| Patents for C09B 48 - Quinacridones (562) |
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| 01/09/2002 | CN1330116A Conditioning of organic pigment |
| 01/02/2002 | EP1167461A2 Process for conditioning organic pigments |
| 01/02/2002 | EP1165696A1 Pigment compositions and process of shading |
| 01/02/2002 | CN1077124C Oxidation process for preparing quinacridone pigments |
| 12/19/2001 | EP1163294A1 Crimson-colored pigment composition and the utilization thereof |
| 11/27/2001 | US6323342 Useful for coloring coating formulations such as automotive paints, and plastics |
| 11/08/2001 | US20010039358 Chromophores containing carbamate groups exhibiting high fluorescence in ultraviolet range; heat sensitive, photosensitive, chemosensitive recording material; photoluminescence, electroluminescence |
| 11/06/2001 | US6313300 Oxidation process for preparing quinacridone pigments |
| 11/06/2001 | US6312512 Quinacridone mixed-crystal pigments of the gamma phase |
| 09/20/2001 | US20010022150 Pigment particle growth and/or crystal phase directors |
| 09/19/2001 | CN1071365C Process for preparing quinacridones |
| 09/04/2001 | US6284890 Aqueous process for the preparation of linear quinacridones having a reduced particle size |
| 08/23/2001 | US20010016655 6,13-dihydroqinacridone derivative is dissolved in concentrated sulfuric acid, the intermediate selected from a aromatic, cyclo-hetero aliphatic group or heteroaromatic group and para-formaldehyde is added, heating, precipitating |
| 08/07/2001 | US6271401 Fluorescent anthraquinoid pigments |
| 07/24/2001 | US6264733 Useful when synthesis of pigment; added for heat stability, rheological and flocculation properties of pigment particles |
| 07/17/2001 | US6261359 Soluble chromophores |
| 06/26/2001 | US6251553 Use of mixed-crystal pigments of the quinacridone series in electrophotographic toners and developers, powder coatings and inkjet inks |
| 06/05/2001 | US6241814 Cyclizing of dianilinoterephthalic acid with polyphosphoric acid, then hydrolyzing ring closure mixture which is metered into water or phophoric acid; environment-friendly |
| 05/01/2001 | US6225472 Controlls growth/crystallizaiton of pigment particles; for synthesis or finishing of organic pigments |
| 04/24/2001 | US6222047 Pyrocarbonic acid diesters and the preparation and use thereof |
| 04/18/2001 | EP0968250B1 Soluble chromophores having improved solubilising groups |
| 03/14/2001 | EP1083176A1 Catalyzed Oxidation process for preparing quinacridone pigments uisng a polyalkylene glycol medium |
| 03/14/2001 | CN1287137A Oxidation process for producing quinacridineone pigment |
| 03/07/2001 | EP1081195A2 Process for the manufacture of pigment granules |
| 03/07/2001 | CA2317324A1 Oxidation process for preparing quinacridone pigments |
| 03/01/2001 | DE19941061A1 Verfahren zur Herstellung von Pigmentgranulaten Process for the preparation of pigment granules |
| 02/14/2001 | CN1283655A Gamma-quinacridinelone pigment |
| 02/07/2001 | EP1074587A2 Gamma quinacridone pigment |
| 02/05/2001 | CA2314917A1 Gamma quinacridone pigment |
| 01/17/2001 | EP1069162A2 Process for the continuous preparation of quinacridones |
| 01/17/2001 | CN1280150A Contineous preparing method for quinacridineone |
| 01/11/2001 | DE19931322A1 Verfahren zur Herstellung hochkonzentrierter Pigmentpreßkuchen Process for the preparation of highly concentrated pigment press |
| 01/10/2001 | EP1067156A1 Process for the preparation of high concentrated pigment presscakes |
| 11/28/2000 | US6152968 Water-soluble Quinacridones |
| 10/25/2000 | EP1046681A2 Hybrid pigments |
| 10/19/2000 | WO2000061689A1 Pigment compositions and process of shading |
| 10/03/2000 | US6127549 Fluorescent indigo pigments |
| 09/28/2000 | WO2000056819A1 Crimson-colored pigment composition and the utilization thereof |
| 09/28/2000 | CA2362088A1 Crimson-colored pigment composition and the utilization thereof |
| 09/20/2000 | CN1266852A Process for aqueous preparation of small size linear quinacridone |
| 09/06/2000 | CN1265404A Pigment particle growth and/or crystalline phase adjusting agent |
| 08/30/2000 | EP1031615A2 Aqueous process for the preparation of linear quinacridones having a reduced particle size |
| 08/26/2000 | CA2299494A1 Aqueous process for the preparation of linear quinacridones having a reduced particle size |
| 08/09/2000 | EP1026207A2 Pigment particle growth and/or crystal phase directors |
| 08/02/2000 | CA2297506A1 Pigment particle growth and/or crystal phase directors |
| 07/20/2000 | DE19901060A1 Chinacridon-Mischkristallpigmente der gamma-Phase Quinacridone mixed-crystal pigments of the gamma phase |
| 07/19/2000 | EP1020497A2 Mixed crystals of quinacridone pigments in the gamma phase |
| 07/18/2000 | US6090196 Liquid phase oxidation of 6,13-dihydroquinacridone with m-nitrobenzene sulfonic acid salt in presence of a base and quinacridone monosulfonic acid grain growth inhibitor |
