Patents
Sitemap › C09 - Dyes; Paints; Polishes; Natural resins; Adhesives; Compositions not otherwise provided for; Applications of materials not otherwise provided for › C09B - Organic dyes or closely-related compounds for producing dyes; Mordants; Lakes › C09B 43 - Preparation of azo dyes from other azo compounds
Patents for C09B 43 - Preparation of azo dyes from other azo compounds (1,452)
01/1982
01/13/1982EP0043439A2 Mixed trisazo/azoxy dyestuffs, their preparation and use
12/1981
12/29/1981US4308164 Novel yellow azo dyes and dichroic liquid crystal composition made therewith
12/29/1981US4308163 Novel yellow azo dyes and dichroic liquid crystal composition made therewith
12/29/1981US4308162 Novel yellow azo dyes and dichroic liquid crystal compositions made therewith
12/29/1981US4308161 Novel yellow azo dyes and dichroic liquid crystal compositions made therewith
12/23/1981EP0042108A1 Reactive dyes, their use and cellulose fibers dyed therewith
12/16/1981EP0041697A2 Process for dyeing and printing synthetic hydrophobic fibre material
12/01/1981CA1113459A1 Monoazo pigments
11/1981
11/18/1981EP0040173A1 Disazo pigment, method for its preparation and its use
11/11/1981EP0039439A2 Process to prepare water-soluble dyestuffs with a low salt content
11/10/1981US4299917 Impregnation of an absorbent carrier with a sulphonphthalein ester and an activator
11/10/1981CA1112003A1 Disazo urea dyestuff solutions
11/03/1981CA1111843A1 Aromatic nitro compounds
10/1981
10/27/1981US4297278 Pentakis-and heptakis-azoxy dyestuffs
10/21/1981EP0038296A1 Bisazo compounds
10/21/1981EP0037985A1 Photographic material and compounds for use therein, and that release a photographically active moiety
10/20/1981US4296202 Diagnostic composition for the detection of leukocytes and chromogens useful therein
10/20/1981CA1111024A1 Water-insoluble azo dyes
10/14/1981EP0037465A2 Amino azo compounds
10/06/1981US4293306 Process for the dyeing and printing of hydrophobic synthetic organic fiber materials with water-insoluble azo dyestuffs
09/1981
09/30/1981EP0036838A2 Azo dyestuffs, their preparation and their use
09/30/1981EP0036636A1 A method and intermediates for preparing 3,3'-azo-bis-(6-hydroxy benzoic acid)
09/30/1981EP0036512A2 Water-insoluble azo dyestuffs, their preparation and use
09/23/1981EP0036081A1 Azo dyestuffs as well as their preparation and their use in dyeing synthetic fibres
09/22/1981US4290964 Undescanoic acids and esters thereof
09/16/1981EP0035671A1 Water-insoluble azo dyestuffs, methods for their preparation and their use in dyeing and printing synthetic hydrophobic fibre materials
09/15/1981US4289694 Reuse of copper-containing catalyst
09/08/1981US4288363 Novel azo dyes having 2-amino-5-aminomethyl-7-sulfo naphthalene coupling moiety
09/08/1981CA1108605A1 Monoazo pigments and process for their production
09/02/1981EP0034832A1 Liquid crystal with an incorporated pleochroic anthraquinone dyestuff and its use
08/1981
08/25/1981US4285864 Disulfonic phenyl-azo-naphthyl-azo-phenyl alkoxy dyes for polyamides
08/12/1981EP0033443A1 Azo dyestuffs, their preparation and use in dyeing synthetic fibres
08/11/1981US4283331 Azo dyes, their preparation and use
07/1981
07/21/1981US4279813 Azo dyes
07/08/1981EP0031798A2 Monoazo pigments and processes for their preparation
07/07/1981CA1104565A1 Hydrazone compounds, their preparation and use
06/1981
06/24/1981EP0030656A1 Disazo dyestuffs and their use in dyeing polyesters and cellulose fibres
06/17/1981EP0030314A1 Water-insoluble monoazo dyestuffs, their preparation and use in dyeing and printing synthetic polymeric materials
06/16/1981US4273707 Monoazo and disazo dyes containing at least one sulfo group and at least two basic or cationic groups
06/10/1981EP0029950A1 Trisazo dyestuffs, process for their preparation and their use in dyeing vegetable fibre materials and leather
06/03/1981EP0029545A1 Disazo dyestuff, process for its preparation and its use
05/1981
05/26/1981US4269770 Process for the preparation of cyanoazo dyestuffs
05/12/1981US4266939 Composition of 4-amino-4'-nitrostilbene-2,2'-disulphonic acid diazo compounds and coloring process
04/1981
04/21/1981US4263205 For coloring polymers, lacquers
04/14/1981CA1099260A1 Process for manufacturing cyano containing, azoic dyestuffs
04/01/1981EP0025903A1 Monoazo dyestuffs, their preparation and use in dyeing and printing of fibre materials by the usual methods and by the transfer-printing principle, as well as transfer-printing inks and substrates suited for transfer-printing
03/1981
03/31/1981US4259237 Azo dyestuffs containing phenolic coupling group
03/31/1981CA1098516A1 Process for the manufacture of phthalocyanine azo dyestuffs
03/24/1981US4257944 Cyanation with a nonmetallic nitrile in the presence of a copper catalyst
03/24/1981US4257942 New water-insoluble azo dyes
03/24/1981CA1098120A1 Azo compounds and preparation thereof
