Patents for C09B 35 - Disazo or polyazo dyes of the type a d b prepared by diazotising and coupling (1,497)
06/2001
06/27/2001EP1110945A2 Azocompounds for the antemortem diagnosis of Alzheimer's disease and in vivo imaging and prevention of amyloid deposition
06/26/2001US6251174 Ink composition containing at least two azo dyes
06/13/2001EP0970148B1 Oligomeric azo dyes
05/2001
05/31/2001WO2000014530A8 Azo dye aqueous solution, preparation method and use
05/31/2001WO1999024394A9 Compounds for the antemortem diagnosis of alzheimer's disease and in vivo imaging and prevention of amyloid deposition
04/2001
04/18/2001EP0968250B1 Soluble chromophores having improved solubilising groups
04/12/2001WO2001026105A1 Method for digitally and optically storing data
04/12/2001DE19947579A1 Verfahren zur digitalen optischen Datenspeicherung Method of digital optical data storage
04/03/2001US6211347 Inks, color filters
03/2001
03/28/2001EP1086180A1 Trisazo and polyazo dyes and the mixtures thereof
03/07/2001EP1081195A2 Process for the manufacture of pigment granules
03/06/2001US6197223 Reacting diacidic monomer having formula h--a--h, comprising 1 to 100 mole % of light-absorbing monomer having a light absorption maximum between 300 nm and 1200 nm and 99-0 mole % of a non-light absorbing monomer with organic compound
03/01/2001DE19941061A1 Verfahren zur Herstellung von Pigmentgranulaten Process for the preparation of pigment granules
02/2001
02/28/2001CN1285818A Compound for antemortem diagnosis of alzheimer's disease and i(IN VIVO) imaging and prevention of amyloid deposition
02/20/2001US6191265 Thermomigrationfast azo dyes
02/06/2001US6184362 Electrophotographic photoconductor, azo compounds for use in the same, and intermediates for producing the azo compounds
01/2001
01/16/2001US6174394 Method for thermostable and lightfast dichroic light polarizers
01/02/2001US6168895 An electrographic toner contains an azo dye and a charge control agent
12/2000
12/26/2000US6165681 Black-pigmented structured high molecular weight material
12/12/2000US6160101 Azo dyes, their preparation and their use
11/2000
11/28/2000US6153734 Oligomer azo colorants
11/07/2000US6143062 Can produce a printed image with full depth of shade and are excellent in resistance to water, storage stability
10/2000
10/31/2000US6140478 Suitable for coloring or printing especially of paper and leather.
10/31/2000US6140477 Near-infrared ray absorbing polyazo compound
10/31/2000US6139997 Electrophotographic photosensitive member, process cartridge and electrophotographic apparatus
10/04/2000CN1268532A Compositions of azo lake pigment
09/2000
09/27/2000EP1038925A2 Azo lake pigment composition
09/24/2000CA2301984A1 Azo lake pigment composition
09/21/2000WO2000055259A1 Azoxy dyes and their cu complexes
09/20/2000CN1266869A Azo dye, and its preparing process and use
09/19/2000US6120944 An optical color filter comprising extremely fine organic pigment particles in multi-thin layers
09/14/2000DE19911267A1 Azoxyfarbstoffe und deren Cu-Komplexe Azoxy dyes and their copper complexes
09/13/2000EP1035171A1 Azodyestuffs, their production and use
09/05/2000US6114512 Reacting a tetrazotized diamine compound with a coupling compound containing aminonaphthol-mono or di-sulfonic acid compound to form tetraazo dye
08/2000
08/29/2000CA2016539C Diarylide/disazo pyrazolone pigment compositions
08/23/2000EP1028941A2 Compounds for the antemortem diagnosis of alzheimer's disease and in vivo imaging and prevention of amyloid deposition
08/15/2000US6103435 Electrophotographic photoconductor, AZO compounds for use in the same, and intermediates for producing the AZO compounds
08/02/2000CN1261908A Pigment dispersion containing C. I. pigment red 222
08/02/2000CN1261612A Thermal migration fixed ozo dye
06/2000
06/29/2000DE19858997A1 Thermomigrierechte Azofarbstoffe Thermomigration azo dyes
06/28/2000EP1013717A1 Thermomigration-fast azo dyes
06/06/2000US6071989 Process for preparing fine pigment dispersions
05/2000
05/10/2000CN1252420A Bis-azo dye
05/03/2000CN1252135A Highly transparent, color-pigmented high molecular weight material
04/2000
04/19/2000EP0993490A1 Method for producing fine pigment dispersions
04/19/2000EP0993489A1 Pigment dispersions containing c.i. pigment red 222
04/13/2000DE19846098A1 Disazofarbstoffe Disazo dyes
04/12/2000EP0992544A1 Disazo-dyestuffs
04/11/2000US6048968 Cationic azo dyes based on aminobenzoic acid
04/05/2000EP0787783B1 Dichroic dyes, liquid-crystal composition containing the same, and liquid-crystal display element
03/2000
03/28/2000US6043349 Tetrakisazo dyes, their production and use
03/16/2000WO2000014530A1 Azo dye aqueous solution, preparation method and use
