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 35 - Disazo or polyazo dyes of the type a d b prepared by diazotising and coupling
Patents for C09B 35 - Disazo or polyazo dyes of the type a d b prepared by diazotising and coupling (1,497)
10/1982
10/13/1982EP0062200A1 Disazo dyestuffs
09/1982
09/28/1982CA1132541A1 Developed direct black dye
09/21/1982US4350603 Novel tris-azo dyes and liquid crystal compositions made therewith
09/01/1982EP0059166A1 Disazo dyestuffs and their use in colour-photographic light-sensitive materials for the silver dye bleaching process
09/01/1982EP0059165A1 Method and dyestuffs for dyeing cellulosics and blends thereof without afterwash
09/01/1982EP0058866A1 Anthraquinone-azo compounds, their preparation and use
08/1982
08/10/1982US4343882 Electrophotographic bisazo photoconductor
08/03/1982US4342684 Hydrosoluble pyrazolone trisazo dyestuffs derived from 4,4'-diamino-benzenesulfanilide
07/1982
07/27/1982US4341701 Coupling diazonium salts
07/20/1982US4340386 Cationic dyestuff printing inks
07/14/1982EP0055850A2 Disazo compounds, methods for their preparation and their use
07/14/1982EP0055838A2 Liquid cristalline material containing disazodyes
07/08/1982WO1982002209A1 Liquid crystal compositions with novel tris-azo dichroic dyes
07/07/1982EP0055380A1 Disazo compounds, methods for their preparation and their use
06/1982
06/30/1982EP0054837A1 Liquid crystal compositions with tris-azo dichroic dyes
06/24/1982WO1982002054A1 Novel yellow azo dyes and dichroic liquid crystal compositions made therefrom
06/02/1982EP0052716A1 Water-soluble azo compounds, methods for their preparation and their use as dyestuffs
05/1982
05/05/1982EP0051041A1 Basic or cationic sulphonic acid group-containing azo compounds, their synthesis and their use in dyeing substrates containing paper or cotton as well as dyestuff preparations thereof
04/1982
04/27/1982US4327168 Electrophotographic element containing disazo pigment charge generating material
04/27/1982US4327020 Useful in electrophotographic photoconductors
04/20/1982US4325871 Useful as photoconductors in electrography
03/1982
03/31/1982EP0048692A1 Azo coupling process
03/31/1982EP0048538A1 Azo dyes
03/23/1982US4321318 Disazo photoconductor and process of manufacture of electrophotographic element
03/03/1982EP0046729A2 Process for the mass colouring of polyamide fibres with azo dyestuffs
02/1982
02/17/1982EP0045840A1 Method to prepare solutions of cationic polyazo dyestuffs
02/09/1982US4314816 Direct blue dyes from the condensation of diaminostilbenedisulfonic acid with N-alkyl or N-hydroxyalkyl-8-amino-1-naphthol-3,6-disulfonic acid
02/02/1982US4314015 Electrophotographic sensitive materials containing disazo compounds
01/1982
01/08/1982EP0034174A4 Hydrogel implant article and method.
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
11/1981
11/10/1981US4299896 Electrophotographic sensitive materials containing a disazo pigment
10/1981
10/27/1981US4297278 Pentakis-and heptakis-azoxy dyestuffs
10/20/1981US4296028 For rotogravure inks
10/20/1981US4295889 Storage stability
10/13/1981US4294755 Pigments containing pyrazolo quinazolone radicals
10/06/1981US4293628 Electrophotographic elements containing disazo compounds
10/06/1981US4293492 Disazo compounds derived from 3,6-bis(styryl)-9-ethylcarbazole
09/1981
09/09/1981EP0035152A1 Polyazo dyestuffs and their concentrated aqueous solutions as well as their use in dyeing leather and material containing cellulose
09/08/1981US4288362 Monoazo pigments containing a quinazo linonylacetoacetanilide coupling component
09/02/1981EP0034942A2 Electrophotographic light-sensitive media
09/02/1981EP0034725A2 Dyestuffs containing imidazolylethylene groups and their use
08/1981
08/26/1981EP0034498A2 Electrophotographic light-sensitive media
08/26/1981EP0034497A1 Electrophotographic light-sensitive media
08/26/1981EP0034174A1 Hydrogel implant article and method.
