| Patents for C09B 33 - Disazo or polyazo dyes of the types a k b, a b k c, or the like, prepared by diazotising and coupling (1,032) |
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| 01/29/1992 | EP0468648A1 Anionic bis(hydroxynaphthylamino) disazo dyestuffs and use thereof for ink jet printing |
| 01/29/1992 | EP0468647A1 Anionic compounds |
| 01/28/1992 | US5084435 Dye-donor element for use in thermal dye sublimation transfer |
| 01/21/1992 | US5082496 Ink, and ink-jet recording method and apparatus employing the ink |
| 01/08/1992 | EP0465420A1 Azo dyestuffs |
| 12/31/1991 | US5077396 Azo compounds containing two 6-hydroxypyrid-2-one coupling component radicals the nitrogen atoms of which are linked by a biscationic radical |
| 12/10/1991 | US5071967 Disazo compounds containing long-chain alkyl ester radicals or alkylamide radicals |
| 09/18/1991 | EP0446620A1 Ink, and ink-jet recording method and apparatus employing the ink |
| 08/28/1991 | EP0443386A2 Ink, and ink-jet recording method and apparatus employing the ink |
| 08/21/1991 | EP0442846A2 Disazo compounds with long-chain alkylester- or alkylamide moieties |
| 08/06/1991 | US5037967 N-phenoxyalkylene anilines as coupling components |
| 07/09/1991 | US5030247 Mixtures of disazo compounds containing two phenyl diazo component radicals having one or two (C1-4 alkoxy)carbonyl groups and a bis-acetoacetamido-arylene coupling radical |
| 06/27/1991 | DE4039590A1 Modified dis-azo pigment has improved nuance, stability, dispersibility |
| 06/25/1991 | US5026831 Water-insoluble disazo colorants having hetero-bicyclic methylene-active compounds as coupling component |
| 06/19/1991 | EP0432313A1 Dye-donor element for use in thermal dye sublimation transfer |
| 04/10/1991 | EP0421927A2 Preparation process of mono- and polyazo-dyes |
| 04/09/1991 | US5006128 Substituted 2,4-di[4'-(disulfonaphth-2"-ylazo)phenylamino]-6-amino-1,3,5-triazines |
| 02/26/1991 | US4996302 Process for the preparation of polyazo dyes |
| 01/29/1991 | US4988804 Polyazo dyes obtained by successive coupling of H-acid and two further anilinic diazo components on resorcinol or the like |
| 01/16/1991 | EP0408192A1 Solvent soluble dye |
| 01/08/1991 | US4983492 Positive dye photoresist compositions with 2,4-bis(phenylazo)resorcinol |
| 08/14/1990 | US4948688 Sensitivity, durability |
| 08/08/1990 | EP0381229A1 Ink, and recording method making use of same |
| 08/07/1990 | US4946948 Coloring polyolefins |
| 06/23/1990 | CA2006414A1 Stilbene dyestuffs and light-polarizing films or sheets containing stilbene dyestuffs |
| 04/17/1990 | US4917731 Water-soluble black trisazo dyestuffs |
| 04/12/1990 | DE3932566A1 New basic pyridone dis to tetrakis and dyestuff cpds. - used for dyeing e.g. leather, cellulose fibre and paper |
| 03/20/1990 | US4910299 Azo group attached to phenyl ring |
| 03/14/1990 | EP0358604A2 Disazo compounds containing long-chain alkyl, ester or alkylamino rests |
| 03/07/1990 | EP0357560A2 Anionic triazinylamino-disazo dyes |
| 02/28/1990 | EP0355601A2 Polyazo dyes and their intermediate products |
| 12/13/1989 | EP0345714A2 Dyed photoresist compositions and process |
| 09/21/1989 | DE3907163A1 Anionische disazofarbstoffe Anionic disazo dyes |
| 09/12/1989 | US4866113 Compounds useful as pigments containing one or more 2,2,6,6-tetraalkylpiperidine groups |
| 07/26/1989 | EP0324943A2 Water soluble black trisazo dyes |
| 07/25/1989 | US4851516 Disazo, for cellulose |
| 07/05/1989 | EP0322640A2 Azo dyes |
| 06/28/1989 | EP0322357A2 Process for the preparation of polyazo dyes |
| 06/13/1989 | US4838943 Compounds useful as pigments containing one or more 2,2,6,6-tetraalkylpiperidine groups |
| 05/24/1989 | EP0316649A2 Water insoluble azo colouring agents, their preparation and use |
| 05/17/1989 | EP0316278A2 Polyazo dyes |
| 02/28/1989 | US4808503 Sensitivity, durability |
| 09/13/1988 | US4770809 Electronic displays |
| 06/15/1988 | EP0271444A2 Disperse dyes |
| 06/15/1988 | EP0270685A1 Photosensitive material for electrophotography |
| 05/26/1988 | DE3638763A1 Pigments containing piperidyl groups |
| 04/12/1988 | US4737190 Including a humectant; anti fouling agents |
| 03/31/1988 | DE3632039A1 Disazo pigments |
| 03/17/1988 | DE3630717A1 Azo pigment dyes |
| 01/12/1988 | US4719293 (2,5-diisopropoxycarbonylbenzene-azo-2-hydroxy-3-carbamoyl naphthalene) pigment |
