| Patents for C09B 3 - Dyes with anthracene nucleus condensed with one or more carbocyclic rings (461) |
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| 11/28/2000 | US6153764 Imidation of a perylene tetracarboxylic derivative pigment precursor by cyclization reaction with ammonia or an amine in solution of reaction mixture containing a second cyclic imide derivative which is non-pigmentary |
| 11/07/2000 | US6143905 1,7-diaroxy- or 1,7-arylthio-substituted perylene-3,4,9,10-tetracarboxylic acids, their dianhydrides and diimides |
| 11/07/2000 | US6143068 Process for the preparation of highly chromatic perylene pigments |
| 11/02/2000 | WO2000064986A1 Novel carbopyronine fluorescence dyes |
| 11/02/2000 | DE19919119A1 Neue Carbopyronin-Fluoreszenz-Farbstoffe New carbopyronine fluorescent dyes |
| 08/17/2000 | DE19905652A1 Colorant for natural or synthetic fibers, especially human hair, contains 4-sulfo- and/or 4-amino-1,2-naphthoquinone compound(s) and nitrobenzene, malonodinitrile and/or diaminomaledinitrile compound(s) |
| 08/02/2000 | CN1261611A Method for preparing deep colour perylene dye |
| 08/02/2000 | CN1261610A Method for preparing deep colour perylene dye |
| 07/19/2000 | EP1020496A1 Process for the preparation of highly chromatic perylene pigments |
| 07/19/2000 | EP1019388A1 Preparation of perylene-3,4-dicarboxylic anhydrides |
| 07/04/2000 | US6084132 Vat dye formed by reductive alkylation of a pyranthrenedione or a dibenzopyrenedione derivative; detection of pipeline leakage/interface or of crude oil in depleted oil wells |
| 06/21/2000 | EP1010731A2 Process for the preparation of highly chromatic perylene pigments |
| 05/09/2000 | US6060601 Fluorescent dyes in highly sensitive detection methods, reagents for the qualitative, semiquantitative and quantitative detection |
| 04/27/2000 | WO2000003034A3 Novel polycyclic aromatic fluorogenic substrates for hydrolases |
| 04/11/2000 | US6049428 Coating a substrate with a solution of an organic dye occurring in the lyotropic liquid-crystal state in a solvent while simultaneously orienting the dye and removing the solvent |
| 03/21/2000 | US6039769 Process for the preparation of highly chromatic perylene pigments |
| 02/17/2000 | DE19836714A1 Verfahren zur Herstellung von N,N'-Dimethyl-perylen-3,4,9,10- tetracarbonsäurediimid in transparenter Pigmentform A process for the preparation of N, N'-dimethyl-3,4,9,10-perylene-tetracarboxylic diimide in the form of transparent pigment |
| 02/16/2000 | EP0979846A1 Method for the production of N,N'-dialkyl perylene-3,4,9,10-tetracarboxylic acid diimides in a transparent pigment form |
| 02/02/2000 | CN1243511A Preparation of -3,4-dicarboxylic anhydrides |
| 01/20/2000 | WO2000003034A2 Novel polycyclic aromatic fluorogenic substrates for hydrolases |
| 01/20/2000 | CA2335564A1 Novel polycyclic aromatic fluorogenic substrates for hydrolases |
| 01/19/2000 | EP0792257A4 Dichroic light polarizers |
| 01/18/2000 | US6015458 Process for the preparation of highly chromatic perylene pigments |
| 12/22/1999 | EP0965629A1 Compound for organic electroluminescence device and organic electroluminescence device |
| 11/09/1999 | US5981773 Reacting a corresponding perylene-3,4:9,10-tetracarboxylic dianhydride with a sterically hindered amine, as a base, at an elevated temperature |
| 08/25/1999 | EP0937724A1 Perylene compounds and their use as pigment dispersants |
| 02/24/1999 | CN1209131A 1,7-diaroxy-or 1,7-diarylthio-substituted perylene-3,4,9,10-tetracarboxylic acid and their dianhydrides and diimides |
