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 31 - Disazo or polyazo dyes of the type a b c, a b c d, or the like, prepared by diazotising and coupling
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)
10/2001
10/24/2001EP1147151A1 Disazo dyes and inks containing them
09/2001
09/27/2001US20010023938 Polymer bonded to dye
09/19/2001EP1133532A1 Use of compositions containing bisazo compounds for detecting fissures
09/12/2001CN1070894C Azo dyes, processes for their preparation and their use
09/11/2001US6288217 Disazo dyes
08/2001
08/29/2001EP0840766B1 Stabilised dye composition
06/2001
06/26/2001US6251174 Ink composition containing at least two azo dyes
05/2001
05/03/2001WO2001030917A1 Disazodyestuffs for ink jet printing
05/03/2001WO2001030916A1 Disazo dyestuffs for ink jet printing
04/2001
04/12/2001WO2001026105A1 Method for digitally and optically storing data
04/12/2001DE19947579A1 Verfahren zur digitalen optischen Datenspeicherung Method of digital optical data storage
03/2001
03/22/2001WO2001019925A1 Disazo dyes and inks containing them
03/22/2001WO2001019924A1 Disazo dyes and inks containing them
03/21/2001EP1084201A1 Use of lithium salts of anionic dyes to enhance their light-fastness
03/07/2001EP1081184A1 Pigment for warpage-free polyolefins coloration
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
02/2001
02/27/2001US6194554 Disazo dyes
01/2001
01/25/2001WO2001006281A1 Polarizer comprising dye
11/2000
11/30/2000WO2000043453A3 Disazo dyes and inks containing them
11/07/2000US6143062 Can produce a printed image with full depth of shade and are excellent in resistance to water, storage stability
10/2000
10/31/2000US6140477 Near-infrared ray absorbing polyazo compound
08/2000
08/31/2000WO2000050515A1 Disazo dye, recording fluid containing the same, ink-jet recording fluid, and ink-jet recording method
07/2000
07/29/2000CA2297369A1 Dye mixtures
07/27/2000WO2000043453A2 Disazo dyes and inks containing them
07/27/2000WO2000043452A1 Disazo dyes and inks containing them
07/27/2000WO2000043451A1 Disazo dyes and inks containing them
07/27/2000WO2000043450A1 Disazo dyes and inks containing them
07/26/2000CN1054878C Use of azo dyes for marking hydrocarbons and novel azo dyes
07/04/2000US6084078 (2,4-dimethyl,6-sulfophenyl)azo(sulfonaphth-1,4-ylene)-azo-(1 -hydroxyl,3-sulfonaphth-2,6-ylene)(substituted)amine, where the sulfonic acids are in the form of metal salts with lithium or potassium, or with organic ammonium ions
06/2000
06/28/2000EP1013718A1 Disazo dye for thermal transfer recording, and thermal transfer sheet and ink for thermal transfer recording, employing it
06/02/2000WO2000031188A1 Use of compositions containing bisazo compounds for detecting fissures
06/02/2000CA2347780A1 Use of compositions containing bisazo compounds for detecting fissures
05/2000
05/31/2000DE19854677A1 Verwendung von Bisazoverbindungen enthaltenden Zusammensetzungen als Rissprüfmittel Use of bis azo compounds containing compositions as crack detection
05/10/2000CN1252830A Water soluble trisazo compounds, aqueous ink composition and colored article
02/2000
02/23/2000CN1245516A Method for preparing light-absorbing polymeric compositions
02/16/2000EP0979847A1 Water-soluble trisazo compounds, aqueous ink composition and colored article
01/2000
01/19/2000EP0971987A1 Ink composition containing at least two azo dyes
12/1999
12/28/1999US6008331 Useful as black colorants for ink jet printing inks
12/16/1999WO1999064526A1 Use of lithium salts of anionic dyes to enhance their light-fastness
11/1999
11/24/1999CN1046756C Process for detecting marked mineral oils and new azo dyes
11/23/1999US5989326 Disazo dye for colorfast, washfast aqueous black ink
10/1999
10/19/1999US5969115 Bisazo dyes and their preparation and use
10/19/1999US5969114 Azo compound
10/13/1999EP0948570A1 Method for preparing light-absorbing polymeric compositions
09/1999
09/30/1999DE19913336A1 New near infrared absorbing polyazo compounds used e.g. in recording media, photoconductors, filters, transducers or screens