03/16/2000CA2342734A1 Azo dye aqueous solution, preparation method and use
03/15/2000EP0985929A1 Aqueous solution with azo-dye, its manufacturing method and utilization
03/14/2000US6036760 Applying to substrate liquid composition consisting of water as solvent; dye as alkylalkanolammmonium salt; colorfastness, water and rub-off resistance
02/2000
02/29/2000US6031083 Disazo dyestuffs
02/23/2000EP0980405A1 Oligomer azo colorants
02/23/2000CN1245516A Method for preparing light-absorbing polymeric compositions
02/22/2000US6028178 Pigment for electrophotographic toners and developers
01/2000
01/26/2000EP0974620A1 Stilbenazo paper dye
01/26/2000EP0974075A1 Black-pigmented structured high molecular weight material
01/26/2000EP0974074A1 Highly transparent, colour-pigmented high molecular weight material
01/24/2000CA2277533A1 Paper dye
01/19/2000EP0971987A1 Ink composition containing at least two azo dyes
01/12/2000EP0970148A1 Oligomeric azo dyes
01/11/2000US6013775 High color intensity, colorfastness
01/05/2000EP0968250A1 Soluble chromophores having improved solubilising groups
01/04/2000US6011141 Acid polyazo dyes
01/04/2000US6010567 Black-pigmented structured high molecular weight material
12/1999
12/22/1999CN1047606C Weak acid red dyestuff
12/16/1999WO1999064520A1 Trisazo and polyazo dyes and the mixtures thereof
12/14/1999US6001168 For pigmenting high molecular mass material, such as for inks, toners, coating materials, color filters and cosmetics, resins, caseins, cellulose ethers, celulose esters, polymers, polyolefins
12/09/1999DE19825202A1 Tris- und Polyazofarbstoffe sowie ihre Mischungen Tris and polyazo and their mixtures
12/07/1999US5997587 Azo dye mixtures, azo dyes, processes for their preparation, and their use
11/1999
11/24/1999CN1236379A Tetrakisazo dyes, their production and use
11/11/1999DE19820400A1 Kationische Azofarbstoffe auf der Bais von Aminobenzoesäure Cationic azo dyes on the bais of aminobenzoic acid
11/10/1999EP0955342A1 Cationic azo dyes derived from aminobenzoic acid
11/09/1999US5981124 Electrophotographic photoconductor, azo compounds for use in the same, and intermediates for producing the azo compounds
10/1999
10/13/1999EP0948570A1 Method for preparing light-absorbing polymeric compositions
10/12/1999US5965717 Useful intermediate for forming bisazomethines, disazoacetoacetanilides, disazopyrazolones, disazobenzimidazolones and disazonaphthols
10/12/1999US5965715 Diazonating a diamine compound containing a cyclic group having a conjugated double bond and copling the obtained bisdiazonium compound with 2-alkoxy or hydroxy or acyloxy or phenyloxy naphthalene diamide or dicarboxylated derivative
09/1999
09/30/1999DE19913336A1 New near infrared absorbing polyazo compounds used e.g. in recording media, photoconductors, filters, transducers or screens
09/28/1999US5958128 Method of manufacturing a disazo pigment and disazo pigment manufactured thereby
09/14/1999US5952477 A water-soluble azo dye for use in polarizing film has high hydrothermoresistance and a high polarization degree and is excellent in optical characteristics
09/08/1999EP0940726A1 Electrophotographic photosensitive member, process cartridge and electrophotographic apparatus
08/1999
08/26/1999DE19808088A1 New tris(hydroxynaphthylazo) bridged triphenylamine pigments for electrophotographic charge generating layer
08/24/1999CA2090835C Electrophotographic photoreceptor
08/19/1999WO1999024394A3 Compounds for the antemortem diagnosis of alzheimer's disease and in vivo imaging and prevention of amyloid deposition
07/1999
07/28/1999EP0931109A1 Tetrakisazo dyes, their production and use
07/14/1999EP0928815A1 Water-soluble disazo compounds, water-base ink composition, and colored object
06/1999
06/23/1999CN1220683A Water-soluble disazo compounds, water-base ink composition, and colored object
05/1999
05/20/1999WO1999024394A2 Compounds for the antemortem diagnosis of alzheimer's disease and in vivo imaging and prevention of amyloid deposition
05/20/1999CA2309626A1 Compounds for the antemortem diagnosis of alzheimer's disease and in vivo imaging and prevention of amyloid deposition
05/06/1999EP0634457B1 Azo dyes for color filter and process for producing color filter
03/1999
03/18/1999DE19740473A1 Oligomeric azo dyes for dyeing e.g. cotton, wool, polyamide and especially leather
03/17/1999CN1211270A Bisazo compounds and process for the preparation thereof
03/16/1999US5883234 Process for dyeing cellulosic materials with disazo dyestuffs
03/16/1999US5883233 Disazo dyes from diaminostilbenedisulfonic acids
02/1999
02/25/1999DE19735769A1 Magenta azo dye used in ink-jet printing ink
02/17/1999CN1208059A Substantive disazo dyes
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