| Patents for C09B 43 - Preparation of azo dyes from other azo compounds (1,452) |
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| 07/06/2005 | EP1550702A1 Dye composition, ink composition, and method of ink-jet recording |
| 06/09/2005 | US20050120495 Use of a dyestuff for ink jet printing recording materials |
| 06/08/2005 | EP1537180A1 Process for preparing azo compound |
| 06/08/2005 | CN1205271C Anthraquinone-azo dyes and use of such compounds |
| 06/07/2005 | US6903197 Coupling a 1-hydroxy-3,6-sulfonic acid-naphthalene derivative with a nitroaniline comound to form nitro monoazo dye, reducing the resultant dye in aqueous solution |
| 05/26/2005 | WO2005047397A1 A super molecular structure permanent red bbc pigment that is light stabilizing and heat stabilizing mode and its preparation process |
| 05/25/2005 | CN1618898A Process for preparing self-dispersible coloring agent using lewis acids and ink composition comprising the coloring agent |
| 05/18/2005 | CN1616550A Super molecular structure light thermal stable light fast brilliant red BBC dye and its intercalation method |
| 04/27/2005 | EP1525267A1 Anionic monoazo dyes |
| 04/26/2005 | US6884267 2-(4-(3-Aminopyrazol-1-yl)phenylazo)-1,3-dimethyl-3H-imidazol-1-ium perchlorate is a prefered example |
| 04/21/2005 | WO2005035667A1 Dye for anisotropic dye film, dye composition for anisotropic dye film, anisotropic dye film and polarizing device |
| 04/20/2005 | EP1523526A1 Disazo dyes and ink jet inks containing them |
| 04/20/2005 | CN1607220A High light fastness reactive red dyes |
| 04/19/2005 | US6881230 Dyeing composition for dyeing keratinous fibers comprising a cationic azo-dye |
| 04/14/2005 | WO2005033211A1 Azo compound, aqueous dye solutions containing the same, inks and use thereof |
| 04/13/2005 | EP1343849B1 Method of printing sheet-form substrates by the inkjet printing process |
| 04/13/2005 | CN1606603A Use of dyestuffs for printing recording materials |
| 04/06/2005 | EP1337591A4 Polymeric bis-acetoacetanilide azo colorants |
| 04/06/2005 | CN1604944A Acidic mono azo dyestuffs |
| 03/31/2005 | US20050066856 Process for preparing self-dispersible coloring agent using lewis acids and ink composition comprising the coloring agent |
| 03/30/2005 | EP1257601B1 Dyes, inks and their use in ink-jet printing |
| 03/17/2005 | US20050059811 High light fastness reactive red dyes |
| 03/16/2005 | EP1514905A1 High light fastness reactive red dyes |
| 03/15/2005 | US6867286 Triazine dyes for printing |
| 03/12/2005 | CA2480922A1 High light fastness reactive red dyes |
| 03/10/2005 | US20050051052 Self-assembling dyes |
| 03/01/2005 | US6861106 Dichroic dye, composition thereof, and liquid crystal composition and liquid crystal display element containing the same |
| 02/17/2005 | US20050036921 Reaction method using microreactor |
| 02/02/2005 | CN1572363A Reaction method using microreactor |
| 01/27/2005 | WO2005007752A1 Disazo compound and ink composition containing the same |
| 01/27/2005 | CA2532327A1 Disazo compound and ink composition containing using the same |
| 01/20/2005 | WO2005005551A1 Water-soluble macrocyclic azacalixarenes |
| 01/18/2005 | US6844428 For paper, cotton; waterproofing, colorfastness; ink jets |
| 01/12/2005 | EP1495079A1 Acidic mono azo dyestuffs |
| 01/12/2005 | CN1563204A Azo type disperse dyes in use for coloration in acid-alkalinity bath |
| 12/29/2004 | CN1558934A Water-color ink |
| 12/15/2004 | EP1486539A2 Self-assembling dyes |
| 12/09/2004 | US20040244123 hair dye; bis(phenylazo imidazolium, triazolium, or pyridinium) amines or ethers, oxidation base, coupler, oxidizing agent, second dye; improved dye strength, colorfastness; wide range of colors |
| 12/01/2004 | EP1481724A1 Reaction method using microreactor |
| 11/25/2004 | US20040231558 Has a clear hue, high light fastness and high moisture resistance |
| 11/24/2004 | EP1478696A1 Process for the preparation of cationic azo compounds |
| 11/17/2004 | EP1114106B1 Dye compositions, inks and disazo dyes |
| 10/27/2004 | CN1541207A Dyeing compsn. for kerationous fibres comprising particular dicationic diazo dye |
| 10/21/2004 | US20040206270 Ink composition containing a particular type of dye, and corresponding ink-jet printing process |
| 10/21/2004 | US20040205912 used to dye natural or synthetic materials especially paper; dyes are in solution or solid forms so they eliminate dust formation |
| 10/14/2004 | US20040204570 Coupling a 1-hydroxy-3,6-sulfonic acid-naphthalene derivative with a nitroaniline comound to form nitro monoazo dye, reducing the resultant dye in aqueous solution |
| 10/13/2004 | EP1466947A1 AZO compound |
| 10/06/2004 | EP1463781A1 Use of a dyestuff for ink jet printing recording materials |
| 09/29/2004 | CN1533416A Dye incorporating anionic and cationic groups |
| 09/15/2004 | EP1141138B1 Phthalimidyl azo pigments, method for producing same and utilisation thereof |
| 09/02/2004 | US20040168263 As stable as oxidation dyes toward light and also resistant to bad weather, washing and perspiration, and which, in addition, are sufficiently stable in presence of oxidizing and reducing agents to be able to simultaneously obtain lightening |