08/25/1981US4285860 Leather, nylon, cotton, paper; colorfastness; black
08/25/1981CA1107888A1 High purity polymeric water-soluble colorants and their production
07/1981
07/21/1981US4279981 Electrophotographic elements containing trisazo compounds
07/21/1981US4279814 Salicyl phenyl naphthyl trisazo di and trisulfonic developed direct black dyes
07/14/1981US4278747 Electrophotographic plate comprising a conductive substrate and a photosensitive layer containing an organic photoconductor layer composed of a hydrazone compound
06/1981
06/16/1981US4273555 Azo compounds
06/09/1981US4272598 Styryl dyes
05/1981
05/26/1981US4269769 Diazo compounds obtained by coupling acetoacetanilides with tetrazotized diaminobenzanilides
05/20/1981EP0029009A1 Preparation of pigments
05/19/1981US4268596 Electrophotographic element having 1,4-bis(azostyryl)-2,5 dimethoxy benzene compounds as photoconductors
05/12/1981US4266939 Composition of 4-amino-4'-nitrostilbene-2,2'-disulphonic acid diazo compounds and coloring process
05/05/1981US4265813 Prepared from diazotized anilines and disazo dyes
04/1981
04/07/1981US4260672 Electrophotographic sensitive element having a photoconductive disazo pigment
04/07/1981US4260540 Spin dyeing polyacrylonitrile
03/1981
03/24/1981CA1098120A1 Azo compounds and preparation thereof
03/11/1981EP0024702A2 Disazo compounds, process for their preparation and their use as dyestuffs
03/11/1981EP0024676A2 Process for finishing fibrous materials
03/05/1981WO1981000570A1 Hydrogel implant article and method
03/03/1981US4254025 Disazo and polyazo dyestuffs
02/1981
02/17/1981US4251614 Novel disazo compounds, process for the preparation of same and application of said disazo compounds and analogues thereof to electrophotographic sensitive materials
02/17/1981US4251613 Laminate of conductive support and photosensitive layer
02/10/1981US4250091 Water-soluble disazo dyestuff derived from 4,4-diaminobenzanilide
02/03/1981US4248776 Black dye for leather, natural and polyamide fibers
01/1981
01/21/1981EP0022512A1 Azo compounds containing phosphorus, their preparation, and their use as pesticides, as light sensitive materials and as starting materials for the synthesis of pyrazolones
01/07/1981EP0021837A1 Metallisable trisazo black dyestuffs and mixtures thereof, their preparation and use in dyeing cellulosic fibres
12/1980
12/30/1980US4242260 Electrography; photoconductivity
12/23/1980CA1092099A1 Azo dye compounds
11/1980
11/25/1980US4235773 Trisazo dyestuffs containing a naphtholamino sulfonic acid component and a phenylcarbonylamino-phenyl component
11/25/1980US4235598 For dyeing polyester fibers
11/04/1980US4231964 Nitroamines, processes for their manufacture and their use as diazo components
11/04/1980US4231746 Dyeing of cellulose-containing textile material and novel dyes for use therein
10/1980
10/28/1980CA1088258A1 Stable concentrated liquid preparation of a paper dye of the disazo class
10/28/1980CA1088257A1 Stable concentrated liquid preparation of paper dyes of the disazo class
10/15/1980EP0016975A2 Polyazo dyestuffs and their use in dyeing fibre-materials and leather containing amino- and hydroxyl groups
10/14/1980US4228073 Nondiffusible azo dye-releasing compounds
09/1980
09/30/1980US4225492 Water-soluble disazo dyestuffs, prepared from unsymmetrical heterocyclic diamines
09/30/1980US4225489 Heterocyclic azo dyes and pigments containing 4-quinazolinone moieties
09/09/1980US4221562 Quaternary ammonium substituted, with glutaraldehyde or glyoxal, for printing cellulose
08/1980
08/20/1980EP0014679A1 Watersoluble trisazo dyestuffs containing a diphenylether or diphenyldisulfimid component, process for their preparation and their use for dyeing and printing cellulose, polyamides and leather
08/20/1980EP0014378A1 Tris- or tetrakisazo-dyestuffs and their use for dyeing leather
08/06/1980EP0013922A2 Process for dyeing and printing fibrous materials containing hydroxy groups
08/06/1980EP0013750A1 Tris- or tetrakisazo stilbene dyestuffs and their use in dyeing cellulose-containing materials
06/1980
06/25/1980EP0012350A1 Azo dyestuffs, their preparation and their use in the dyeing of N-containing materials
05/1980
05/27/1980US4204871 Printing inks containing nucleated organic pigments
04/1980
04/15/1980US4198268 Process for producing colored paper using granulated dye compositions
04/08/1980CA1075232A1 Water soluble dyestuffs
04/08/1980CA1075231A1 Water-soluble trisazo dyestuffs, their manufacture and their use
04/03/1980WO1980000570A1 Halogen-containing azo dyes
03/1980
03/19/1980EP0008627A2 Quinazoline derivatives, azo dyes derived from the quinazolines and their use as pigments
02/1980
02/20/1980EP0008079A1 Bis-aminopyridines, their preparation and use as oxidative hair dye components, and hair dyestuffs containing them
02/05/1980CA1070904A1 Process for dyeing or printing a basic dyeable textile substrate
01/1980
01/08/1980US4182713 Benzotriazoles useful as azo dyestuff intermediates
12/1979
12/18/1979US4179395 Dichroic dyes having a plurality of azo bonding groups
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