| Patents for C09B 51 - Nitro or nitroso dyes (412) |
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| 09/16/1993 | WO1993018093A1 Colouring agents for natural and synthetic fibres |
| 09/16/1993 | WO1993017999A1 Direct-dyeing colouring agents for natural and synthetic fibres |
| 09/15/1993 | EP0560406A1 Process for the preparation of 2,5-diamino-6-nitro-pyridine derivatives and new 2,5-diamino-6-nitro-pyridine derivatives |
| 09/09/1993 | DE4206537A1 Neue faerbemittel fuer fasern natuerlichen ursprungs und synthetische fasern New coloring agents for fibers and synthetic fibers natural origin |
| 09/09/1993 | DE4206536A1 Direktziehende farbstoffe fuer fasern natuerlichen ursprungs und synthetische fasern Substantive dyes for natural fibers and synthetic fibers origin |
| 09/02/1993 | DE4206049A1 4-Amino-2-nitro-di:phenyl-amine carboxylic acid or salt - for use as dyestuff for synthetic, animal or vegetable fibre, acting as disperse and direct dyestuff |
| 08/11/1993 | EP0554904A2 Organosilicon polymers, and dyes, exhibiting nonlinear optical response |
| 06/09/1993 | EP0460128B1 Agent and process for the oxidative dyeing of hair |
| 03/17/1993 | EP0532039A1 N1-trifluoroalkyl substituted 2-nitro-p-phenylenediamine dyes |
| 02/16/1993 | US5186716 N1 trifluoroalkyl substituted 2-nitro-p-phenylenediamine dyes and hair dyeing compositions and methods thereof |
| 01/27/1993 | EP0524215A1 Oxidation pigments |
| 01/20/1993 | EP0460127B1 Hair toning agent in foam form |
| 11/17/1992 | US5163970 Hair dyes |
| 10/15/1992 | WO1992017156A1 Hair colourants with direct dyes |
| 10/08/1992 | DE4110995A1 Haarfaerbemittel mit direktfarbstoffen Hair dyes with direct dyes |
| 10/06/1992 | CA2107796A1 Hair colorants with substantive dyes |
| 09/28/1992 | EP0592396A4 Benzoxazine dyes. |
| 09/08/1992 | US5145482 Hair dye compositions based on 2,5-diamino-6-nitropyridine derivatives |
| 07/21/1992 | US5132461 Process for the production of 4-[ethyl-(2'-hydroxyethyl)-amino]-1-[(2'-hydroxyethyl)-amino]-2-nitro-benzene |
| 07/14/1992 | CA1305184C Substituted 2-nitrometaphenylene-diamines, a process for their preparation and their use in dyeing keretinic fibers, particularly human hair |
| 05/27/1992 | EP0487205A2 Compositions containing nitroaniline dyes having a carbamide substituent group |
| 05/26/1992 | US5116958 Disperse dyes which are convertible into a thermomigration fast form |
| 02/25/1992 | US5091581 Reacting diaminonitrobenzene with chloroalkyl chloroformate |
| 02/18/1992 | US5089025 Hair dye compositions and certain 1,2,3,4-tetrahydronitroquinoxalines useful therein |
| 02/04/1992 | US5085666 Nitroanilines and hair-dyeing compositions in which they are present |
| 12/12/1991 | DE4018335A1 Compsn. for dyeing hair - contains 2-amino-4-halo-6-nitrophenol as dye and 2-amino-4-fluoro-6-nitrophenol as new cpd. |
| 12/04/1991 | EP0459901A1 Process for dyeing of keratinic fibres using 2,6-dimethyl-1,4-diaminobenzene and/or 2,6-diethyl-1,4-diaminobenzene in acid medium and compositions using this process |
| 12/04/1991 | EP0459900A1 Process for dyeing of keratinic fibres with 2,4-diamino-1,3-dimethoxybenzene in an acid medium and composition using this process |
| 12/01/1991 | CA2043673A1 Process for dyeing keratinic fibers with 2,4-dimethoxybenzene-1,3-diamines at acid ph; compositions used therefor |
| 12/01/1991 | CA2043623A1 Process for dyeing keratinic fibers with 2,6-dimethylbenzene-1,4-diamine and/or 2,3-dimethylbenzene-1,4-diamine and/or 2,6-diethylbenzene-1,4-diamine in an acid medium; compositions used therefor |
| 11/26/1991 | US5067967 Nitro dyes for oxidation color dyes |
| 11/26/1991 | US5067966 2-amino-6-chloro-4-nitro-phenol derivatives, process to their production and hair dyes containing those compounds |
| 10/17/1991 | WO1991015188A1 Oxidation pigments |
| 10/08/1991 | US5055110 Hair dyes |
