Class 552/234 - Sulfur bonded directly at alpha position (i.e., 1-, 4-, 5- or 8-position)

Subclass of Class 552 - Organic compounds -- part of the class 532-570 series
Definition: Compounds wherein an alpha position (i.e., 1-, 4-, 5-, or
No. of patents: 38
Last issue date: 04/22/2008

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Number	Title	Issue Date
7361209	Apparatus and process for preparing sorbents for mercury control at the point of use A system for treating a contaminated gas stream is provided that includes a comminution device 204 operable to effect size reduction of a plurality of sorbent particles and form a plurality of comminuted particles, a plurality of nozzles 224 distribute...	04/22/2008
7351451	Anthraquinone compound, liquid crystal composition, cell and display device employing the same A liquid crystal composition comprising at least one liquid crystal compound and at least one anthraquinone compound represented by formula (1) below: Formula (1) (wherein R2 to R8 each independently represents a hydrogen or substituent; Het is...	04/01/2008
7160335	Anthraquinone dyes The present invention relates to a compound of formula I wherein R1 and R3 are each independently of the other —NHR5, NHSO2R5, —NHCOR5, —OR	01/09/2007
7141685	Thermally stable, anthraquinone colorants containing copolymerizable vinyl groups Disclosed are thermally-stable, anthraquinone colorant compounds (dyes) which contain one or more vinyl groups which render the compounds copolymerizable with reactive vinyl monomers to produce colored, polymeric compositions such as acrylate and methacrylate polyme...	11/28/2006
6870062	Thermally stable, anthraquinone colorants containing copolymerizable vinyl groups Disclosed are thermally-stable, anthraquinone colorant compounds (dyes) which contain one or more vinyl groups which render the compounds copolymerizable with reactive vinyl monomers to produce colored, polymeric compositions such as acrylate and methacrylate polyme...	03/22/2005
6727372	Colorant compounds containing copolymerizable vinyl groups Disclosed are novel colorant compounds which contain one or more ethylenically-unsaturated (vinyl), photopolymerizable radicals which may be copolymewrized (or cured) with ethylenically-unsaturated monomers to produce colored compositions such as colored acrylic coa...	04/27/2004
6620858	Colorants containing copolymerizable vinyl groups and sulfonamide linkages Disclosed are thermally-stable, colored, photopolymerizable compounds containing a vinyl group which are capable of being copolymerized with reactive vinyl monomers to produce colored compositions such as polyacrylates, polymethacrylates, polystyrene, etc...	09/16/2003
6033742	Liquid crystal display device A liquid crystal display device comprises, a pair of substrates having an electrode on a surface thereof, and a liquid crystal layer containing a liquid crystal and a dichroic dye, wherein the dichroic dye is an anthraquinone dye exhibiting 0.08 or less o...	03/07/2000
5679808	Tertiary non-linear optical material The present invention discloses a tertiary non-linear optical material comprising a quinone derivative expressed by any one of the general formulas: ##STR1## wherein R1, R2, R3, R4, R5 and R...	10/21/1997
5581000	Sulfonic acid-substituted anthrahydroquinone alkylammonium salts Hydrogen peroxide is produced by oxidizing alkylammonium salts of sulfonic acid-substituted anthrahydroquinones. As said salts are highly soluble in protic polar solvents such as water and lower aliphatic alcohols, the concentration of hydrogen peroxide i...	12/03/1996
5493036	Fibre-reactive anthraquinone dyes, their preparation and the use thereof The invention relates to fibre-reactive anthraquinone dyes of formula ##STR1## wherein R1, R2, B, U, R and n are as defined in claim 1. The anthraquinone dyes of formula (1) are suitable for dyeing or printing hydroxyl group con...	02/20/1996
5480873	Pharmaceutical compounds Pharmaceutical compounds of the formula ##STR1## in which R1 and R2 are each hydrogen, hydroxyl, halo, C1-4 alkyl, C1-4 alkoxy, acyloxy, --O-glucoside, optionally substituted phenyl or optionally substitute...	01/02/1996