| 02/17/1999 | EP0896964A2 Perylenehydrazideimides as carbonyl derivatizing agents |
| 01/20/1999 | EP0765154B1 Direct-acting hair colouring agent |
| 10/28/1998 | EP0873342A1 1,7-diaroxy- or 1,7-diarylthio-substituted perylene-3,4,9,10-tetracarboxylic acids and their dianhydrides and diimides |
| 09/23/1998 | EP0866367A2 Radiation sensitive composition |
| 09/02/1998 | EP0861878A1 Unsymmetrical perylene dimers |
| 07/23/1998 | WO1998031678A1 Preparation of perylene-3,4-dicarboxylic anhydrides |
| 07/16/1998 | DE19700990A1 Die ausbalancierte Decarboxylierung von aromatischen Polycarbonsäuren - eine einstufige Synthese von Perylen-3,4-dicarbonsäureanhydrid The balanced decarboxylation of aromatic polycarboxylic acids, - a one-step synthesis of perylene-3,4-dicarboxylic anhydride |
| 05/26/1998 | US5756744 Unsymmetrical perylene dimers |
| 01/20/1998 | US5710197 Methyl methacrylate polymer and fluorescent perylene or coumarin pigments |
| 11/12/1997 | EP0806198A2 Dyeing composition |
| 11/04/1997 | US5683842 Charge generators for images |
| 09/03/1997 | EP0792257A1 Dichroic light polarizers |
| 06/26/1997 | WO1997022607A1 1,7-diaroxy- or 1,7-diarylthio-substituted perylene-3,4,9,10-tetracarboxylic acids and their dianhydrides and diimides |
| 06/19/1997 | DE19547209A1 1,7-Diaroxy-oder -arylthiosubstituierte Perylen-3,4,9,10-tetracarbonsäuren, deren Dianhydride und Diimide 1,7-Diaroxy or -arylthiosubstituierte perylene-3,4,9,10-tetracarboxylic acids, their dianhydrides and diimides |
| 04/02/1997 | EP0765154A1 Direct-acting hair colouring agent |
| 03/25/1997 | US5614015 Wet milling in water |
| 10/22/1996 | CA1338668C Pigments and use thereof |
| 09/26/1996 | DE19510668A1 Di:bromo-anthra-quinone pigment prepn. by environmentally friendly method |
| 09/10/1996 | US5554774 Vat dyes |
| 06/11/1996 | US5525743 Preparation of anthraquinone imide compounds |
| 05/30/1996 | WO1996016015A1 Dichroic light polarizers |
| 04/24/1996 | EP0426717B1 Optical memory |
| 04/09/1996 | US5505743 Halogenation of dibenzanthrone with bromine in presence of chlorosulfonic acid and catalyst; condensation with 1-aminoanthraquinone |
| 03/21/1996 | DE4433041A1 Di:bromo-anthra-quinone pigment prepn. by environmentally friendly method |
| 03/20/1996 | EP0702060A2 Process for the preparation of 4,10-dibromoanthantrone pigment |
| 01/24/1996 | CN1115259A Method for harmless treatment of Cr liquor and Cr slag by using silicate material |
| 01/17/1996 | EP0692517A1 Crosslinked polymer particules containing fluorescent dyes |
| 01/15/1996 | CA2153864A1 Crosslinked polymer particles containing a fluorescent dye |
| 01/10/1996 | EP0691390A2 Aqueous dispersions with fluorescent material |
| 12/21/1995 | WO1995034273A1 Direct-acting hair colouring agent |
| 11/28/1995 | US5470502 Lightfast |
| 11/15/1995 | CN1111663A The preparation of chlorinated violanthrones or isoviolanthrones |
| 08/17/1995 | DE19503845A1 Prepn. of chlorinated (iso)violanthrone(s) useful as vat dyes |
| 07/11/1995 | CA1336306C Hydrolyzable fluorescent substrates and analytical determinations using same |
| 04/27/1995 | DE4436386A1 Vat dyes |
| 04/26/1995 | EP0649833A1 Process for the preparation of anthraquinonamine compounds |
| 04/18/1995 | US5407885 Photochromic naphthacenequinones, process for their preparation and the use thereof |
| 03/29/1995 | EP0644869A1 Ion pairs of hypericin compounds having antiviral activity |
| 02/21/1995 | US5391749 Photoinitiators or photosensitizers |
| 01/05/1995 | WO1995000109A1 Use of n-allylamino aromatics in oxidative dyes |
