| Patents for C09B 41 - Special methods of performing the coupling reaction (551) |
|---|
| 05/23/2002 | CA2427904A1 Method of improving pigment fluorescence |
| 05/16/2002 | US20020058794 Preparation of disazo condensation pigments in microreactors |
| 05/09/2002 | US20020055619 Process for preparing azo colorants |
| 04/11/2002 | DE10049200A1 Verfahren zur Herstellung von Azofarbmitteln A process for preparing azo colorants |
| 04/10/2002 | EP1195411A1 Process for the preparation of azo colourants |
| 03/06/2002 | CN1080288C Production of pigments |
| 02/28/2002 | DE10040100A1 Production of azo dyes and pigments, useful e.g. in plastics, resin, lacquer, paint, electrophotographic toner or developer, ink or dyeing or printing, uses microreactor in one or more stages |
| 02/12/2002 | US6346361 Method for synthesizing polymeric AZO dyes |
| 01/10/2002 | DE10032019A1 Verfahren zur Herstellung von Disazokondensationspigmenten in Mikroreaktoren A process for preparing disazo condensation pigments in microreactors |
| 01/09/2002 | EP1169393A1 Acetoacetylarylide suspensions in pigment applications |
| 01/09/2002 | CN1330115A Method for preparting tetrazo condensation pigment in micro-reactor |
| 01/02/2002 | EP1167460A1 Process for the preparation of disazo condensation pigments in microreactors |
| 12/19/2001 | CN1076370C Process for preparation of highly coloured diazo pigment mixtures |
| 12/12/2001 | CN1076034C Mixtures monoazopyridone dyes |
| 11/15/2001 | US20010041793 Coupling |
| 10/17/2001 | EP1146088A1 Method of producing disazo pigment |
| 10/17/2001 | CN1318089A Strong grene-shade yellow disazo pigment |
| 10/17/2001 | CN1317517A Method for preparing tetrazo pigment |
| 10/16/2001 | US6303762 Coupling a tetrazo benzidines and a mixture of n-phenylacetoacetamides |
| 10/11/2001 | US20010029294 Preparation of azo colorants in microreactors |
| 09/26/2001 | CN1314437A Raw material compound and its producing method |
| 09/12/2001 | CN1070893C Nitrobenzene isothiazole azo-dye |
| 08/23/2001 | DE10005550A1 Production of azo dyes and pigments, useful e.g. in plastics, resin, lacquer, paint, electrophotographic toner or developer, ink or dyeing or printing, uses microreactor in one or more stages |
| 08/16/2001 | WO2001059013A1 Method for production of azo dyes in microreactors |
| 06/06/2001 | EP1104444A1 Strong green-shade yellow disazo pigment |
| 04/12/2001 | WO2001025341A1 A method for synthesizing polymeric azo dyes |
| 03/01/2001 | WO2001014319A1 4,6-bis(substituted)phenylazoresorcinol and process for producing 4,6-diaminoresorcinol |
| 01/02/2001 | US6168895 An electrographic toner contains an azo dye and a charge control agent |
| 11/23/2000 | DE19922825A1 Neue fluortriazinhaltige brillantgelbe Farbstoffe, Verfahren zu ihrer Herstellung und ihre Verwendung zum Färben von hydroxy- und amidgruppenhaltigen Materialien New fluortriazinhaltige brilliant yellow dyes, processes for their preparation and their use for dyeing hydroxyl- and amido-containing materials |
| 11/22/2000 | EP1054041A1 Brilliant yellow dyes containing a fluorotriazine group, process for their preparation and their use for dyeing materials containing hydroxy- and amido-groups |
| 10/19/2000 | WO2000061688A1 Acetoacetylarylide suspensions in pigment applications |
| 09/19/2000 | US6120561 Process for the preparation of low-salt, liquid dyestuff preparations |
| 08/09/2000 | CN1262292A Process for preparing organic yellow benzimidazoleone pigments |
| 08/08/2000 | US6099635 Acetoacetylated suspensions in pigment applications |
| 08/01/2000 | US6096801 Pigment compositions |
| 08/01/2000 | CA2063430C Process for making azo-pigments |
| 05/31/2000 | EP0815173B1 Monoazo dyes stable under dyeing conditions, their production and use |
| 02/29/2000 | CA2000155C Production of pigment compositions |
| 02/24/2000 | WO2000009614A1 Strong green-shade yellow disazo pigment |
| 02/22/2000 | US6028178 Pigment for electrophotographic toners and developers |
| 12/15/1999 | CN1238357A Preparation of disperse azo dyestuffs in presence of alkoxylated acetylenic diols |
| 12/08/1999 | EP0962498A2 Preparation of disperse azo dyestuffs in the presence of alkoxylated acetylenic diols |
| 09/28/1999 | US5958128 Method of manufacturing a disazo pigment and disazo pigment manufactured thereby |
| 08/10/1999 | US5935274 Textile fiber dyes with good build-up, good fastnesses to light, sublimation and washing |
| 06/29/1999 | US5917121 Coupling diazotised 2-chloro-4-nitroaniline onto n-(2-cyanoethyl)-n-(2-phenylethyl)aniline |
| 03/30/1999 | US5889163 Method for producing azo dye compounds |
| 03/30/1999 | US5889162 Coupling a diazonium component made from one or more aromatic amines such as 2-ethoxyaniline with at least one coupling agent; suitable for use in plastics, paints and inks |
| 03/16/1999 | US5883167 Process for the preparation of highly coloured diazo pigment mixtures |
