| 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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| 02/16/1982 | CA1118159A1 Dyestuff formulations |
| 02/10/1982 | EP0045354A1 A method of dyeing and printing hydrophobic fibrous materials, and azo dyestuffs suitable therefor |
| 02/02/1982 | US4313872 Azo coupling in two-phase water-alcohol mixtures |
| 01/20/1982 | EP0043904A2 Mixtures containing a dyestuff, dyestuffs and their use in liquid crystal mixtures |
| 01/05/1982 | CA1115579A1 Color diffusion transfer photographic element containing an azo yellow dye image - forming compound |
| 12/15/1981 | US4305874 Aniline azo dyes from 1,2,3,4-tetrahydroquinoline and 2,3-dihydro-1,4-benzoxazine couplers containing sulfate alkyl groups |
| 11/24/1981 | CA1112810A1 Process for the dyeing or printing of polyester fibers |
| 11/18/1981 | EP0040172A2 Azo dyestuffs, methods for their preparation and their use as colouring agents in photographic materials in the silver dyestuff bleaching process, and the said photographic materials containing these azo dyestuffs |
| 11/18/1981 | EP0040171A2 Azo dyestuffs, methods for their preparation and their use as colouring agents in the silver dyestuff bleaching process |
| 11/04/1981 | EP0039054A1 Water-insoluble azo dyes, process for their production and their application |
| 10/20/1981 | US4295889 Storage stability |
| 10/20/1981 | CA1111167A1 Process for the mass colouration of polyesters |
| 10/20/1981 | CA1111024A1 Water-insoluble azo dyes |
| 10/14/1981 | EP0037465A2 Amino azo compounds |
| 10/13/1981 | US4294755 Pigments containing pyrazolo quinazolone radicals |
| 10/13/1981 | CA1110407A1 Dyeing and printing of water-swellable cellulose material and blends thereof with synthetic fibres, by means of disazo dyes derived from amino-pyrazole |
| 10/06/1981 | US4293306 Process for the dyeing and printing of hydrophobic synthetic organic fiber materials with water-insoluble azo dyestuffs |
| 09/23/1981 | EP0036081A1 Azo dyestuffs as well as their preparation and their use in dyeing synthetic fibres |
| 09/22/1981 | CA1109463A1 Dispersion azoic dyes |
| 09/16/1981 | EP0035671A1 Water-insoluble azo dyestuffs, methods for their preparation and their use in dyeing and printing synthetic hydrophobic fibre materials |
| 09/02/1981 | EP0034725A2 Dyestuffs containing imidazolylethylene groups and their use |
| 09/01/1981 | US4287121 Water-soluble polyfluoro acid azo dyestuffs |
| 08/25/1981 | US4285864 Disulfonic phenyl-azo-naphthyl-azo-phenyl alkoxy dyes for polyamides |
| 08/25/1981 | US4285860 Leather, nylon, cotton, paper; colorfastness; black |
| 08/11/1981 | US4283331 Azo dyes, their preparation and use |
| 07/21/1981 | US4279814 Salicyl phenyl naphthyl trisazo di and trisulfonic developed direct black dyes |
| 06/24/1981 | EP0030656A1 Disazo dyestuffs and their use in dyeing polyesters and cellulose fibres |
| 06/16/1981 | US4273707 Monoazo and disazo dyes containing at least one sulfo group and at least two basic or cationic groups |
| 06/03/1981 | EP0029545A1 Disazo dyestuff, process for its preparation and its use |
| 04/28/1981 | US4264495 2-Thienyl azo dyestuff compounds |
| 04/07/1981 | US4260559 Substituted urea, oleum |
| 04/07/1981 | US4260540 Spin dyeing polyacrylonitrile |
| 04/01/1981 | EP0026154A1 Process for preparing 4,4'-dinitrostilbene-2,2'-disulfonic acid and its salts and its use |
| 03/24/1981 | US4257942 New water-insoluble azo dyes |
| 03/10/1981 | US4255327 Trisazo dyes, diazotization of aminobenzene or naphthylamine compounds, coupling to m-phenylenediamine sulfonic acid |
| 02/17/1981 | CA1095898A1 Preparation of azo dyestuffs |
| 02/10/1981 | US4250090 2-Amino-5-arylazoarylazothiazole compounds |
| 02/10/1981 | US4249902 Dyestuff formulations |
| 02/04/1981 | EP0023309A1 Disazo dyestuffs of the aminopyridine or aminopyrimidine series and their use in dyeing textile material containing cellulose |
| 02/03/1981 | US4248777 Process for preparing Acid Red 151 |
| 02/03/1981 | US4248773 Acetoacetamide diazo dyestuffs |
| 01/27/1981 | US4247460 Disazo dyestuff sulphuric acid ester |
| 01/21/1981 | EP0022512A1 Azo compounds containing phosphorus, their preparation, and their use as pesticides, as light sensitive materials and as starting materials for the synthesis of pyrazolones |
| 01/07/1981 | EP0021837A1 Metallisable trisazo black dyestuffs and mixtures thereof, their preparation and use in dyeing cellulosic fibres |
| 12/23/1980 | CA1092099A1 Azo dye compounds |
| 12/16/1980 | CA1091654A1 Azo dyestuffs |
| 12/10/1980 | EP0019846A2 Tanning agents of the azo series, their preparation and their use in the simultaneous tanning and dyeing of leather, and preparations containing them |
| 11/18/1980 | US4234482 Substituted 3-carbalkoxy 4-alkylamino-azobenzene compound as disperse dyestuffs for synthetic fibers |