5412123	Anthraquinone and anthracene derivatives as inhibitors of the cell-adhesion molecules of the immune system Derivatives of anthraquinone and anthracene are synthesized and formulated into pharmaceutical formulations. When the formulations are administered the derivatives act as ligands binding to an interrupting the biological chain of events associated with se...	05/02/1995
5030387	Organic conductive complex An organic conductive complex comprising an electron donor and an electron acceptor, the electron donor being an anthraquinone derivative represented by formula (1): ##STR1## wherein X1, X2, X3 and X4, whi...	07/09/1991
4985171	Anthraquinone type compound and liquid crystal composition containing such compound An anthraquinone type compound which is represented by the following general formula (I) and which exhibits yellow to orange-colored hue; and a composition for liquid crystal display element obtained by dissolving the compound into liquid crystal: ##...	01/15/1991
4942251	Process for producing ଱-anthraquinonesulfonic acids and recovering the catalyst used therein The present invention concern a process for producing ଱-anthraquinonesulfonic acids in the presence of a metal catalyst in oleum and recovering the metal catalyst which is solubilized in the resulting sulfonation mixture. A porous carrier is introdu...	07/17/1990
4921959	Anthraquinone compounds and polarizing film containing the same An anthraquinone compound represented by formula: ##STR1## wherein R and X are as defined in the specification, and a polarizing film containing the same. The anthraquinone compound exhibits satisfactory compatibility with organic polymers and high d...	05/01/1990
4711743	Process for producing anthraquinone-1-sulphonic acid by sulphonation with palladium catalyst A process for the production of anthraquinone-1-sulphonic acid by sulphonating anthraquinone with a sulphonating agent in the presence of palladium catalyst in a solvent, is characterized in that before sulphonation, the palladium is mixed with nitric aci...	12/08/1987
4596666	Aryl-mercapto anthraquinone dyestuffs, their preparation and use and dichroic material containing aryl-mercapto anthraquinone dyestuffs Anthraquinone dyestuffs of the formula ##STR1## in which R1 represents alkyl, aralkyl, --CO--X-alkyl, --CO-- X-aralkyl, --CO--X-aryl, --O-alkyl, --O-aralkyl, --O-- aryl, --CN, --NO2, --CF3, halogen or a heterocyclic r...	06/24/1986
4506957	Liquid crystal materials containing pleochroic anthraquinone dyes A material suitable for a guest-host liquid crystal device comprises a solution of a liquid crystal material and a pleochroic dye characterized in that the dye comprises at least one anthraquinone compound free from water-solubilizing and ionic substituen...	03/26/1985
4464282	Organic materials A material suitable for a guest-host liquid crystal device comprises a solution of a liquid crystal material and a pleochroic dye wherein the pleochroic dye comprises at least one anthraquinone compound free from water solubilizing and ionic substituents ...	08/07/1984
4461911	Process for the preparation of S-arylthioglycolic acids Process for the preparation of S-arylthioglycolic acids of the formula ##STR1## in which A designates a benzene ring, which can be substituted by 1, 2, 3, 4 or 5 substituents from the series halogen, nitro, hydroxyl, mercapto, trifluoromethyl, alkyl,...	07/24/1984
4455253	Pleochroic anthraquinone dyes An anthraquinone dye free from water-solubilizing and ionic substituents of the general formula: ##STR1## wherein Q is NH2, OH, alkyl, aryl, NO2 or halo; n is 0 to 4; each X independently is H, --SR, --NZ1 Z2 or...	06/19/1984
4446047	Pleochroic anthraquinone dyes An anthraquinone dye from water-solubilizing and ionic substituents of the general formula: ##STR1## wherein Q is NH2, OH, alkyl, aryl, NO2 or halo; n is 0 to 4; each X independently is H, --SR, --NZ1 Z2 or Q; e...	05/01/1984
4405211	Liquid crystal compositions with pleochroic anthraquinone dyes A material suitable for a guest-host liquid crystal device comprises a solution of a liquid crystal material and a pleochroic dye wherein the pleochroic dye comprises at least one compound having a formula: ##STR1## wherein: R represents a group sele...	09/20/1983