| 10/11/1994 | US5354869 3,6-bis-(2'-methoxyphenyl)-2,5-dihydro-2,5-dimethyl-pyrrolo-(3,4-c)-pyrrole-1,4-dione compound |
| 08/02/1994 | US5334734 Comprising pyranthrone, anthraquinone and violanthrone or isoviolanthrone radicals |
| 08/02/1994 | US5334727 Pigment system additives to improve rheology, transparency, |
| 06/16/1994 | DE4241868A1 Vat dye mixt. for dyeing cotton grey or black - contg. bis-anthraquinonyl:amino-poly:cyclic cpd., and C.I. Vat Black 25, Blue 20 and Green 3 |
| 04/19/1994 | US5304244 Lightfast colors for polymers |
| 01/25/1994 | US5281729 Filtering composition of benzanthrone and water in filter press, mixing filter cake until pumpable paste forms, transporting paste to vessel containing benzanthrone and water, heating to dewater, condensing vapor, flaking solid |
| 12/01/1993 | CN1022928C Technological process and device for transforming imflammable pollutants or wastes into clean energy sources and useful products |
| 08/19/1993 | WO1993015607A1 Ion pairs of hypericin compounds having antiviral activity |
| 08/19/1993 | CA2130090A1 Ion pairs of hypericin compounds having antiviral activity |
| 06/17/1993 | DE4241875A1 Conditioning of 4,4'-di:amino-1,1'-di:anthraquinonyl pigments - by heating in aq. suspension in presence of alkali |
| 05/19/1993 | EP0542027A2 Vat dyes |
| 05/04/1993 | US5208354 Contrast agents, light absorbers or optical recording media |
| 03/02/1993 | US5190839 Titanyl phthalocyanine, quinone pigment, disazo pigment |
| 02/24/1993 | EP0528241A2 Continuous process for environment-friendly drying and purification of benzanthrone |
| 06/10/1992 | EP0489689A1 Photochromic naphthacenequinones, process for their production and their use |
| 06/06/1992 | CA2056854A1 Photochromic naphthacenequinones, their preparation and the use thereof |
| 05/13/1992 | EP0485337A1 Pyrazole-containing pigment derivatives |
| 05/12/1992 | US5112977 Photoinitiators, metallization of polymeric surfaces |
| 05/05/1992 | US5110931 Imidation of anhydride, heat treatment of aqueous suspension of crude pigment |
| 04/16/1992 | DE4031973A1 Dyeing of polyester fibres - using 2-alkanoyl-naphthacene-6,11-quinone derivs. |
| 04/16/1992 | DE4031972A1 Dyeing of polyester fibres - using 1,2,3,4-tetra:hydro-naphthacene-6,11-quinone derivs. |
| 04/16/1992 | DE4031966A1 Dyeing of polyester fibres - using 1-alkoxycarbonyl-naphthacene-6,11-quinone derivs. |
| 04/16/1992 | DE4031965A1 Dyeing of polyester fibres - using 1,2,3,4-tetra:hydro:naphthacene-6,11-quinone derivs. |
| 04/09/1992 | DE4133294A1 Printing plates for electrophotographic printing plates - have light sensitive layer contg. photoconducting 3,4,9,10-perylene:tetra:carboxyl:di:anhydride in particulate form |
| 12/11/1991 | CN1056856A Recovery and use method of pigment from wasted dyeing water |
| 12/10/1991 | US5071483 Process for the preparation of pigment preparations of the anthanthrone series |
| 11/06/1991 | EP0455103A2 Process for halogenation of polycyclic compounds |
| 08/22/1991 | DE4005056A1 New 1,7-diaza:perylene and its derivs. - prodn. from di:amino anthra-quinone in few stages and use e.g. as orange fluorescent marker |
| 07/30/1991 | US5035747 Mixed crystal pigments of the anthanthrone series, and preparation and use thereof |
| 07/02/1991 | US5028643 Tetrabenzodiazadiketoperylene pigment |
| 06/18/1991 | CA1284932C Biological and analytical uses of phenalenone and benzphenalenone compounds |
| 05/15/1991 | EP0426717A1 Optical memory. |
| 04/17/1991 | EP0422474A2 Fluorescent pigments |