| 08/26/2004 | US20040164272 crosslinkable liquid crystals and polymerisable dichroic dyes, especially azo or anthraquinone dyes; liquid crystalline polymer film and use in preparation of optical elements and construction of security devices |
| 08/12/2004 | US20040158049 Monoazo and disazo dyes with hydroxynaphthalene aminocarbonyl groups and aminotriazines and salts for liqids used in dyeing and printing, inks or ink jets |
| 08/04/2004 | EP1442082A1 Dyes incorporating anionic and cationic groups |
| 07/28/2004 | EP1441013A1 Watercolor ink |
| 07/22/2004 | US20040143108 Azo dyes |
| 07/15/2004 | US20040135117 Dichroic dye, composition thereof, and liquid crystal composition and liquid crystal display element containing the same |
| 07/15/2004 | US20040134382 comprises a compound with chromophoric groups and hydrazine or hydrazide groups, a liquid medium that comprises water and an organic solvent, an organic solvent free from water, or a low melting point solid |
| 07/14/2004 | EP1218449B1 Monoazo dyestuffs useful for colour filters and ink jet printing |
| 07/14/2004 | CN1513034A Basic mono-and bisazo compounds |
| 07/13/2004 | US6762287 Storage stable concentrates; red shades; dyeing paper, leather and glass fibers |
| 07/06/2004 | US6758890 Ink containing disazo dye exhibits excellent properties in lightfastness, moisture resistance and storage stability; removing impurities eliminates clogging of printer head and enables formation of high quality image without blotting |
| 07/01/2004 | WO2004055121A1 Recording liquid |
| 06/24/2004 | US20040122219 Azo compound and process of producing the same, and novel compound and process of producing azo compounds using the same |
| 06/23/2004 | CN1507478A 二色性混合物 Dichroism mixture |
| 06/17/2004 | US20040111813 Use of disazo compounds |
| 06/10/2004 | US20040107513 2-[4-(3-Hydroxypyrrolidine-1-yl)phenylazo)-1,3-dimethyl-3H-imidazol-1-ium perchlorate, for example; chromatic direct dyes; oxidation hair dyes; colorfastness; washfastness; stability; waterproofing |
| 06/02/2004 | CN1501962A Azo compound and process of producing the same, amd novel compound and process of producing azo compounds using the same |
| 05/27/2004 | WO2004044058A1 Phthalimidyl-azo dyes, process for their preparation and their use |
| 05/27/2004 | US20040099180 Colors materials comprising azo dyes having photostability, waterproofing, hermetic sealing, shelf life and colorfastness |
| 05/26/2004 | CN1500125A Aqueous ink compsn.water-soluble dye compsn. and ink-jet recording method |
| 05/26/2004 | CN1500124A Azo dyes |
| 05/20/2004 | US20040097716 Phthalimidyl azo dyes, process for the preparation thereof and the use thereof |
| 05/20/2004 | US20040093675 Dyeing composition for dyeing kerationou fibres comprising a cationic azo-dye |
| 05/04/2004 | US6730780 Oil-soluble dye prepared by amidation of a water-soluble dye having at least one sulfonate and/or carboxyl group |
| 04/29/2004 | WO2004035690A1 Azo compounds |
| 04/27/2004 | US6727351 Azoxy dyes and their Cu complexes |
| 04/22/2004 | WO2004033559A1 Monoazo compounds and inks containing them |
| 04/21/2004 | EP1411089A1 Azo compounds |
| 04/21/2004 | CN1491259A Phthalimidyl azo dyes, process for preparation thereof and the use thereof |
| 04/20/2004 | US6723835 Printing dye; color filter; yellow; carboxy groups ortho to the azo linkage provide lightfastness versus related ortho-sulpho analogues, with no loss in brightness |
| 04/14/2004 | EP1228149B1 Disazo dyestuffs for ink jet printing |
| 04/08/2004 | WO2002070609A8 Ink jet printing composition comprising a dye containing hydrazine or hydrazide |
| 04/08/2004 | US20040068102 Azo dyes useful in ink jet ink compositions |
| 04/01/2004 | WO2004026964A1 Dye composition, ink composition, and method of ink-jet recording |
| 04/01/2004 | CA2499153A1 Dye composition, ink composition, and method of ink-jet recording |
| 03/25/2004 | WO2004024827A1 Process for preparing azo compound |
| 03/24/2004 | EP1399425A1 Dyeing composition for keratinous fibres comprising a particular dicationic diazo dye |
| 03/17/2004 | EP1397434A1 Basic mono- and bisazo compounds |
| 03/17/2004 | CN1483066A Method of printing sheet-form substrates by the inkjet printing process |
| 03/11/2004 | US20040049020 Especially for dyeing paper; red dyeings with good fastness |
| 03/03/2004 | EP1149135B1 Black-dyeing inks and their use |
| 02/26/2004 | US20040039182 Mono-and bis-hydrazone pigments |
| 02/25/2004 | CN1478131A Use of disazo compound |
| 02/25/2004 | CN1478130A Polymeric bis-acetoacetanilide azo colorants |
| 02/24/2004 | US6696553 Anionic; coloring nonfibrous substrates such as anodized aluminium or water soluble plastics |
| 02/24/2004 | US6695899 Dyes of the invention may be used as the sole colorant in inks because of their attractive black shade |
| 02/19/2004 | US20040032474 Method of printing sheet-form substrates by the inkjet printing process |
| 02/12/2004 | WO2004013233A1 Anionic monoazo dyes |
| 02/12/2004 | WO2004013232A1 Trisazo compounds, water-base ink compositions, and colored articles |