| 06/27/2000 | US6080858 Reacting amine compounds with fluorine-substituted triazine or pyrimidine groups to make dyes having fluorine-substituted triazine or pyrimidine group as fiber-reactive component; presence of phase transfer catalyst improves purity, yield |
| 06/07/2000 | CN1255516A Application of quinacridineone mixed crystal pigment in color mixing agent and ink |
| 06/02/2000 | WO2000031040A1 Process for preparing bis n-substituted perylenetetra carboximides via bis (hydroxymethyl) perylenetetra carboximide |
| 05/31/2000 | EP1004941A1 Use of mixed crystals of pigments on the basis of quinacridones in electrophotographic toners or developers, powder lacquers and ink-jet-inks |
| 05/31/2000 | DE19854571A1 Verwendung von Mischkristallpigmenten der Chinacridonreihe in elektrophotographischen Tonern und Entwicklern, Pulverlacken und Ink-Jet-Tinten Use of mixed-crystal pigments of the quinacridone series in electrophotographic toners and developers, powder coatings and inkjet inks |
| 05/30/2000 | US6068695 Process for the continuous preparation of quinacridones |
| 05/23/2000 | US6066203 For waterborne coating systems |
| 05/16/2000 | US6063924 N-(alkenyl or alkynyl)oxycarbonyl substituted chromophore derivatives; soluble organic pigments |
| 02/29/2000 | US6031100 Microwave syntheses of quinacridones, 6,13-Dihydroquinacridones, and 6,13-quinacridonequinones |
| 02/16/2000 | CN1244553A Preparation technology of dihalo substituted quinacridone organic-pigment |
| 02/08/2000 | US6022970 Process for preparing 2-anilinoacridones |
| 01/13/2000 | DE19831097A1 Verfahren zur Herstellung von Chinacridonpigmenten A process for the preparation of quinacridone pigments |
| 01/12/2000 | EP0971001A1 Process for the manufacture of quinacridone pigments |
| 01/12/2000 | EP0970149A1 Water-soluble quinacridones |
| 01/11/2000 | US6013777 Process for the preparation of fluorescent pigments |
| 01/11/2000 | US6013776 Carbamate-containing soluble chromogens exhibiting solid state fluorescence in the uv range |
| 01/11/2000 | US6013127 Process for the preparation of quinacridone solid solutions |
| 01/05/2000 | EP0968250A1 Soluble chromophores having improved solubilising groups |
| 11/24/1999 | EP0959106A1 Heterocyclic-substituted quinacridone pigments |
| 11/23/1999 | US5989333 Red-violet pigment comprising beta-phase quinacridone and minor amount of substituted quinacridone crystallized by cyclizing corresponding dianilinoterephthalic acids, hydrolyzing the mixture under pressure, isolating pigment |
| 11/03/1999 | EP0953609A2 Pigment derivatives for waterborne coatings |
| 10/19/1999 | US5968252 Polycyclic compounds |
| 09/22/1999 | CN1229107A Preparation technology for quinacridone organic pigment |
| 09/18/1999 | CA2265316A1 Aqueous pigment and/or filler dispersions containing a special combination of dispersing agents |
| 05/20/1999 | DE19750701A1 Reaction of F-substituted triazine and pyrimidine compounds with amino compounds |
| 03/31/1999 | EP0905199A2 Microwave syntheses of quinacridones, 6, 13-dihydroquinacridones and 6, 13-quinacridonequinones |
| 03/23/1999 | US5886160 Thermal treatment |
| 03/10/1999 | CN1210123A Mixed crystal pigments of the quinacridone series |
| 02/23/1999 | US5874580 Fluorescent perylene pigments |
| 02/10/1999 | EP0896034A1 Mixed crystals of pigments on the basis of quinacridones |
| 02/10/1999 | CN1207402A Process for preparation of quinacridone solid solutions |
| 02/09/1999 | US5868828 Heterocyclic-substituted quinacridone pigments |
| 02/03/1999 | EP0894832A2 Process for the preparation of quinacridone solid solutions |
| 01/05/1999 | US5856488 Oxidizing a premilled 6,13-dihydroquinacridone |
| 12/09/1998 | CN1201055A Beta-quinacridone pigment |
| 12/08/1998 | US5847143 Process for preparing quinacridones |
| 11/24/1998 | US5840901 Oxidation process for preparing quinacridone pigments |
| 11/18/1998 | CN1199046A Process for preparing 2-anilinoacridones |
| 11/11/1998 | EP0877021A1 Process for preparing 2-anilinoacridones |
| 11/09/1998 | CA2237077A1 Process for preparing 2-anilinoacridones |
| 10/28/1998 | EP0874025A2 Beta quinacridone pigment |
| 10/27/1998 | US5827364 Pigment compositions |
| 10/21/1998 | EP0781310B1 Mono-n-alkyl-quinacridone pigments |
| 10/06/1998 | US5817817 From dialkyl 1,4-cyclohexanedione-2,5-dicarboxylate |
| 09/30/1998 | EP0867477A1 Polycyclic compounds |
| 09/24/1998 | DE19711443A1 Wasserlösliche Chinacridone Water-soluble Quinacridones |
| 09/22/1998 | US5811543 Fluorescent carbamate-modified phthalocyanine pigments |
| 09/09/1998 | EP0863186A1 Quinacridone pigment |
| 07/30/1998 | WO1998032802A1 Soluble chromophores having improved solubilising groups |
| 07/30/1998 | CA2275965A1 Soluble chromophores having improved solubilising groups |
| 07/28/1998 | US5785750 1,4-diketo-3,6-diarylpyrolo 3,4-c! pyrrole |
| 07/14/1998 | US5780627 Fluorescent dioxazine pigments |