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Class Information
Number: 534/589
Name: Organic compounds -- part of the class 532-570 series > Organic compounds (class 532, subclass 1) > Azo > Process utilizing azo compound as reactant > Formation of quaternary ammonium or hydrazinium group
Description: Processes for the preparation of quaternary ammonium or quaternary hydrazinium compounds.

Patents under this class:
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Patent Number Title Of Patent Date Issued
7648790 Electrolyte for fuel cell and fuel cell employing the same Jan. 19, 2010
6130319 Methods of making cationic azo dye compounds having flocculating properties using reactive dyes Oct. 10, 2000
5929216 Benzothiazolium containing azo dyes useful for dyeing polyacrylonitrile Jul. 27, 1999
5708151 Cationic imidazole azo dyes Jan. 13, 1998
5635607 Cationic or basic azo dyes consisting of an amino benzothiazole diazo component and a disubstituted aniline component, which dyes contain at least one aromatic radical Jun. 3, 1997
5436323 Cationic 1,3,4-thiadiazole dyestuffs Jul. 25, 1995
5290347 Salt-forming type dye, and its concentrated solution composition and ink composition Mar. 1, 1994
5284939 Process for the preparation of highly concentrated solutions of cationic azo dyes Feb. 8, 1994
5264560 Preparation of quaternized azo dyes Nov. 23, 1993
5239063 Fibre reactive azo dyestuffs Aug. 24, 1993
5208325 Cationic 1,3,4-thiadiazole dyestuffs May. 4, 1993
5175260 Disazo dyes with hydroxysulfonylnaphthalene coupling components Dec. 29, 1992
4997918 Benzthiazolium azo dyes Mar. 5, 1991
4992495 Process for coloring high-molecular weight organic material using amine salts of azo pigments based on pyrazolone derivatives Feb. 12, 1991
4956456 Betaine-type cyan monoazo dyes for dying and printing fibrous materials Sep. 11, 1990
4940783 Disazo containing diaminostilbene as diazo component and an aniline coupling component bearing a cationic alkyl ammonium group Jul. 10, 1990
4925926 Preparation of cationic azo or hydrazone dyes in which the alkylation and the separation of the cationic dye are carried out continuously May. 15, 1990
4880916 Cationic azo dyes containing 2(p-aminophenyl)oxazolo [4,5-b]pyridines and similar compounds as diazo components Nov. 14, 1989
4845202 Water-soluble disazo compounds containing 3-carboxy or 3-carbamoylpyridium-s-triazinyl groups and fiber-reactive groups of the vinyl sulfone series suitable as dyestuffs Jul. 4, 1989
4839468 N-(hydroxy-sulpho-naphthyamino-triazinyl)-arylene-diamines Jun. 13, 1989
4820806 Metal-free azo compounds containing a vinylsulfonyl group and at least one basic group and 1:1 and 1:2 metal complexes thereof Apr. 11, 1989
4818815 Cationic 1,2,3-thiadiazole-azo-aniline or tetrahydroquinoline compounds Apr. 4, 1989
4760132 Process for preparing cationic hydrazone dyestuffs Jul. 26, 1988
4754022 Cationic dyes from diazotized 5-aminoisothiazoles and tetrahydroquinolines or indolines Jun. 28, 1988
4754021 Methine-azo compounds containing cyclic ammonium groups Jun. 28, 1988
4742162 Azo-stibene condensates as leather dyes May. 3, 1988
4736021 4-Benzothiazolyl phenyl azo dyes Apr. 5, 1988
4694075 Bisazo compounds containing anthranilic acid and thiazole moieties Sep. 15, 1987
4687842 Monoazo compounds having an imidazolium-2 group linked through an azo radical to a substituted phenyl group Aug. 18, 1987
4670546 Disazo and polyazo compounds containing at least two cationic groups in metal-free or 1:1 or 1:2 metal complex form Jun. 2, 1987
4665162 1:1 and 1:2 metal complexes of sulfo group-free azo compound having on average at least 1.3 basic water-solubilizing groups May. 12, 1987
4654384 Basic water-soluble bis-(.beta.-azo-.alpha.-naphtholamino)-triazine compounds Mar. 31, 1987
4638053 Process for the preparation of chlorozincate salts of benzo thiazolium azo dyestuffs by alkylating with dialkylsulfate in aqueous medium in the presence of Zn-containing acid acceptor at Jan. 20, 1987
4626589 Organic dye compound having both pyridiniotriazinyl and vinylsulfone type fiber-reactive groups Dec. 2, 1986
4587292 Sulfo group-free azo compounds having on average at least 1.3 basic water-solubilizing groups in metal-free, 1:1 metal complex or 1:2 metal complex form May. 6, 1986
4581445 Cationic benzothiazole disazo compounds Apr. 8, 1986
4525583 Quaternary ammonium substituted benzothiazolylphenyl azo pyrimidine dyes Jun. 25, 1985
4517358 Disazo bis-benzthiazolyl compounds May. 14, 1985
4432897 Cationic thiadiazolyl triazene dyestuffs Feb. 21, 1984
4432900 Cationic dyestuff printing inks Feb. 21, 1984
4424349 Process for the preparation of cationic hydrazone dyestuffs Jan. 3, 1984
4392998 One pot diazotization, coupling and quaternization of aminotriazoles Jul. 12, 1983
4376728 Process for the preparation of cationic alkylarylhydrazone dyestuffs and color bases thereof Mar. 15, 1983
4372886 Process for the production of carbinol bases from indoline compounds Feb. 8, 1983
4364738 Crystalline bromide or iodide salts of triazole dyes for polyacrylonitrile Dec. 21, 1982
4359419 Bleed-fast cationic dye stuffs Nov. 16, 1982
4353824 Chromophoric cephalosporins Oct. 12, 1982
4344879 Quaternary and basic azamethine compounds and their use as colorants Aug. 17, 1982
4343936 Process for the preparation of cationic dyestuffs Aug. 10, 1982
4342867 Process for the preparation of cationic dyestuffs Aug. 3, 1982

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