09/22/1999CN1229108A Red dyestuffs and making method thereof
09/21/1999US5955615 Couplers
09/01/1999EP0611811B1 Recording fluid
07/1999
07/28/1999EP0924263B1 Disazo dyes, their preparation and use thereof
07/14/1999EP0928815A1 Water-soluble disazo compounds, water-base ink composition, and colored object
06/1999
06/23/1999EP0924263A1 Disazo dyes, their preparation and use thereof
06/23/1999CN1220683A Water-soluble disazo compounds, water-base ink composition, and colored object
06/02/1999EP0919596A1 Disazo dyes
06/02/1999EP0723574B1 Process for detecting marked mineral oils
04/1999
04/06/1999US5891230 Bisazo ink-jet dyes
03/1999
03/31/1999EP0736080B1 Use of azo dyes for marking hydrocarbons and novel azo dyes
03/30/1999US5888286 Bisazo ink-jet dyes
03/18/1999WO1999013008A1 Watersoluble disazo dyestuffs as well as inks for ink jet recording method containing them
03/16/1999US5883234 Process for dyeing cellulosic materials with disazo dyestuffs
03/16/1999US5882392 Printing ink for ink jet printers
03/16/1999US5882391 Bisazo inkjet dyes
03/09/1999US5879413 Cationic diazo dyes for the dyeing of hair
02/1999
02/09/1999US5869627 Water soluble bis-azo dye
01/1999
01/20/1999EP0765154B1 Direct-acting hair colouring agent
01/07/1999EP0888407A1 Azo compound
01/07/1999EP0888406A1 Azo compounds
12/1998
12/01/1998US5844101 Light-fast disazo dyestuffs
12/01/1998US5843218 Bisazo inkjet dyes
10/1998
10/29/1998WO1998047970A1 Water-soluble trisazo compounds, aqueous ink composition and colored article
10/27/1998US5827332 Mixing oil soluble dyes with oils for visibility, simplified detection
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
10/07/1998EP0759956B1 Disazo compound
09/1998
09/30/1998EP0745153B1 Disazo dyes containing a fluorosulphonyl group and use thereof
09/15/1998US5808015 Red fiber reactive, acid dyes for cellulose fibers, cotton, wool, silk, polyamides, polyesters, polyolefins and polyacrylonitrile; colorfastness; brightness; triazine dyes
08/1998
08/19/1998EP0859033A1 Dyes for ink jet printing
08/18/1998US5795971 For paper, cellulose
07/1998
07/21/1998US5782934 Process of dyeing with disazo dyes containing a fluorosulphonyl group and use thereof
07/01/1998EP0851004A1 Disazo dyestuffs for dyeing materials containing cellulose
06/1998
06/04/1998WO1998023690A1 Method for preparing light-absorbing polymeric compositions
05/1998
05/27/1998EP0844289A2 Recording liquid
05/27/1998EP0844288A2 Recording liquid
05/26/1998US5756693 Black colorant for ink jet printing
05/13/1998EP0840766A1 Stabilised dye composition
05/12/1998US5750661 Cationic dye for coloring paper, synthetic polymer textiles or natural fibers; chemical resistance, color/washfastness, solubility
04/1998
04/28/1998US5744591 Red dyestuffs
04/14/1998US5737871 Diazotizing aniline or derivative with sodium nitrate, coupling with phenylalkylalkanolamine ester; marker dye solution is added to petroleum fuel in miscible form, extraction with acid produces chromophoric reaction
03/1998
03/25/1998EP0831131A1 Process for dyeing cellulosic materials with disazo-dyestuffs
03/25/1998EP0831130A1 New light fast disazodyes
03/11/1998EP0827984A1 Amino lower alkylnaphthaline carboxylic acid dyestuffs
02/1998
02/03/1998US5714304 Nonlinear optical media of organosilicon crosslinked polymer
12/1997
12/23/1997US5700296 Azo compound and a polarizing film containing the same
12/16/1997US5698682 Azo compounds and polarizing films using the compounds
12/09/1997US5696243 Diphenylamine compounds, polymers prepared therefrom and non-linear optics devices containing the same
11/1997
11/25/1997US5691459 Disazo dyes containing two carbonylamino groups processes for their preparation and their use
11/12/1997EP0806198A2 Dyeing composition
11/05/1997EP0477373B1 Metal chelate compound and optical recording medium comprising the same
10/1997
10/29/1997EP0803563A1 Method of preparing and utilizing petroleum fuel markers
10/14/1997US5676708 Coloring petroleum products
09/1997
09/17/1997CN1159463A Pyridone-methide azo dyestuffs
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