| 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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| 07/05/1994 | US5326866 Liquid azo dye and ink composition containing the same |
| 07/05/1994 | US5326865 Arylazo and poly(arylazo) dyes having at least one core radical selected from naphthyl or anthracyl and having at least one 2,3-dihydro-1,3-dialkyl perimidine substituent |
| 06/14/1994 | US5320648 Process for dyeing or printing hydroxyl group containing fibre materials |
| 06/07/1994 | US5318856 Water-soluble azo dyes and polarizing films using the dyes |
| 05/04/1994 | EP0595768A1 Azo dyestuffs, process for their preparation and the use thereof |
| 04/27/1994 | EP0594037A1 Basic dyes based on amides of I-acid (1-hydroxy-6-aminonaphthalene-3-sulfonic acid) and amides of I-acid |
| 04/21/1994 | DE4335261A1 New disperse mono:azo dyes contg. alkoxycarbonylalkylamino gp. |
| 04/20/1994 | CA2106830A1 Basic dyes based on amides of j-acid (1-hydroxy-6- aminonaphthalene-3-sulfonic acid) and amides of j-acid |
| 04/12/1994 | US5302704 For dyeing polyamide fibers; colorfastness |
| 03/29/1994 | US5298588 Organosilicon polymers, and dyes, exhibiting nonlinear optical response |
| 03/29/1994 | US5298036 Mixture of disazo dyes containing sulfo-substituted 1,4-naphthalene middle components |
| 03/09/1994 | EP0586339A1 Azo dyes, process for their preparation and the use thereof |
| 03/09/1994 | EP0585654A1 Azo dyes with a coupling component of the N-(hydroxysulfonylphenylalkyl)-pyridone series |
| 03/08/1994 | CA1327567C Trisazo dyes and process for dyeing paper |
| 03/02/1994 | EP0584915A1 Base extractable petroleum markers |
| 02/22/1994 | US5288858 Diazo dyes containing a hydroxy alkoxybenzene middle component and a pyrazole coupling component |
| 02/22/1994 | US5288294 Process for dyeing paper with disazo dyes |
| 01/30/1994 | CA2097792A1 Base extractable petroleum markers |
| 01/25/1994 | US5281263 Azo dyes containing a carboxy group |
| 12/15/1993 | EP0573809A1 Liquid azo dye and ink composition containing the same |
| 12/08/1993 | EP0572450A1 Azo dyes having a diazo component from the aminobenzophenone series, as well as bisulphonated pyridone compounds. |
| 12/08/1993 | EP0572419A1 Anionic disazo dyes. |
| 11/10/1993 | EP0569329A1 Azodyes, process for their preparation and the use thereof |
| 11/02/1993 | US5258505 Ink jet recording |
| 10/19/1993 | US5254675 Anionic disazo dyes |
| 10/19/1993 | US5254655 Organosilicon polymers, and dyes, exhibiting nonlinear optical response |
| 10/12/1993 | US5252106 Disazophenols |
| 09/21/1993 | US5247071 Preparation of acetalized azo dyes |
| 08/11/1993 | EP0555179A1 Azo dyestuffs |
| 08/11/1993 | EP0554904A2 Organosilicon polymers, and dyes, exhibiting nonlinear optical response |
| 07/27/1993 | US5231417 Ink jet recording process, device, apparatus and cartridge employing ink |
| 07/27/1993 | US5231173 Disazo metal chelate compounds for optical recording media |
| 07/06/1993 | US5225545 Colorfast |
| 06/30/1993 | EP0549530A1 Process for dyeing or printing hydroxyl group containing fiber materials |
| 06/30/1993 | EP0549529A1 Process for dyeing or printing of hydroxyl group-containing fiber materials |
| 06/30/1993 | EP0549342A2 Water-soluble azo dyes and polarizing films using the dyes |
| 06/09/1993 | EP0545420A2 Imidazole azo dyes and thermal transfer dye donating materials containing them |
| 06/01/1993 | US5216139 Thiopheneazo dye based on a coupling component of the thiazole series |
| 05/13/1993 | WO1993009192A1 Recording fluid |
| 04/28/1993 | EP0539178A2 Waterfast Dye and Aqueous Ink |
| 04/20/1993 | US5203912 Anionic dye |
| 03/31/1993 | EP0534903A1 Process for dyeing of paper with diazo dyes |
| 03/30/1993 | US5198022 Disazo Dye |
| 03/23/1993 | US5196520 Azo dyes, their preparation and the use thereof |
| 02/17/1993 | EP0527704A2 Dyestuffs, process for their preparation and the use thereof |
| 01/27/1993 | EP0524372A2 Azo compounds, inks containing same, and recording method and instrument using the same |
| 01/20/1993 | EP0524149A2 Azo dyes, method for their preparation and their use |
| 01/20/1993 | EP0524147A2 Azo dyes, method for their preparation and their use |
| 01/05/1993 | US5177195 Disazo dyes |