4391489	Liquid crystal materials containing pleochroic anthraquinone dyes A material suitable for a guest-host liquid crystal device comprises a solution of a liquid crystal material and a pleochroic dye wherein the pleochroic dye comprises at least one compound having a formula: ##STR1## wherein one of X and Y is OH and t...	07/05/1983
4385044	Treatment of contaminated Stretford solution A side-stream portion of a Stretford Process solution is taken from the main-stream in order to reduce the amount of deleterious side-products in the solution and the ADA values and vanadium values are salvaged from the side-stream by taking up the ADA va...	05/24/1983
4342700	Oxidation-reduction reagents for a wet desulfurization process and a process for preparing same An oxidation-reducing reagent for a wet desulfurization process, which comprises (a) one or more compounds selected from the group consisting of salts of substituted anthraquinonesulfonic acids of the general formulas: ##STR1## wherein M stands for a...	08/03/1982
4276187	Oxidation-reduction reagents for a wet desulfurization process and a process for preparing same An oxidation-reducing reagent for a wet desulfurization process, which comprises (a) one or more compounds selected from the group consisting of salts of substituted anthraquinonesulfonic acids of the general formulas: ##STR1## wherein M stands for a...	06/30/1981
4226783	଱-Chlorination process A process for ଱-chlorination of side chains of electronegatively substituted aromatic compounds with dichlorine monoxide....	10/07/1980
4176113	Process for dyeing polyesters in the melt Use of anthraquinone derivatives of the formula ##STR1## wherein X is --NH-- or --S--, one Y is --NHCOR, R being an alkyl, aryl or heterocyclic residue, the other Y are hydrogen, Z is halogen, and n is 0, 1, 2 or 3, whereby Z may be 1 to 3 halogen bo...	11/27/1979
4128396	Process for the improvement of dyeing properties of pigments of the anilino and arylmercapto anthraquinone series Process for the improvement of dyeing properties of pigments of the anilino and arylmercapto anthraquinone series for bulk dyeing linear polyesters by halogenation of unhalogenated or lower halogenated compounds of the formula ##STR1## WHEREIN A...	12/05/1978
4124606	Sulfonation of anthraquinone in sulfur dioxide solvent Sulfonation of anthraquinone by a sulfur trioxide component including SO3 or oleum in a liquid sulfur dioxide solvent. When a mercury catalyst is used to give alpha anthraquinone sulfonate products, most of the mercury is left in the reactor or...	11/07/1978
4021455	Process for the manufacture of anthraquinonesulphonic acid Process for the manufacture of practically mercury-free anthraquinonesulphonic acids, characterized in that anthraquinone is sulphonated with sulphuric acid containing SO3 in the presence of catalysts containing mercury, at elevated temperature...	05/03/1977
4013687	Anthraquinone dispersing agents Dyestuffs of the formulae and wherein D is the radical of an anthraquinone dyestuff which is attached to Z through a carbon atom of an aromatic ring present in D; Z is a divalent bridging group; n is a positive integer having a value of 1 to 4; X is a div...	03/22/1977
4012454	Iodination process A decarboxylation process for substituting iodine atoms for silver carboxylate radicals which comprises reacting the silver salts of carboxylic acids with iodine under decarboxylation conditions....	03/15/1977
4003923	Preparation of quinones Quinones are prepared by the catalytic oxidation of aromatic compounds selected from the group consisting of acenaphthene, fused ring structures having 3 to 5 six-membered rings and sulfonic acid derivatives thereof in the liquid phase in carboxylic acid ...	01/18/1977
3975410	Process for the manufacture of halogen-containing anthraquinoidal compounds, their use and new halogen-containing anthraquinoidal compounds Process for the manufacture of halogen-containing anthraquinoidal compounds being useful for bulk dyeing high molecular organic compounds and having the formula ##SPC1## Wherein A is an anthraquinoidal radical being free from nitro groups, X is --NH-...	08/17/1976

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Class 552/234 - Sulfur bonded directly at alpha position (i.e., 1-, 4-, 5- or 8-position)