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)
02/1999
02/10/1999EP0896032A1 Substantive dis- and trisazo dyestuffs
01/1999
01/14/1999WO1999001512A1 Pigment dispersions containing c.i. pigment red 222
01/14/1999WO1999001511A1 Method for producing fine pigment dispersions
12/1998
12/29/1998US5853930 Electrophotographic photoconductors using bisazo compounds
12/09/1998EP0882767A1 Bisazo compounds and process for the preparation thereof
12/01/1998US5844101 Light-fast disazo dyestuffs
11/1998
11/12/1998WO1998050470A1 Oligomer azo colorants
11/11/1998CN1040643C Process for preparing [5-amino-2-(2-hydroxyethylamino)-phenyl] (2-hydroxyethyl) sulphone
11/05/1998DE19718659A1 Oligomere Azofarbstoffe Oligomeric azo dyes
10/1998
10/28/1998EP0873376A1 Acid polyazo dyes
10/20/1998US5824118 Dyeing automobile seat covers containing acrylic or cationic-dyeable polyester
10/15/1998WO1998045757A1 Black-pigmented structured high molecular weight material
10/15/1998WO1998045756A1 Highly transparent, colour-pigmented high molecular weight material
10/08/1998WO1998044053A1 Ink composition containing at least two azo dyes
10/08/1998WO1998044051A1 Water-soluble disazo compounds, water-base ink composition, and colored object
09/1998
09/24/1998WO1998041581A1 Oligomeric azo dyes
09/24/1998DE19711169A1 Oligomere Azofarbstoffe Oligomeric azo dyes
09/23/1998CN1193638A Azo dye mixtures, azo dyes, processes for their preparation, and their use
09/16/1998EP0864614A1 Mixtures of azo dyes, azo dyes, process for their preparation and the use thereof
09/15/1998US5808016 Disazo dyestuffs
09/02/1998EP0861879A2 Polyazo dyes
08/1998
08/04/1998US5789556 Dichroic dye, and liquid-crystal composition and liquid-crystal display element containing the dye
07/1998
07/30/1998WO1998032802A1 Soluble chromophores having improved solubilising groups
07/30/1998CA2275965A1 Soluble chromophores having improved solubilising groups
07/28/1998US5786459 Tetrazo dyestuffs
06/1998
06/18/1998DE19654492A1 Tris:azo compounds useful as photoconductors in charge generating layer
06/04/1998WO1998023690A1 Method for preparing light-absorbing polymeric compositions
06/03/1998CN1183437A Polyazo dyes
05/1998
05/28/1998DE19648939A1 Black or blue sulphonated poly:azo dyes and intermediate sulphon:amide
05/13/1998EP0841378A2 Use of aqueous concentrated solutions of a salt of a disazo dye in the ink-jet process as the disazo dye salt
04/1998
04/30/1998WO1998017728A1 Bisazo compounds and process for the preparation thereof
04/30/1998DE19643769A1 New dis:azo dyes for polyester
04/14/1998US5739296 Method and materials for thermostable and lightfast dichroic light polarizers
03/1998
03/25/1998EP0831131A1 Process for dyeing cellulosic materials with disazo-dyestuffs
03/25/1998EP0831130A1 New light fast disazodyes
03/25/1998EP0831129A1 Disazodyestuffs
03/24/1998US5731110 Photoresist composition for use in color filters
03/12/1998WO1998010021A1 Tetrakisazo dyes, their production and use
03/04/1998EP0826742A1 Process for the preparation of disazo pigments and disazo pigments prepared by the process
02/1998
02/18/1998EP0823894A1 Azocompounds for the antemortem diagnosis of alzheimer's disease and in vivo imaging and prevention of amyloid deposition
02/10/1998US5717080 Bis-azo compounds with 2,3-dichlorobenzoyl group
02/10/1998US5716445 Pigment
12/1997
12/23/1997US5700296 Azo compound and a polarizing film containing the same
11/1997
11/12/1997EP0806198A2 Dyeing composition
11/12/1997CN1164550A Pigment
11/11/1997US5686585 Magenta or red dyes
11/04/1997US5684139 Direct disazo dyestuffs
10/1997
10/07/1997US5674299 Using mono- or disazo, cationic or basic dye
09/1997
09/16/1997US5668260 Tetrakisazo Compounds, the method of preparation thereof and the process of pyeing
09/02/1997US5663309 Diazo dyes having a phenylene group as the middle component and a naphthalene group as the terminal diazo component
08/1997
08/28/1997WO1997031067A1 Process for the preparation of disazo pigments and disazo pigments prepared by the process
08/20/1997EP0790282A2 Polymorph of a yellow diarylide pigment
