| Patents for C09B 1 - Dyes with an anthracene nucleus not condensed with any other ring (1,801) |
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| 07/23/1991 | US5034547 Colorfastness |
| 07/16/1991 | US5032670 Amorphous or crystalline |
| 07/02/1991 | US5028709 Anthraquinone vat dyes |
| 06/25/1991 | US5026505 Pleochroic dyes with trans=4=substituted cyclohexyl groups; improved display contrast stability |
| 06/19/1991 | EP0432735A2 Liquid crystal coupled dichroic dyes |
| 06/12/1991 | EP0432095A1 Anthraquino vat dyestuffs, their preparation and their use |
| 05/29/1991 | DE4037569A1 Vattable 5,7-di:amino-1,2,4-triazolo-(4,3-a)-(1,3,5)-triazine(s) - useful as dyes for cellulosic textiles or as pigments for polymers, lacquers etc. |
| 05/21/1991 | US5017713 Process for preparing substituted aminoanthraquinones |
| 05/07/1991 | US5013712 Magenta dye-donor element used in thermal transfer and thermal transfer sheet using it |
| 05/02/1991 | WO1991005824A1 Anti-cancer compounds |
| 04/17/1991 | EP0423068A1 New anthraquinone compounds |
| 04/09/1991 | US5006276 Dichroic dyes combination; stability at low temperature; light resistance |
| 03/26/1991 | US5002925 Isopropyl 1-amino-4-m-toluidinoanthraquinone-2-carboxylate, cyan composition for sublimation transfer record and cyan composition for color toner containing it |
| 03/13/1991 | EP0417017A1 Copolymerized anthraquinone-polyester colour concentrates |
| 03/13/1991 | CN1011975B Process for preparation of 1-aminoanthraquinones |
| 03/12/1991 | US4999418 Polyesters colored with the residue of heat stable anthraquinone compounds |
| 03/06/1991 | EP0415859A1 Polyesters colored with the residue of heat stable anthraquinone compounds |
| 03/05/1991 | US4997960 Chlorination in sulfuric acid or oleum |
| 03/05/1991 | US4997897 Unsaturated esters or amides of aminoanthraquinone dyes |
| 03/01/1991 | WO1991003509A1 Polyesters colored with the residue of heat stable anthraquinone compounds |
| 03/01/1991 | WO1991003508A1 Copolymerized anthraquinone-polyester color concentrates |
| 01/29/1991 | US4988664 Thermal transfer imaging using alkylcarbonylamino-anthraquinone dyes |
| 01/23/1991 | EP0409638A1 Anthraquinone dyes having alkylsulfonylamino substituents |
| 01/23/1991 | EP0409637A1 Thermal transfer imaging using sulfonylamino-anthraquinone dyes |
| 01/23/1991 | EP0409636A1 Thermal transfer imaging using alkylcarbonylamino-anthraquinone dyes |
| 01/22/1991 | US4986852 Pigments and use thereof |
| 01/21/1991 | CA2019599A1 Thermal transfer imaging using sulfonylamino-anthraquinone dyes |
| 01/21/1991 | CA2019545A1 Anthraquinone dyes having alkylsulfonylamino substituents |
| 01/21/1991 | CA2019544A1 Thermal transfer imaging using alkylcarbonylamino-anthraquinone dyes |
| 01/15/1991 | US4985171 Anthraquinone type compound and liquid crystal composition containing such compound |
| 01/10/1991 | WO1991000317A1 Method of preparing anthraquinone dyes |
| 12/11/1990 | US4977134 Lightfastness, heat fastness |
| 12/04/1990 | CA1277132C Chemiluminescent composition |
| 11/13/1990 | US4969954 Isolation as sulfate, hydrolysis |
| 11/07/1990 | EP0396376A1 Polymerizable dye |
| 11/06/1990 | CA1276016C Anthraquinone compounds and polarizing film containing the same |
| 10/23/1990 | US4964876 Polyesters |
| 09/18/1990 | US4957904 Synthetic blood, surface tension reduction |
| 09/04/1990 | US4954410 Color toner composition |
| 08/16/1990 | EP0382053A2 Process for the preparation of anthraquinone derivatives |
| 07/18/1990 | EP0378510A2 Disperse dyes |
| 07/10/1990 | US4940692 Transfer of dyes |
| 07/04/1990 | EP0375990A2 Process for the preparation of 1-amino-2-bromo-4-hydroxy-anthraquinone |
| 06/27/1990 | EP0374838A2 Electrophotographic elements containing certain anthraquinone derivatives as electron-transport agents |
| 06/12/1990 | US4933104 Anthraquinone derivative as a dichroic dye for a liquid-crystal material, liquid-crystal material and an electrooptical device |
| 06/06/1990 | EP0371782A2 Anthraquinone compound, polymerizable dyestuff monomer derived therefrom and resin and color toner composition |
| 05/29/1990 | CA2004011A1 Anthraquinone compound, polymerizable dyestuff monomer derived therefrom and resin, and color toner composition |
| 05/16/1990 | EP0368750A2 Process for preparing substituted aminoanthraquinones |
| 05/08/1990 | US4924015 Preparing metallic coatings and images |
| 05/01/1990 | US4921959 Anthraquinone compounds and polarizing film containing the same |
| 04/25/1990 | EP0365392A1 Magenta dye-donor element used in thermal transfer and thermal transfer sheet using it |
