| Patents for C09B 33 - Disazo or polyazo dyes of the types a k b, a b k c, or the like, prepared by diazotising and coupling (1,032) |
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| 09/05/1978 | US4111649 Dyestuff preparations and processes for their production |
| 07/11/1978 | US4100157 β-Crystalline form of the pigment obtained by coupling diazotized 1-aminobenzene-2-carboxylic acid methyl ester with 2,3-oxynaphthoic acid |
| 07/11/1978 | US4100156 Chlorine-containing disaza pigments |
| 07/04/1978 | US4098569 Stable concentrated liquid preparation of paper dyes of the disazo class |
| 04/11/1978 | US4083842 Diazo compounds containing two optionally substituted-5-arylazo-6-hydroxypyridone-2 radicals linked through their nitrogen atoms |
| 04/11/1978 | US4083688 Disazo pyrazolyl dyed polyester fibers |
| 03/28/1978 | US4081439 Aromatic disazo pigments |
| 01/24/1978 | US4070353 For plastics and printing inks, yellow to orange shades |
| 12/27/1977 | US4065449 Tetrachloro substituted disazo pigments |
| 12/27/1977 | US4065448 Tertiary alkyl substituted disazo pigments |
| 12/13/1977 | US4062838 Disazo pigments containing acylamino groups |
| 10/25/1977 | US4055559 Acetylacetanilido |
| 10/25/1977 | US4055556 Pigments |
| 10/11/1977 | US4053464 Disazo pigments containing ether substituted alkoxy carbonyl groups |
| 09/27/1977 | US4051122 Disazo pigments containing tetracarboxylic acid ester groups |
| 09/27/1977 | US4051121 Azo pigments having two 2-halo-5-trifluoromethylphenyl diazo component radicals and a bis-(2-hydroxynaphthoyl-3-amino)-2,5-dihalobenzene coupling component radical |
| 09/13/1977 | US4048152 Modified form of disazo pigment CI 20040 |
| 09/13/1977 | US4047944 Electrophoretic migration imaging process with neutral density bisazo pigments |
| 09/06/1977 | US4046755 Cellulose ethers, polyamides, polyurethanes, acrylics |
| 06/07/1977 | US4028323 With a substituted aminobenzene |
| 05/17/1977 | US4023924 Concentrated aqueous dye compositions containing a low molecular weight amide and their use for dyeing paper |
| 04/12/1977 | US4017256 Fiber dyeable with disperse dyes and fiber dyeable with reactive dyes |
| 01/18/1977 | US4003886 Tetracarboxylic acid ester substituted disazo pigments |
| 01/18/1977 | US4003885 Tetrakisazo compounds having a 1-hydroxy-2-(4'-(2"-sulfoanilino)phenylazo)-3,6-disulfo-7-(optionally 2'-substituted phenylazo)-8-aminonaphthalene middle component |
| 12/14/1976 | US3997521 Bis-(dialkoxycarbonylphenylazo)acetoacetamidoarylenes |
| 10/26/1976 | US3988312 Tetrakisazo pigments prepared by reacting an aminoazobenzene and an aryl-bis-acetoacetylamino derivative |
| 09/14/1976 | US3980675 Hydrolysis of a diacetyl dimer in an acid catalyst |
| 08/31/1976 | US3978038 Disazo pigments containing at least one nitro group on the diazo component |
| 05/11/1976 | US3956266 Disazo dyes |
| 05/04/1976 | US3954398 Polyester fibers dyed with a disazo disperse dyestuff |
| 04/20/1976 | US3951943 Coupling process in the preparation of disazo diimides |
| 03/09/1976 | US3943122 Polyazo compounds containing benzhydrol as a component |