| 03/16/1999 | US5882394 Preparing lake pigment of azo dye in presence of a rosin |
| 12/22/1998 | US5852179 Preparation of disperse azo dyestuffs in the presence of alkoxylated acetylenic diols |
| 12/09/1998 | EP0882772A1 Pigment compositions |
| 11/26/1998 | DE19721619A1 Diazotisation of solid aromatic amine and nitrogen di:oxide, with high productivity |
| 10/20/1998 | US5824117 Nitrobenzisothiazole azo dyestuff |
| 09/01/1998 | US5800609 Pigment with resin and surfactant |
| 06/23/1998 | US5770708 Diazotization of an aniline with neopentylglycol dinitrite; coupling with beta-naphthol |
| 04/14/1998 | US5737871 Diazotizing aniline or derivative with sodium nitrate, coupling with phenylalkylalkanolamine ester; marker dye solution is added to petroleum fuel in miscible form, extraction with acid produces chromophoric reaction |
| 03/04/1998 | EP0826742A1 Process for the preparation of disazo pigments and disazo pigments prepared by the process |
| 02/18/1998 | CN1173520A Process for preparation of highly coloured diazo pigment mixtures |
| 02/10/1998 | US5716445 Pigment |
| 02/04/1998 | EP0822235A2 Process for the manufacture of disazo pigment mixtures with a high tinctorial power |
| 01/07/1998 | EP0815173A1 Colour-fast monoazo dyes, their production and use |
| 12/03/1997 | EP0810264A2 Process for the manufacture of phenyl azo naphthalene |
| 11/19/1997 | CN1165162A Mixtures of monoazopyridone dyes |
| 11/12/1997 | CN1164550A Pigment |
| 10/29/1997 | EP0803563A1 Method of preparing and utilizing petroleum fuel markers |
| 10/22/1997 | EP0802240A2 Process for the manufacture of liquid dyestuff preparations with a low salt content |
| 10/18/1997 | CA2202718A1 Process for the preparation of low-salt, liquid dyestuff preparations |
| 10/01/1997 | EP0798353A1 Arylamines as marking agents for wood |
| 08/28/1997 | WO1997031067A1 Process for the preparation of disazo pigments and disazo pigments prepared by the process |
| 08/20/1997 | EP0790282A2 Polymorph of a yellow diarylide pigment |
| 08/14/1997 | CA2197389A1 Polymorph of a yellow diarylide pigment |
| 07/16/1997 | EP0784086A1 Aqueous pigment paste for offset ink, process for producing the paste, and use thereof |
| 06/26/1997 | DE19547637A1 Novel beta and gamma-modifications of known mono:azo dye |
| 06/04/1997 | EP0776948A1 Mixtures of pyridone monoazo dyestuffs |
| 04/30/1997 | CN1148610A Nitrobenzene isothiazole azo-dye |
| 04/22/1997 | US5623060 Dye mixture containing at least four diazo dyes having the same color with a diaminopyridine coupling component |
| 02/12/1997 | EP0758004A1 Compositions of pigments |
| 02/12/1997 | EP0716671B1 Dye mixtures containing azo dyes having the same colour and a coupling component from the diaminopyridine series |
| 01/22/1997 | CN1140733A Production of pigments |
| 01/16/1997 | WO1997001607A1 Aqueous pigment paste for offset ink, process for producing the paste, and use thereof |
| 01/13/1997 | CA2180928A1 Production of pigments |
| 01/02/1997 | EP0751187A1 Nitrobenzisothiazol azo dye |
| 12/11/1996 | EP0746540A1 Preparation of 4,6-diaminoresorcinol through a bisazoarylresorcinol intermediate |
| 11/26/1996 | US5578711 Process for the preparation of dyestuffs |
| 09/26/1996 | WO1996029368A1 Colour-fast monoazo dyes, their production and use |
| 09/26/1996 | DE19510097A1 Novel beta and gamma-modifications of known mono:azo dye |
| 09/24/1996 | US5559216 Azo coupling |
| 09/04/1996 | CN1130391A Dye mixtures containing azo dyes having the same colour and coupling component from diaminopyridine series |
| 09/03/1996 | US5552130 Process for the continuous preparation of nitrosyl chloride |
| 08/14/1996 | DE4447593A1 Transparent strong yellow azo pigment as powder with large surface area |
| 07/30/1996 | US5541299 Reaction of diazo compound with coupler and nitrate |
| 07/02/1996 | US5532344 Process for producing a monoazodye by diazo-coupling of a p-nitroanaline derivative with a N,N-substituted analine derivative |
| 06/26/1996 | EP0718376A1 Colour-fast monoazo dye, its manufacture and its use |
| 06/20/1996 | DE4444901A1 Economical, ecologically friendly prepn. of copper complex dis:azo dyes |
| 06/19/1996 | EP0716671A1 Dye mixtures containing azo dyes having the same colour and a coupling component from the diaminopyridine series |
| 04/16/1996 | US5508389 Carrying out diazotization or coupling in the presence of an auxilliary such as a naphthalenesulfonic acid-formaldehyde condensation product which exerts a viscosity-reducing effect on pasty phases |
| 04/10/1996 | EP0705886A2 Pigments for electrophotographic toners and developers |
| 03/26/1996 | US5502171 Reacting heterocyclic diazo compound with heterocyclic coupler |
| 02/20/1996 | US5493011 Monoazo or disazo pigments based on (benoxazol-2-yl)- or (benzimidazol-2-yl)-arylacetamides |
| 11/08/1995 | EP0680928A1 Process for the continuous preparation of nitrosyl chloride |