| 08/27/1991 | US5042988 Compositions containing nitroaniline dyes having a carbamide substituent group |
| 08/20/1991 | US5041143 N,N'-disubstituted nitro-para-phenylenediamines, and dyeing compositions containing the same |
| 07/11/1991 | WO1991009588A1 Hair toning agent in foam form |
| 07/11/1991 | WO1991009587A1 Agent and process for the oxidative dyeing of hair |
| 07/09/1991 | US5030241 Providing yellow and orange shades, with or without oxidation agent |
| 06/27/1991 | DE3942315A1 Schaumfoermiges haartoenungsmittel Schaumfoermiges haartoenungsmittel |
| 06/27/1991 | DE3942294A1 Mittel und verfahren zum oxidativen faerben von haaren Means and methods for oxidative dyeing of hair |
| 06/25/1991 | US5026401 Dyeing compositions for kerating fibres based on nitroanilines and nitroanilines for use therein |
| 06/18/1991 | US5024673 Nitroaniline dyes with a cyano substituent group |
| 05/30/1991 | WO1991007394A1 Benzoxazine dyes |
| 05/15/1991 | EP0426719A1 A hair dye |
| 05/14/1991 | US5015769 Hair dyes formed by reaction of an alcohol with a phenol in the presence of a strong base for etherification followed by amination |
| 04/16/1991 | CA1283125C Keratinic fiber dye composition for human hair having and halogenated nitroaniline base, dying process using the said composition and novel halogenated 2-nitroaniline used |
| 04/16/1991 | CA1283124C Keratinic fiber dye composition having a 2-nitro-metaphenylenediamine base, process for its preparation and novel 2-nitro-metaphenylenediamine used |
| 03/06/1991 | EP0415816A1 Polymers having non-linear optical properties |
| 02/12/1991 | US4992586 Dehalogenation of a halonitrobenzene compound |
| 01/01/1991 | US4981486 Washfast, lightfast; for bleached or permed hair |
| 12/25/1990 | US4980158 Nitroaniline dyes with a cyano substituent group |
| 12/13/1990 | WO1990014818A1 Oxidation hair colorant |
| 12/05/1990 | EP0400330A1 Oxidation hair dyes |
| 12/04/1990 | US4975093 Hair dyeing compositions containing 2,6-dinitro-phenol-derivatives |
| 11/27/1990 | US4973757 Process for the preparation of nitroanilines |
| 10/10/1990 | EP0391662A1 Nitroaniline dyes with a cyano substituent group |
| 08/21/1990 | US4950302 Process for the production of 2,5-diamino-6-nitro-pyridine derivatives, their use in hair dye compositions and new 2,5-diamino-6-nitropyridine derivatives |
| 07/18/1990 | EP0378510A2 Disperse dyes |
| 07/12/1990 | WO1990007557A1 2-amino-6-chlor-4-nitrophenol derivatives, process for obtaining them and hair dye containing these compounds |
| 07/04/1990 | EP0376047A1 2-Amino-6-chloro-4-nitrophenol derivatives, process for their preparation and hair dyeing agent containing the same |
| 06/26/1990 | CA1270854A2 Intermediary compounds for the preparation of 6- halogenated nitrometaphenylenediamines |
| 06/05/1990 | US4931066 Hair dye mixture of direct dye and xanthine derivative |
| 05/01/1990 | US4921504 4-(N-ethyl-N-2-hydroxyethyl)-amino-1-(2 hydroxyethyl)-amino-2-nitrobenzene and compositions for dyeing hair containing the same |
| 03/20/1990 | US4910341 Process for preparing N,N'-disubstituted nitro-para-phenylenediamines, N,N'-disubstituted nitro-para-phenylenediamines, and intermediate oxazolidones |
| 03/06/1990 | CA1266488A1 6-halogenated nitrated metaphenylenediamines and their use for dyeing keratinic materials |
| 02/27/1990 | US4904276 Nitroaminophenols, the process for preparation thereof and their use in dyeing keratinous fibres, and new intermediate nitroaminobenzenes and their use in dyeing keratinous fibres |
| 02/20/1990 | US4902787 Method for producing lightfast disperse dyestuffs containing a build-in photostabilizer [molecule] compound |
| 02/13/1990 | US4900869 Process for the production of 4-[ethyl-(2'-hydroxyethyl)-amino]-1-[(2'-hydroxyethyl)-amino]-2-nitrobenzene |
