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Class Information
Number: 534/581
Name: Organic compounds -- part of the class 532-570 series > Organic compounds (class 532, subclass 1) > Azo > Formation of azo group by coupling diazonium compound with coupling component in presence of an additional organic compound
Description: Processes wherein the azo group is formed by the coupling of a diazonium compound with a coupling component in the presence of an additional organic compound.










Patents under this class:
1 2 3 4 5 6 7

Patent Number Title Of Patent Date Issued
8273877 Substituted tetraazapentalenes Sep. 25, 2012
7927384 Acid dyes Apr. 19, 2011
7772376 Manufacturing process Aug. 10, 2010
7754273 Method of printing a time-temperature indicator based on azo coupling reactions onto a susbtrate Jul. 13, 2010
7708824 C. I. pigment red 57:1 and production process thereof May. 4, 2010
7521545 Azo compounds and process for production thereof Apr. 21, 2009
7439339 Azo coupling reactions of hydrophobic compounds Oct. 21, 2008
7402369 Mono azo iron complex compound, and charge controlling agent and toner using the same Jul. 22, 2008
7074906 Organic solvent-free process for the preparation of 2-(2-nitrophenylazo)phenols Jul. 11, 2006
6923856 Method of improving pigment fluorescence Aug. 2, 2005
6913641 Laked monoazo pigments based on naphtholsulfonic acids Jul. 5, 2005
6913640 Single-phase mixed crystals of laked monoazo dyes Jul. 5, 2005
6902612 Heat stable laked monoazo red pigment Jun. 7, 2005
6756486 Non-migrating metallized disazo green shade yellow pigment Jun. 29, 2004
6756485 Process for preparing a monoazo metal complex salt compound for charge control agent and toner for developing electrostatic images Jun. 29, 2004
6706863 Organic pigment with high transparency and hydrophobicity Mar. 16, 2004
6576748 Method for making dimeric azo pyridone colorants Jun. 10, 2003
6566507 Processes for the preparation of benzotriazole UV absorbers May. 20, 2003
6375733 Heat stable monoazo magenta pigment compositions Apr. 23, 2002
6281338 Mono- and dipotassium salts of azo compounds Aug. 28, 2001
6254671 Very green-shade yellow metallized disazo pigment Jul. 3, 2001
6235100 Metallized azo yellow pigments May. 22, 2001
6150509 Water-insoluble yellow monoazo pigment Nov. 21, 2000
6133432 Processes for preparing pesticidal intermediates Oct. 17, 2000
6111083 Disperse dyes Aug. 29, 2000
6090927 Intermediates for preparing pyrazole derivatives Jul. 18, 2000
6028178 Pigment for electrophotographic toners and developers Feb. 22, 2000
5998592 Monoazo dyes containing a fluorosulphonyl group and use thereof Dec. 7, 1999
5973126 Azo compounds and process for producing the same Oct. 26, 1999
5964899 Azo dyes, their production and use Oct. 12, 1999
5942604 Azo dye mixtures Aug. 24, 1999
5889162 Strong green-shade yellow disazo pigment Mar. 30, 1999
5869628 Disperse dyes Feb. 9, 1999
5852179 Preparation of disperse azo dyestuffs in the presence of alkoxylated acetylenic diols Dec. 22, 1998
5824117 Nitrobenzisothiazole azo dyestuff Oct. 20, 1998
5770708 Preparation of phenylazonaphthalenes Jun. 23, 1998
5747566 Water-insoluble azo colorants based on aminoquinazolinediones May. 5, 1998
5744588 Blue type disperse dye mixture and process for its preparation Apr. 28, 1998
5697985 Process for the preparation storage-stable dye dispersions Dec. 16, 1997
5677435 Heat stable monoazo red pigment compositions Oct. 14, 1997
5597905 Preparation of benzothiazolylazoanilines Jan. 28, 1997
5578711 Process for the preparation of dyestuffs Nov. 26, 1996
5541299 Process for the preparation of dyestuffs Jul. 30, 1996
5532344 Process for producing a monoazodye by diazo-coupling of a p-nitroanaline derivative with a N,N-substituted analine derivative Jul. 2, 1996
5508389 Process for producing concentrated aqueous solutions of anionic azo dyes Apr. 16, 1996
5502171 Process for the preparation of dyestuffs Mar. 26, 1996
5502173 Process for the preparation of a substituted 2-amino-1-sulphonaphthalene Mar. 26, 1996
5493011 Monoazo or disazo pigments based on (benoxazol-2-yl)- or (benzimidazol-2-yl)-arylacetamides Feb. 20, 1996
5484900 1:2 chromium complex dyestuffs Jan. 16, 1996
5459245 Fluorotriazine containing naphthylazonaphthyl monoazo reactive dyes Oct. 17, 1995

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