03/17/1981CA1097618A1 Modification of a disazo pigment
02/1981
02/24/1981US4252716 Benzthiazolyl-azo-indole basic dyestuffs
02/24/1981US4252566 Cumarinic pigments
02/17/1981CA1095902A1 Process for the production of azo pigments
02/10/1981US4250238 Photographic products and processes employing novel dye developer compounds
02/03/1981US4248956 Photographic products and processes employing heterocyclic azo dye developer compounds
01/1981
01/27/1981US4247460 Disazo dyestuff sulphuric acid ester
01/20/1981CA1094055A1 Water insoluble azo dyes
01/06/1981US4243583 Process for the preparation of azo dyes
12/1980
12/23/1980US4240959 For acrylonitrile polymer or copolymer fibers; fastness
12/16/1980CA1091655A1 Dicyano azo dyes having ether substituted aniline couplers
12/10/1980EP0019846A2 Tanning agents of the azo series, their preparation and their use in the simultaneous tanning and dyeing of leather, and preparations containing them
12/02/1980US4237048 Monoazo dyestuff containing di-cyano substituents ortho to the azo group
11/1980
11/18/1980US4234672 Good storage stability, but unblock rapidly under processing conditions
11/18/1980US4234482 Substituted 3-carbalkoxy 4-alkylamino-azobenzene compound as disperse dyestuffs for synthetic fibers
11/04/1980US4231746 Dyeing of cellulose-containing textile material and novel dyes for use therein
10/1980
10/29/1980EP0017831A1 Azo-triazine-azo dyestuffs and their use in dyeing paper
10/21/1980US4229344 Monazo pigments containing hydroxynaphthoylaminobenzimidazalone radical
10/15/1980EP0016975A2 Polyazo dyestuffs and their use in dyeing fibre-materials and leather containing amino- and hydroxyl groups
09/1980
09/30/1980US4225493 Disazo dyestuffs derived from three carbocyclic components including a terminal component substituted with sulfo and alkoxy
09/17/1980EP0015882A1 Undecanoic acids and esters thereof, and a process for their preparation
09/17/1980EP0015361A1 Cumarinic pigments, process for their preparation and their use
09/16/1980US4222935 Process for the manufacture of aromatic nitriles
09/03/1980EP0014929A1 Diagnostic means, process for its preparation and its use in determining leucocytes in body fluids
08/1980
08/26/1980US4219472 5-Aminomethyl-2-amino naphthyl-(1) azo dyes
08/20/1980EP0014451A1 Method for dyeing and printing synthetic hydrophobic organic fibre materials with water insoluble azodyestuffs
08/19/1980US4218373 For dyeing wool and polyamides, deep red to violet
08/19/1980US4218368 Aromatic nitro compounds containing diffusible groups cleavable by intramolecular nucleophilic displacement
08/19/1980CA1084047A1 Process for the production of sulfuric acid semi- ester compounds
08/12/1980US4217271 Basic azo dyestuffs containing a n-picolinium alkylene amino phenyl group
08/05/1980US4216147 Insecticides, nematocides
07/1980
07/01/1980US4210586 Disperse dyes from 2-bromo, chloro, or cyano-4,6-dinitroaniline and selected alkyl-3-(2'-alkoxy-5-alkanoylaminoanilino)butyrate or alkyl-4-(2'-alkoxy-5'-alkanoylaminoanilino)valerate
06/1980
06/25/1980EP0012716A1 Monochlorotriazine dyestuffs of the pyrazolone series, their preparation and their use for dyeing and printing textile materials
06/11/1980EP0011873A1 Polyazo dyestuffs, their preparation and application to the dyeing of cellulose materials
06/03/1980US4206115 Ortho-carboxyphenyl azo ortho-hydroxypyrazole yellow dyes having silver halide developing capability
05/1980
05/20/1980US4204056 Process and intermediates for preparing fiber-reactive phthalocyanine dyes
04/1980
04/22/1980CA1076106A1 Photographic dye diffusion transfer process
04/16/1980EP0010001A2 Photographic recording material containing shifted dye releasing compound
04/15/1980US4198268 Process for producing colored paper using granulated dye compositions
04/15/1980US4198235 Dye diffusion transfer process employing compounds that release sulfonamide dye providing radicals
04/02/1980EP0009191A1 Water-insoluble disazodyestuffs, their preparation and application
03/1980
03/25/1980US4194883 Water-soluble disazo dyestuffs and process for coloring synthetic polyamide fibres with them
03/11/1980US4192800 Process for the manufacture of aromatic nitriles
03/05/1980EP0008428A2 Diagnostic reagent for the detection of leukocytes in body fluids and azo-ester dyes useful as chromogens therefor, process for their preparation and their use in the preparation of diagnostic reagents for the detection of leukocytes in body fluids
03/04/1980US4191686 Process for preparing fiber-reactive phthalocyanine azo dyes
02/1980
02/19/1980CA1072084A1 Azo dyestuffs
01/1980
01/23/1980EP0007029A1 Method for preparing aromatic phosphorus compounds
01/22/1980US4185013 Anionic azo dyes having a 3-dibenzofuranyl diazo component radical optionally having a 2- or 8-sulfo group
01/09/1980EP0006154A1 Monoazo pigments and their use in colouring high molecular-weight organic material
1 ... 3 4 5 6 7 8 9 10 11 12 13 14 15