08/14/1997CA2197389A1 Polymorph of a yellow diarylide pigment
08/06/1997EP0787783A1 Dichroic dyes, liquid-crystal composition containing the same, and liquid-crystal display element
07/1997
07/10/1997WO1997024405A1 Acid polyazo dyes
07/08/1997US5646257 For dyeing and printing cellulose containing materials
07/03/1997DE19548785A1 Saure Polyazofarbstoffe Acid polyazo
06/1997
06/25/1997EP0780363A1 Bisazo-benzofuran compounds, their use as charge carrier generating compounds and intermediates for their preparation
06/10/1997US5637679 Water resistance, wear resistance, resolution, colorfastness
05/1997
05/28/1997EP0700420A4 Thermostable and lightfast dichroic light polarizers
05/22/1997DE19616718A1 New bis-pyrazolyl-azo-phenyl compound dis:azo dyes
04/1997
04/08/1997US5618868 Polarizing film of a hydrophilic polymer film containing a novel azo compound
03/1997
03/12/1997CN1144823A Trisazo dye
02/1997
02/27/1997WO1997007184A1 Dichroic dyes, liquid-crystal composition containing the same, and liquid-crystal display element
01/1997
01/28/1997US5597387 Water-soluble polyazo dyestuffs
01/23/1997DE19629238A1 Fast basic 1-amino-alk(en)yl-2-hydroxy-6-pyridone dis:azo dyes bleached by redn.
01/15/1997EP0753543A1 Substantive disazo dyestuffs
01/15/1997EP0753542A1 Polyazo dyestuffs
12/1996
12/31/1996US5589315 Shelf life, screen printing
12/31/1996US5589100 Liquid crystal display substrates with arylazo or polyarylazo dyes
12/11/1996EP0747449A1 Bisazo compound
11/1996
11/07/1996WO1996034853A1 Azocompounds for the antemortem diagnosis of alzheimer's disease and in vivo imaging and prevention of amyloid deposition
11/07/1996CA2219880A1 Azocompounds for the antemortem diagnosis of alzheimer's disease and in vivo imaging and prevention of amyloid deposition
10/1996
10/29/1996US5569749 Organic photoconductive material and a photosensitive material for electronic photography using it
10/23/1996EP0738764A1 Tetrakisazo compounds, their preparation and their use as dyestuffs
08/1996
08/21/1996EP0727465A2 An azo compound and a polarizing film containing the same
08/14/1996DE4447593A1 Transparent strong yellow azo pigment as powder with large surface area
08/14/1996DE4042454C2 New bis:azo charge carrier generating cpds. - used in photoconductors for electrophotography, esp. copier or printer
08/13/1996US5545725 For dyeing paper
08/06/1996US5542956 Process for dyeing or printing hydroxyl group containing fiber materials
07/1996
07/16/1996US5536819 Trisazo compounds imparting deep black color a method for dyeing by using them and an ink containing them
07/16/1996US5536818 Dichroic azo dye, liquid crystal composition containing the same, and liquid crystal element using the composition
07/16/1996CA2031797C Liquid crystal coupled dichloric dyes
07/03/1996EP0719837A2 Azo dyes, process for their preparation and use thereof
06/1996
06/25/1996US5530105 Tetraskisazo compound and ink containing the compound
05/1996
05/28/1996US5521039 Electrophotographic photosensitive material and printing plate for electrophotographic process
05/22/1996EP0712903A1 Water-soluble polyazo dyes
05/02/1996WO1996012750A1 Polymer compositions containing substituted biphenyl pyrazines
05/02/1996WO1996012709A1 Substituted biphenyl pyrazines
04/1996
04/23/1996US5510468 Amino benzophenone dye
04/10/1996EP0705886A2 Pigments for electrophotographic toners and developers
04/10/1996CN1120053A Tri-azo black dyestuff
04/10/1996CN1120052A Dyestuff
04/09/1996US5506346 Carrier generating substance having high performance and durability
04/02/1996US5503666 Dyestuffs and their use in inks for ink-jet printing processes
03/1996
03/13/1996EP0700420A1 Thermostable and lightfast dichroic light polarizers
03/12/1996US5498701 Basic disazo compounds containing sulphonic acid groups
02/1996
02/27/1996US5495003 2,2'-disulfo-4,4'-substituted triazinylaminophenyl disazostilbenes
02/20/1996US5493011 Monoazo or disazo pigments based on (benoxazol-2-yl)- or (benzimidazol-2-yl)-arylacetamides
02/14/1996EP0696619A1 Process for dyeing of paper
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15