| 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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| 09/25/1990 | US4959172 Liquid crystal composition containing a pleochroic azo type compound |
| 08/16/1990 | EP0382227A1 Ink, and recording process making use of it |
| 08/08/1990 | EP0381228A2 Ink, and recording process using the same |
| 07/12/1990 | DE3942938A1 Disazo-dispersionsfarbstoffe Disazo disperse dyes |
| 04/11/1990 | EP0362637A1 Thiophene azo dyes with a coupling component of the thiazole series |
| 03/28/1990 | EP0202341B1 Dichroic azo dyes |
| 03/20/1990 | US4910299 Azo group attached to phenyl ring |
| 03/13/1990 | US4908435 Aromatic disazo compounds having strong infra-red absorption |
| 03/13/1990 | US4908062 Water-soluble dye |
| 02/28/1990 | EP0356080A2 Anionic dye |
| 02/14/1990 | EP0354872A2 Trisazo dyes and process for dyeing paper |
| 01/03/1990 | EP0349486A2 Azo dyes, their preparation and their use |
| 11/07/1989 | CA1262723A1 Trisazo black dyes |
| 07/26/1989 | EP0325041A2 Water-soluble dye |
| 06/27/1989 | CA1256429A1 Disazo orange dyes for nylon |
| 06/20/1989 | US4841037 Amino sulfonaphtholtrisazo compounds and recording liquids containing the same |
| 06/20/1989 | US4841036 Phenyl acothienylthiazoaniline dis-azo dye for polyester fibers |
| 06/20/1989 | US4841034 Color- and washfast on cotton or blends |
| 06/06/1989 | US4837269 Fiber-reactive disazo dyes |
| 06/06/1989 | US4836827 Tris-azo black or grey dyes for leather or pelts |
| 05/24/1989 | EP0316927A2 Neutral-black dye-donor element for thermal dye transfer |
| 05/23/1989 | US4833235 Sulfo group-containing disaz compounds having a heterocyclic coupling component radical |
| 04/11/1989 | US4820309 1:2-chromium complex dyes for tanned leather |
| 02/02/1989 | DE3724037A1 Navy disazo dyes |
| 01/31/1989 | US4801696 Polyester blends, colorfastness |
| 01/05/1989 | DE3720736A1 Method, reagents and equipment for the simple determination of non-enzymatically glycosylated proteins in body fluids |
| 12/27/1988 | US4793860 Aqueous ink composition |
| 12/07/1988 | EP0293942A2 Liquid crystal composition containing a pleochroic azo type compound |
| 11/15/1988 | US4784668 Dyes for inks |
| 11/09/1988 | EP0290384A2 Anionic disazo dyes |
| 11/02/1988 | EP0289458A2 Anionic disazo dyes |
| 09/20/1988 | US4772292 Mixture of yellow disperse dyestuffs containing pyridone disazo dye |
| 09/15/1988 | DE3805746A1 1:2 chromium complex dyes |
| 09/13/1988 | US4770809 Electronic displays |
| 08/31/1988 | EP0280434A2 Aromatic disazo compound |
| 08/16/1988 | US4764175 Metal-free monoazo and disazo compounds having a 1-hydroxy-5,6-, 7- or 8- substituted 1,3,5-triazinylamino-3- or 4 sulfonic acid coupling component radical and 1:1 copper complexes |
| 07/26/1988 | US4760133 Process for preparing disazo dyes with bis-anilino methane coupling component |
| 06/28/1988 | US4753922 Neutral-black dye-donor element for thermal dye transfer |
| 06/21/1988 | US4752337 Recording liquid for ink jet recording systems |
| 06/15/1988 | EP0271444A2 Disperse dyes |
| 06/07/1988 | US4749784 Alkanol substituted disazo orange dye for nylon |
| 05/11/1988 | EP0266569A2 Solvent dyes with carboxylic-acid functions |
| 05/10/1988 | US4743581 Thermal transfer printing |
| 04/12/1988 | US4737310 Liquid crystal composition containing azo dyes |
| 03/30/1988 | EP0262095A2 Anionic disazo compunds |
| 03/29/1988 | US4734218 Dichroic azo dyestuffs and liquid crystal composition containing said dyestuffs |
| 03/23/1988 | CN86105522B Synthetic method for a kind of cyanic water-soluble dye |
| 02/24/1988 | CN86105522A Synthetic method for a kind of cyanic water-soluble dye |
| 02/09/1988 | US4724001 For ink jets |
| 01/26/1988 | US4721779 Electrooptical apparatus |
| 01/12/1988 | US4719051 Oxygenation |
| 01/07/1988 | EP0251120A2 Disazothiophene dyes |
