| Patents for C09B 44 - Azo dyes containing onium groups (862) |
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| 04/11/1978 | US4083847 Transiently water-soluble disperse mono-azo dyes containing a diamino-methylene-carbacyl group |
| 04/11/1978 | US4083688 Disazo pyrazolyl dyed polyester fibers |
| 04/04/1978 | US4082740 Quaternary basic azodyestuffs containing a propenyl amino radical |
| 03/28/1978 | US4081436 Process for dry quaternization of azo compounds |
| 01/10/1978 | US4068085 Yellow and red on polyesters and acrylics |
| 01/03/1978 | US4066637 Basic diaminopyridine-(3)-azo dyestuffs |
| 12/27/1977 | US4065500 Water-soluble quaternary ammonium azo dyestuffs |
| 11/08/1977 | US4057539 Azo compounds containing a naphthalic imide coupler |
| 11/08/1977 | US4057388 Dry heat process for dyeing and printing organic material which can be dyed with cationic dyestuffs |
| 09/27/1977 | US4051117 Triazole-azo-phenyl cationic dyestuffs |
| 09/27/1977 | US4051084 Benzothiazole |
| 09/13/1977 | US4048151 Azo dyes, nitrogen heterocycles, polymers |
| 09/06/1977 | US4046752 Process for preparing an azo compound from a 2-aminothiazole diazo component |
| 09/06/1977 | US4046502 Basic disazo dyes having two 2-hydroxy-3-substituted carbamoylnaphthyl-1-azophenyl groups for dyeing paper |
| 08/02/1977 | US4039539 1,2,4-Triazole-azo-aniline cationic dyestuffs |
| 08/02/1977 | US4039526 Cationic dyestuffs containing quaternized benzthiazole and p-substituted amino azo phenyl moieties |
| 07/19/1977 | US4036826 Cationic azo dyestuffs with a hydroxyalkylated ammonium group |
| 07/05/1977 | US4033943 Fiber reactive water soluble 2,4,6-triamino, 3-cyano pyridine-(5) azo dyestuffs |
| 06/28/1977 | US4032532 1-aminoalkylene-3-cyano-4-methyl-6-hydroxy-1,2-dihydropyrid-2-ones |
| 06/07/1977 | US4028323 With a substituted aminobenzene |
| 06/07/1977 | US4028321 Dyeing polyamides and polyesters |
| 05/31/1977 | US4026885 Process for the manufacture of cationic hydrazone dyes |
| 05/24/1977 | US4025301 Azo dyes derived from 3-amino pyridine in hair dye compositions |
| 04/26/1977 | US4020063 Oxadiazepine cationic dyestuffs |
| 04/12/1977 | US4017561 Acrylonitrile-vinyl chloride copolymer, copolymer containing chlorine and sulfonate or sulfate groups |
| 04/12/1977 | US4017479 Cationic indazole-azo-5-amino pyrazole dyestuffs |
| 03/29/1977 | US4014958 Dry-spun modacrylic filaments with improved coloristic properties |
| 03/29/1977 | US4014864 Heterocyclic substituted azo dyestuff |
| 03/22/1977 | US4013631 Synthetic fibers |
| 02/22/1977 | US4009158 Mixtures of azo compounds having a 2-nitro-4-phenylsulfamoyldiphenyl amine nucleus |
| 02/01/1977 | US4006127 Cationic diazacyanine dyestuffs |
| 01/18/1977 | US4003944 Preparation of 2,4-dicyano-3,5-dimethylaniline |
| 01/11/1977 | US4002604 Azo dyestuff including a 1,3 or 1,4-benzodioxan ring structure fused to a thiazole ring |
| 12/21/1976 | US3998803 Textiles |
| 12/14/1976 | US3997519 Method of producing quaternary pyridinium compounds |
| 12/07/1976 | US3996282 Cationic dyes |
| 11/09/1976 | US3991043 Quaternization of benzthiazole-azo compounds |
| 11/09/1976 | US3991042 Basic azo dyestuffs containing a benzthiazole and a tetrahydroquinoline nucleus |
| 10/26/1976 | US3988311 Polyester textiles |
| 10/19/1976 | US3987022 Yellow to orange disazo cationic dyes containing two heterocyclic quaternary ammonium groups |
| 09/14/1976 | US3980632 Basic azo dyes having a quaternized s-triazolo-[2,3-a]-pyrimidine diazo component radical |
| 08/31/1976 | US3977827 Process for dyeing acid-modified polyester fibers |
| 08/17/1976 | US3975379 Dihydroindoles and indolenine dyestuffs |
| 07/27/1976 | US3971771 Dyes for polyesters |
| 07/27/1976 | US3971740 Dyes for polyester fibers |
| 06/29/1976 | US3966706 2,6-Dihydroxy-3-cyano-4-methylpyridine containing azo dyes which contain a functional amino group |
| 05/25/1976 | US3958287 Dischargeable black dyeing on acid modified polyester fiber |
| 05/18/1976 | US3957752 Quaternized azoanilino toluene sulfonamidoalkylene-amine dyes |
| 05/18/1976 | US3957747 6-hydroxypyrid-2-one azo dyestuffs |
| 05/11/1976 | US3956271 One step |
| 05/04/1976 | US3954398 Polyester fibers dyed with a disazo disperse dyestuff |
| 04/06/1976 | US3948878 Pyrazolium-azo-phenyl compounds |
| 04/06/1976 | US3948877 Polyacrylonitrile, acid modified polyesters or polyamides |
| 04/06/1976 | US3948598 Black-dyeing process of basic dyeable polyester fibers |
| 03/23/1976 | US3945991 Heterocyclic azo compounds containing a quaternated hydrazide group |
| 03/09/1976 | US3942946 Black dyeing of acid-modified polyester fiber |
| 02/17/1976 | US3939142 Phenylazophenyl dyestuff |
| 02/03/1976 | US3936435 Cationic heterocyclic-azo-heterocyclic compounds from 5-aminoimidazo-(1,2-A)pyridines |
| 01/27/1976 | US3935183 Indazole-azo phenyl compounds |
| 01/27/1976 | US3935182 Water-soluble quaternary ammonium heterocyclic azo dyestuffs |
| 01/20/1976 | US3933787 Dyeing and printing paper |
| 01/13/1976 | US3932377 For polyacrylonitrile |