| 04/10/1990 | US4916244 Preparation of 1-amino-4-hydroxy-2-(6'-hydroxyhexoxy)-anthraquinone |
| 04/04/1990 | EP0361253A2 Process for the preparation of 1-amino-2-chloro-4-hydroxy-anthraquinone |
| 04/03/1990 | US4913996 Electrophotographic elements containing certain anthraquinone derivatives as electron-transport agents |
| 02/27/1990 | US4904066 Electro-optical devices using liquid crystal polymers |
| 02/20/1990 | US4902787 Method for producing lightfast disperse dyestuffs containing a build-in photostabilizer [molecule] compound |
| 01/03/1990 | EP0348519A1 Liquid crystal composition and display element using same |
| 12/27/1989 | EP0348024A2 Process for preparing polyurethane resins colored with Anthraquinone colorants and products produced thereby |
| 11/29/1989 | EP0344106A2 Disperse blue dyes and mixtures of disperse blue dyes |
| 11/28/1989 | US4883611 Dichroic coloring agents for liquid crystal displays |
| 11/15/1989 | EP0341842A2 Isopropyl 1-amino-4-m-toluidinoanthraquinone-2-carboxylate, and cyan compositions for sublimation transfer record and color toner containing it |
| 11/02/1989 | WO1989010384A1 Lightfast disperse dyestuffs |
| 10/18/1989 | EP0337200A2 Process for transferring dyes |
| 10/03/1989 | US4871481 Cyanation and desulfonation of 1,4-diaminoanthraquinone-2-sulfonic acid in water and organic liquid mixture |
| 09/05/1989 | US4863634 Anthraquinone dyestuffs |
| 08/30/1989 | EP0330487A2 Color toner composition |
| 08/17/1989 | DE3902687A1 Boron complexes |
| 08/17/1989 | DE3902686A1 Boron complexes |
| 08/09/1989 | EP0326866A2 Process for the preparation of aryl amine of the anthraquinone series |
| 07/25/1989 | US4851528 Anthraquinone derivatives |
| 07/25/1989 | US4851157 Process for the preparation of vat dyes from brominated dibenzanthrone and 1-aminoanthraquinone |
| 07/18/1989 | US4849533 Mono-or diglycidyl anthraquinones, redox catalysts for metal electrodeposition |
| 07/12/1989 | EP0323744A2 Transfer sheet ink and method for sublimation thermal-transfer printing |
| 07/11/1989 | US4846846 Process for preparing polyurethane resins colored with anthraquinone colorants and products produced thereby |
| 07/05/1989 | EP0323184A1 Halogenated anthraquinones useful as near infrared absorbing optical filters, and method of making them |
| 07/04/1989 | US4845220 Red, orange or purple shades on cotton |
| 06/28/1989 | EP0321919A2 Pigments and their use |
| 06/20/1989 | US4841057 Polarizing films; high dichroism, performance |
| 06/20/1989 | US4840749 Oxidation of 1-nitronaphthalene, diels-alder reaction with 1,3-butadiene, reduction |
| 06/20/1989 | US4840640 Polarizing film: polymer film base containing substituted anthraquinone dichroic dye |
| 06/15/1989 | WO1989005338A1 Liquid crystal composition and display element using same |
| 03/22/1989 | EP0307866A2 Dichroic coloring agents for liquid crystal displays |
| 03/14/1989 | US4812141 Polyalkylene oxide substituted chromophore |
| 02/15/1989 | EP0303185A2 Process for the preparation of 1-amino-4-hydroxy-2-(6'hydroxyhexoxy)-anthraquinone |
| 02/14/1989 | US4804767 Reacting anthraquinone compound with haloformate in inert solvent and heterocyclic base |
| 01/25/1989 | EP0300770A2 Polarizing film containing an anthraquinonic colorant |
| 01/04/1989 | EP0298034A2 Substituted anthraquinones and their use in epoxy resins |
| 12/07/1988 | EP0293712A2 Process for the preparation of 4,4'-diamino-1,1'-dianthraquinonyl pigments |
| 11/15/1988 | US4785096 Process for the preparation of 1,4-diamino-2,3-dicyanoanthraquinones |
| 11/15/1988 | US4784806 Method for producing anthraquinone compounds |
| 11/01/1988 | US4782092 5,8-dichloro-4-hydroxy-1-[(aminoalkyl) amino]-9,10-anthracenediones, pharmaceutical compositions and use |
| 11/01/1988 | US4781724 Process for the simultaneous dyeing and permanent shaping of hair |
| 09/27/1988 | US4773914 Anthraquinone, monoazo and disazo dyes, ozone fastness |
| 09/13/1988 | US4770818 Process for the preparation of 1-aminoanthraquinones |
| 09/13/1988 | CA1241954A1 Photographic products and processes |
| 08/30/1988 | US4767573 Process for the preparation of a mixture of 1-amino-2-chloro-4-hydroxyanthraquinone and 1-amino-2-bromo-4-hydroxyanthraquinone |
| 08/16/1988 | US4764474 Method for detecting a tagging compound |
| 07/27/1988 | EP0275519A2 Process for the preparation of 1,4-diamino-dicyanoanthraquinone |
| 07/20/1988 | EP0275077A1 Anthraquinone compounds and polarizing film containing the same |
| 07/13/1988 | EP0274458A1 Anthraquinone vat dyestuffs, their preparation and their use |