons and novel azo dyes |
| 05/30/1995 | US5420258 For dyeing or printing of nitrogen containing or hydroxyl group containing fiber materials |
| 05/30/1995 | US5420254 Monoazo dyes for textiles such as cellulose or polyesters |
| 04/27/1995 | WO1995011278A1 Diphenylamine compounds |
| 04/20/1995 | WO1995010581A1 Process for detecting marked mineral oils and new azo dyes |
| 04/20/1995 | CA2172959A1 Process for detecting marked mineral oils and new azo dyes |
| 03/16/1995 | WO1995007318A1 Dye mixtures containing azo dyes having the same colour and a coupling component from the diaminopyridine series |
| 02/21/1995 | US5391720 Imidazole dyes formed by reaction of imidazoles with diazonium salts |
| 02/14/1995 | US5389285 Liquid crystal coupled dichroic dyes |
| 02/14/1995 | US5389110 Intense, colorfast, water soluble yellow dyes |
| 01/26/1995 | WO1995002848A1 Multifunctional azo compounds and polymers derived therefrom for nonlinear optics |
| 01/10/1995 | US5380859 Pyridone compounds and the preparation of disulfonated pyridone compounds |
| 01/05/1995 | WO1995000592A1 Disazo dyes |
| 12/06/1994 | US5371201 Azo dyes and preparation and use thereof |
| 11/30/1994 | EP0626428A1 Azo dye compounds, ink containing the same, and recording method and instrument using the ink |
| 11/22/1994 | US5366543 Alcohol-soluble dye and ink composition containing the same |
| 11/09/1994 | EP0623704A1 Dyeing process of paper with disazo dyes |
| 11/02/1994 | EP0622424A1 Reactive dyes |
| 10/26/1994 | EP0572450B1 Azo dyes having a diazo component from the aminobenzophenone series, as well as bisulphonated pyridone compounds |
| 10/11/1994 | US5354849 Sulfo group-containing disazo compounds containing substituted amino-1,3,5-triazinil or- chloropyrimidyl |
| 09/22/1994 | DE4407802A1 Azo compounds and intermediates, preparation thereof and use thereof |
| 08/24/1994 | EP0611811A1 Recording fluid |
| 08/24/1994 | CA2116063A1 Stabilisation of organic pigments |
| 08/23/1994 | US5340504 Light-polarizing films containing dichroic dyes |
| 07/26/1994 | US5332806 Disazo dyes which contain 2-hydroxynaphthyl moiety |