| 12/16/1987 | EP0249127A2 Recording fluid for ink jet painting systems |
| 12/02/1987 | EP0247618A2 Trisazo dyes containing heterocycles |
| 10/27/1987 | US4703113 Water-soluble triazine black dyes free from cellulose reactive groups and suitable for use in inks |
| 10/20/1987 | US4701525 Polyazo dyestuffs having high UV absorption |
| 08/25/1987 | US4689403 Disazo pigment from condensation of carboxylic acid chloride with 2,5-dichloro-1,4-phenylene diamine |
| 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 |
| 07/21/1987 | US4681699 Bisazo dyes and their use in liquid crystalline materials |
| 06/30/1987 | US4676923 Dichroic dyestuffs for liquid crystal and liquid crystal composition |
| 06/02/1987 | US4670548 Sulfo-group-containing trisazo dyestuffs |
| 06/02/1987 | CA1222510A1 Azo compounds |
| 05/26/1987 | US4668050 Method of using liquid crystal device comprising dichroic dye and liquid crystal device |
| 05/19/1987 | US4667020 Aromatic disazo dyes and liquid-crystalline materials containing these dyes |
| 05/19/1987 | US4667019 Azo dyes containing a triazolyl group for use in liquid crystalline materials |
| 04/15/1987 | EP0218397A2 Thermal transfer printing |
| 04/15/1987 | EP0218174A2 Azo dyes and liquid-crystal materials containing azo dyes |
| 03/10/1987 | US4649194 1:2 metal complexes of a disazo compound having a 5-hydroxy-1-(aminophenyl)pyrazole coupling/diazo component radical and disazo compound having a 1-amino-8-hydroxynaphthalene coupling/diazo component |
| 01/20/1987 | US4638055 Leather, cobalt complexes |
| 01/06/1987 | US4634764 Non-azo and azo compounds containing at least one 4,6-diamino-1-substituted-5-substituted carbamoylpyrid-2-one group |
| 11/26/1986 | EP0202341A1 Dichroic azo dyes |
| 11/18/1986 | US4623719 For cellulose or cellulose fibers |
| 11/12/1986 | EP0201458A2 Trisazo black dyes |
| 11/04/1986 | US4621136 Phenyl azo cyanothienyl azo anilino dyestuffs |
| 10/08/1986 | EP0196574A2 4,4'-Diaminodiphenyl compounds, process for their preparation and their use |
| 10/01/1986 | EP0196025A2 Process for the preparation of 4,4'-diaminodiphenyl compounds, and their use |
| 09/17/1986 | EP0194377A2 Disazo orange dyes for nylon |
| 09/17/1986 | CN85102763A Synthesis of black dye for silk staining |
| 09/09/1986 | US4610803 Electronics |
| 09/02/1986 | US4609609 Ultraviolet |
| 08/27/1986 | EP0192213A1 Mixture of yellow disperse dyes |
| 08/27/1986 | EP0192067A1 Disazo dyes |
| 07/15/1986 | US4600527 Azo dyes, mult&color, photochromic |
| 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 |
| 06/05/1986 | WO1986003215A1 Dichroic azo dyes |
| 05/27/1986 | US4591635 Dyes for leather or paper |
| 05/13/1986 | US4588517 Liquid crystal composition |
| 04/16/1986 | EP0177978A2 Naphthol amine derivatives |
| 04/02/1986 | EP0176195A2 Water-soluble dye |
| 03/26/1986 | EP0175271A2 Disazo dyes and their use in liquid crystal materials or in dyeing synthetic polymers or fibres |
| 03/11/1986 | US4575482 Brilliance, lightfastness |
| 02/25/1986 | CA1200970A1 Helichromic-smectic liquid crystal compositions and display cells |
| 01/29/1986 | EP0169808A2 UV-absorber compounds, method for their preparation and their use as image dyes in photographic materials for the silver dye-bleaching process |
| 01/21/1986 | US4565424 Asymmetric dichroic dye molecules having poly(arylazo) linking groups, a bis-substituted aryl thiazyl end group, and another end group |
| 12/10/1985 | US4557761 Azo dye and dispersant or dissolving medium |
| 12/03/1985 | US4556707 Triazole-group-containing disazo reactive dyestuff |
| 11/06/1985 | EP0160226A2 Disazo dyes |
| 10/15/1985 | US4547566 Copper, cobalt, nickel and iron complexes of disazo dyes |
| 09/25/1985 | EP0155507A2 Azo dyes and liquid crystalline materials containing these dyes |
| 09/03/1985 | US4539009 Dyestuff mixture |