| 02/13/1990 | US4900327 Preparations containing substantive nitrodiphenylamine derivative hair dyes |
| 02/08/1990 | WO1990001050A1 A hair dye |
| 02/08/1990 | WO1989001473A3 Process for manufacturing 2,5-diamino-6-nitro-pyridine derivatives, their use in hair dyes, and new 2,5-diamino-6-nitro-pyridine derivatives |
| 02/07/1990 | EP0353531A1 Hair dye |
| 01/31/1990 | EP0352489A2 Use of 2,6-dinitrophenol derivatives in hair dyeing compositions |
| 01/30/1990 | CA1265058A1 Tinctorial composition containing 5-nitrovanillin |
| 12/19/1989 | US4888445 New 2,4-dinitro- or 2-amino-4-nitro- or 2-nitro-4-amino-6-hydroxyalkylanilines, the process for preparation thereof and their use in dyeing keratinous fibres, and especially human hair |
| 11/02/1989 | WO1989010384A1 Lightfast disperse dyestuffs |
| 09/05/1989 | US4863482 Substituted 2-nitro metaphenylenediamines, a process for their preparation and their use in dyeing keratinous fibers, in particular human hair |
| 08/22/1989 | US4859206 Hair dye preparations containing nitrodiphenylamine derivative |
| 08/22/1989 | CA1258681A1 2-amino-4-nitro-6-hydroxyalkylanilines; process for preparing the same and their use for dyeing keratinic fibers |
| 08/22/1989 | CA1258635A1 Halogenated metaphenylendiamine dyes for keratinic fibers |
| 07/25/1989 | US4851575 Sulfonating o-nictrichlorobenzene, forming high purity 4-chlor o-3-nitrobenzenesulfonyl chloride, condensing with amines |
| 07/18/1989 | CA1257611A1 Dinitro-2,4-hydroxyalkyl-6 anilines, process for their preparation and utilisation as dye for keratinic fibres and specially human hair |
| 07/04/1989 | US4845293 Dyeing composition containing halogenated 2-nitroanilines |
| 05/30/1989 | US4835314 2-nitroaniline derivatives |
| 05/30/1989 | CA1254908A1 2-nitro-4-amino-6-hydroxyalkyl-anilines; process for preparing the same and their use for dyeing keratinic fibers and especially human hair |
| 05/23/1989 | US4832697 Hair dye preparations containing substantive nitrodiphenylamine derivatives |
| 05/03/1989 | EP0314162A2 Sulfur-containing nitroamino-benzene dyes, process and hair dye compositions |
| 04/25/1989 | CA1253082A1 Tinctorial composition for keratinic fibers containing at least one co-solubilized n-substituted 2-nitro paraphenylenediamine; process for dyeing the corresponding keratinic fibers |
| 04/18/1989 | CA1252725A1 Dyeing composition for keratinic fibers comprising at least one cosolubilised n-substituted nitro-2 paraphenilenediamine and process for dyeing keratinic fibers |
| 03/28/1989 | CA1251738A1 Tinctorial composition for keratinic fibers containing at least one co-solubilized n-substituted 2-nitro-paraphenylenediamine; related keratinic fibers dyeing processes |
| 02/23/1989 | WO1989001473A2 Process for manufacturing 2,5-diamino-6-nitro-pyridine derivatives, their use in hair dyes, and new 2,5-diamino-6-nitro-pyridine derivatives |
| 02/22/1989 | EP0303878A2 2,5-diamino-nitro-6-pyridine derivatives containing hair dyeing agents |
| 02/22/1989 | EP0303826A1 Substituted 2-nitro metaphenylene diamines, process for their preparation and their use in dyeing keratinous fibres and especially human hair |
| 01/24/1989 | US4799934 Sulfur-containing nitroaminobenzene dyes, process and hair dye compositions |
| 01/10/1989 | US4797129 Dye compositions for keratinous fibres containing 2-nitro-metaphenylenediamines |
| 12/14/1988 | EP0184061B1 4-(n-ethyl,n-2'-hydroxyethyl)-amino-1-(2"-hydroxyethyl)-amino-2-nitrobenzene and hair dyeing agents |
| 12/13/1988 | CA1246611A1 Nitrated benzene derivative dye; process for preparing the same and use thereof for dyeing keratinic fibers |
| 11/17/1988 | WO1988008696A1 Use of 2,6 dinitro-aniline derivatives in hair tinting agents and new derivatives of 2,6 dinitro-aniline |
| 11/09/1988 | EP0289782A1 Use of 2,6-dinitroanilin derivatives in hair dyeing compositions and new 2,6-dinitroanilin derivatives |