| 11/12/1980 | EP0018590A2 Process for dyeing textile material containing hydroxyl groups, and reactive disazo dyestuffs of the dichlorotriazine series |
| 11/04/1980 | US4231746 Dyeing of cellulose-containing textile material and novel dyes for use therein |
| 10/29/1980 | EP0017841A1 Polyazo dyestuffs and their use in dyeing fibrous materials containing nitrogen |
| 09/30/1980 | US4225493 Disazo dyestuffs derived from three carbocyclic components including a terminal component substituted with sulfo and alkoxy |
| 09/30/1980 | US4225489 Heterocyclic azo dyes and pigments containing 4-quinazolinone moieties |
| 09/23/1980 | US4224220 Azo dyes |
| 09/23/1980 | US4224025 Process for the dyeing and printing of paper materials in different hues using a single coupling component |
| 09/09/1980 | US4221562 Quaternary ammonium substituted, with glutaraldehyde or glyoxal, for printing cellulose |
| 09/02/1980 | CA1084910A1 Azo pigments and process for their production |
| 08/20/1980 | EP0014451A1 Method for dyeing and printing synthetic hydrophobic organic fibre materials with water insoluble azodyestuffs |
| 08/20/1980 | EP0014378A1 Tris- or tetrakisazo-dyestuffs and their use for dyeing leather |
| 08/19/1980 | US4218372 Disperse dyes |
| 08/12/1980 | US4217102 Polyamides dyed with rubine disazo acid dyes and process therefore |
| 07/15/1980 | US4212647 Water-insoluble azo dyestuffs which are derivatives of 1-aryl-3-trifluoromethyl-5-pyrazolones |
| 07/08/1980 | US4211698 Disazo dyes containing an acetoacetanilide middle component |
| 07/01/1980 | US4210414 Dye mixtures for coloring mineral oil products |
| 06/25/1980 | EP0012354A1 Disazo dyes, process for the preparation of binary or ternary mixtures of disazo dyes and process for the dyeing and/or the marking of organic materials |
| 06/25/1980 | EP0012297A1 Mixtures of mono or disazo dyes of the beta-naphthol series soluble in organic solvents and their use in the coloration of mineral-oil products, waxes or fats |
| 06/17/1980 | US4208324 Disperse diaminopyridine-3-azo dyestuffs |
| 06/11/1980 | EP0011773A2 Process for the production of amido-sulfonic acids |
| 06/10/1980 | US4207233 Azo dyes containing a thiazole component |
| 06/03/1980 | US4206113 Surface coatings, polyvinyl chloride |
| 05/28/1980 | EP0011177A1 Disazo compounds, process for their preparation and process for dyeing and printing fibrous polyamide materials |
| 05/13/1980 | US4202814 Process for the mass coloration of polyesters |
| 04/22/1980 | US4199318 Wool, silk or nylon |
| 04/15/1980 | US4198268 Process for producing colored paper using granulated dye compositions |
| 04/02/1980 | EP0009191A1 Water-insoluble disazodyestuffs, their preparation and application |
| 04/01/1980 | CA1074787A1 Disazo dyes having a benzthiazolyl group |
| 03/25/1980 | US4194883 Water-soluble disazo dyestuffs and process for coloring synthetic polyamide fibres with them |
| 03/25/1980 | US4194880 Process for the dyeing or printing of polyester fibers |
| 03/18/1980 | US4193763 Dyeing and printing of water-swellable cellulose material and blends thereof with synthetic fibres, by means of disazo dyes derived from amino-pyrazole |
| 02/20/1980 | EP0008029A1 Water-insoluble disazodyestuffs, their preparation and application |
| 02/19/1980 | US4189428 Dyeability, colorfastness, resistance to sublimation, improved brightness |
| 02/19/1980 | CA1072082A1 Disazo dyes |
| 02/05/1980 | US4187218 Water-soluble acid azo dye |
| 01/29/1980 | CA1070678A1 Acyldihydroxybenzenedisazo dyes for metallized polyolefins |
| 01/22/1980 | US4185013 Anionic azo dyes having a 3-dibenzofuranyl diazo component radical optionally having a 2- or 8-sulfo group |
| 12/25/1979 | US4180503 For dyeing polyamides |
| 12/25/1979 | CA1068682A Bisazomethine dyes for polypropylene |
| 12/11/1979 | CA1067897A1 Metal complex dyes, process for their manufacture and their use |
| 12/11/1979 | CA1067896A1 Water-soluble disazo dyestuffs |
| 11/13/1979 | CA1066271A1 Disazo compounds |
| 11/06/1979 | US4173565 Rubine disazo acid dyes for polyamides |
| 10/30/1979 | CA1065309A1 Azo dyestuffs |
| 10/30/1979 | CA1065308A1 Stable modification of a disazo dyestuff |
| 10/16/1979 | CA1064480A1 Azo compounds |
| 10/09/1979 | CA1064022A1 Water-soluble disazo dyestuffs, a process for their preparation and their use for dyeing synthetic and natural polyamides |
| 09/25/1979 | CA1062856A1 Water-soluble disazo dyestuffs for dyeing or printing synthetic textile material of polyamide or polyurethane fibers |
| 09/18/1979 | CA1062702A1 Disazo dyes |
| 08/28/1979 | US4166059 Alkali-fast disazo disulfimide dyes |
| 08/28/1979 | US4165967 Process for dyeing human hair with diazo salts and coupling components |
| 08/07/1979 | CA1059998A1 Water-soluble disazo dyestuffs, process for their preparation and their use |