| 12/17/1987 | WO1987007736A1 Photosensitive material for electrophotography |
| 12/10/1987 | DE3612148A1 Disazo pigments |
| 12/03/1987 | DE3618216A1 Azo pigments |
| 11/12/1987 | DE3615232A1 New azo compounds |
| 10/27/1987 | US4703113 Water-soluble triazine black dyes free from cellulose reactive groups and suitable for use in inks |
| 10/14/1987 | EP0241419A2 Pigments containing piperidyl groups |
| 09/01/1987 | CA1226278A1 Water-soluble triazine compounds |
| 08/11/1987 | US4686285 Basic azo and non-azo compounds having one or two disubstituted 1,3,5-triazine rings each of which is linked through a bridging radical to the 1-position of a pyrazole ring |
| 06/30/1987 | US4677200 Amino compounds derived from 5-acetoacetylamino-benzimidazolones |
| 06/02/1987 | US4670547 Tetrakisazo compounds having two 1-hydroxy-3- or 4-sulfo-6- or 7-amino- or substituted amino-naphthalene coupling component radicals the amino or substituted amino groups of which are linked 1,3,5-triazine rings |
| 04/15/1987 | EP0218174A2 Azo dyes and liquid-crystal materials containing azo dyes |
| 03/31/1987 | US4654384 Basic water-soluble bis-(β-azo-α-naphtholamino)-triazine compounds |
| 03/04/1987 | EP0212412A2 Polyazo dyes |
| 02/25/1987 | EP0211272A2 AZO compound and colored composition containing same |
| 01/20/1987 | US4638055 Leather, cobalt complexes |
| 08/20/1986 | EP0191126A1 Azo compounds |
| 06/10/1986 | US4594410 Azo compounds containing both sulfo groups and basic or cationic groups which compounds are in metal-free or 1:1 metal complex form |
| 04/15/1986 | US4582896 1:2-metal complex dyes containing one atom of chromium or cobalt and two azo dyes each formed by coupling two diazo compounds to resorcinol |
| 04/02/1986 | EP0176195A2 Water-soluble dye |
| 02/25/1986 | CA1200970A1 Helichromic-smectic liquid crystal compositions and display cells |
| 01/21/1986 | CA1199632A1 Water-soluble disazo compounds |
| 01/07/1986 | US4563520 Metal complexes of dis- or trisazo compounds containing a middle component twice substituted by hydroxy and/or amino |
| 01/07/1986 | US4563519 Coatings, plastics, printing inks |
| 12/31/1985 | US4562249 Bis(4-((chloro substituted phenyl)azo)anilino methylenes |
| 12/31/1985 | US4562247 Used to dye textiles, paper, and leather |
| 12/31/1985 | US4562131 Photoreceptor containing a trisazo compound for use in electrophotography |
| 12/10/1985 | US4558121 Sulfoethylaminosulfonyl substituted disazo dyes |
| 10/23/1985 | EP0158889A2 Amino azo compounds, process for their preparation and their use |
| 10/15/1985 | US4547566 Copper, cobalt, nickel and iron complexes of disazo dyes |
| 10/01/1985 | US4544736 Organic pigment |
| 09/10/1985 | US4540775 1,4-Di-[2'-(2",4"-dichlorophenylazo)acetoacetamido]-2,5-dimethylbenzene |
| 08/13/1985 | US4535044 Photosensitive material for electrophotography containing photosensitive layer incorporating pentakisazo pigment |
| 06/04/1985 | US4521216 Disazo dyes |
| 05/08/1985 | EP0140252A2 Polyazo dyes |
| 05/08/1985 | EP0034174B1 Hydrogel implant article and method |
| 04/30/1985 | US4514045 Helichromic-smectic liquid crystal compositions and display cells |
| 04/16/1985 | US4511507 Monoazo compound having both monochlorotriazinyl and vinylsulfone type reactive groups |
| 01/15/1985 | US4493798 For polyamides, wool, and leather |
| 01/15/1985 | CA1181066A1 Monoazo and disazo dyestuffs containing aminoalkylenesulfonamido moieties |
| 01/08/1985 | US4492654 Blue or black disazo dyes |
| 01/08/1985 | US4492653 Water-soluble trisazo dyestuffs on the basis of a combination of naphthalene-, diphenylamine- and pyrazolone derivatives |
| 01/01/1985 | US4491544 Disperse dyes, polyesters, inks |
| 01/01/1985 | US4491543 Dis-, tris-, and tetrakisazo compounds containing resorcinol, sulfonylamino, and two or three sulfonic acid groups |
| 12/04/1984 | US4486347 Flame retarding antimicrobial halogenated azo dyestuffs |
| 11/14/1984 | EP0125128A1 Photoreceptor for use in electrophotography |
| 11/06/1984 | CA1177482A1 Organic compounds |
| 08/22/1984 | EP0116513A2 Water soluble triazine compounds |
| 08/15/1984 | EP0115705A2 Monoazo compound having both monochlorotriazinyl and vinylsulfone type reactive groups |
| 05/02/1984 | EP0107492A2 Helichromic-smectic liquid crystal compositions and display cells |
| 05/01/1984 | CA1166631A1 Bis aryl-azo derivatives of 2,3-naphthalenediol and electrographic liquid developer compositions containing them |