| 12/29/1992 | US5175260 Disazo dyes with hydroxysulfonylnaphthalene coupling components |
| 12/23/1992 | EP0519270A2 Process for the preparation of acetalised azo dyestuffs |
| 12/01/1992 | US5167703 Ink, ink-jet recording process and instrument making use of the ink |
| 11/19/1992 | EP0514330A1 Azodyes |
| 10/15/1992 | WO1992017550A1 Biodegradable azo dyes |
| 10/01/1992 | DE4209261A1 Anionische disazoverbindungen Anionic diazo compounds |
| 10/01/1992 | DE4109801A1 New deep after-chroming dis:azo dyestuff cpds. for dyeing polyamide - are nitro-phenol-azo di:alkyl-amino-benzene-azo naphthol mono:sulphonic acid cpds. |
| 09/03/1992 | WO1992014791A1 Azo dyes having a diazo component from the aminobenzophenone series, as well as bisulphonated pyridone compounds |
| 08/27/1992 | DE4105257A1 Azofarbstoffe mit einer diazokomponente, die sich von einer aminobenzophenonsulfonsaeure ableitet Azo dyes with a diazo component derived from a aminobenzophenonsulfonsaeure |
| 08/12/1992 | EP0498217A1 Dyes for polarising films and films made thereof |
| 08/06/1992 | WO1992013037A1 Anionic disazo dyes |
| 08/04/1992 | US5135570 Ink, and recording process making use of it |
| 07/15/1992 | EP0494523A1 Anionic disazo dyes |
| 07/15/1992 | EP0494522A1 Anionic disazo dyes |
| 07/14/1992 | US5130723 Ink, and ink-jet recording method and apparatus employing the ink |
| 06/17/1992 | EP0490195A1 Ink, Ink-jet recording process, and instrument making use of the ink |
| 06/09/1992 | US5120872 Textile dyeing |
| 06/02/1992 | US5118737 Water-soluble dye |
| 05/05/1992 | US5110356 Colorfast black water-based ink |
| 04/28/1992 | US5108502 Boronic acid dyes |
| 04/01/1992 | EP0477373A1 Metal chelate compound and optical recording medium comprising the same |
| 03/18/1992 | EP0475154A1 Disazo dyes of which the coupling components are from the hydroxysulphonylnaphthaline series |
| 03/17/1992 | US5097029 Process for preparing 2,3-dihydro-1,3-dialkyl-2,3-dialkyl perimidines and N,N-'-dialkyl-1,8-naphthalene diamines |
| 01/21/1992 | US5082496 Ink, and ink-jet recording method and apparatus employing the ink |
| 01/02/1992 | DE4020768A1 New triazolo-pyridine azo dyes - esp. for dyeing cellulose acetate and polyester fibres |
| 12/31/1991 | US5077164 Photosensitive member containing an azo dye |
| 12/11/1991 | EP0460504A1 Dichroic azo dyes |
| 12/03/1991 | CA1292735C Organic compounds |
| 11/21/1991 | EP0457729A1 Azodyes, process for their preparation and their use |
| 10/08/1991 | US5055566 Amine salts of disazo black dyes having good solubility in polar organic solvents |
| 10/01/1991 | US5053495 Anionic dye having high water-fastness |
| 09/20/1991 | WO1991014740A1 Metal chelate compound and optical recording medium comprising the same |
| 09/20/1991 | CA2057864A1 Metal chelate compound and optical recording medium using it |
| 09/18/1991 | EP0447196A1 Boronic acid dyes |
| 09/18/1991 | EP0446620A1 Ink, and ink-jet recording method and apparatus employing the ink |
| 09/17/1991 | US5049238 Naphthol dyes |
| 08/06/1991 | US5037967 N-phenoxyalkylene anilines as coupling components |
| 07/31/1991 | EP0439423A2 Azodyes, process for their preparation and use thereof |
| 07/23/1991 | US5034017 Lightfast, washfast blue color for paper |
| 07/17/1991 | EP0437105A1 Intermediates and colorants having primary hydroxyl enriched poly(oxyalkylene) moieties and their preparation |
| 06/25/1991 | US5026505 Pleochroic dyes with trans=4=substituted cyclohexyl groups; improved display contrast stability |
| 06/19/1991 | EP0432735A2 Liquid crystal coupled dichroic dyes |
| 03/06/1991 | EP0415581A2 Waterfast ink formulations with a novel series of anionic dyes containing two or more carboxyl groups |
| 02/19/1991 | US4994563 Dyeing, printing cellulose, silk, wool, synthetic polyamides; colorfastness |
| 01/16/1991 | EP0408195A2 Solvent soluble dye |
| 01/09/1991 | EP0406812A2 Process for the preparation of NiNi-dialkyl-1,8-naphthalene diamine |
| 01/09/1991 | EP0406629A2 Method of producing azo dyes |
| 11/06/1990 | US4968784 Phenylazophenylazonaphtholsulfonic acids substituted by a triaminotriazine radical |
| 10/23/1990 | US4965345 Disazo dyes; coloring polymeric material |
| 10/16/1990 | US4963189 Disazo dyes |
| 10/10/1990 | EP0391170A1 Process for dyeing paper |