| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 562045000 | Benzene ring bonded directly to the sulfonate sulfur (e.g., purification and neutralization of benzene sulfonic acids, etc.) | 33 |
| 20110213179 | METHOD OF EVALUATING EVENNESS OF SUPLATAST TOSILATE CRYSTAL, EVEN CRYSTAL, AND PROCESS FOR PRODUCING THE SAME - Provided are a method for evaluating evenness of suplatast tosilate crystals; stable suplatast tosilate crystals exhibiting evenness in optical purity; and a method for producing the suplatast tosilate crystals. | 09-01-2011 |
| 562046000 | Having -C(=X)-, wherein X is chalcogen, attached indirectly to the sulfonate group by nonionic bonding (e.g., aldehydes, etc.) | 5 |
| 20080293963 | PROCESS FOR PREPARATION ISOSULFAN BLUE - A process for the preparation of isosulfan blue (Active Pharmaceutical Ingredient) is provided. A process is also provided for preparation of the intermediate, 2-chlorobenzaldehyde-5-sulfonic acid, sodium salt of formula (2), used in the preparation thereof and a procedure for the isolation of benzaldehyde-2,5-disulfonic acid, di-sodium salt of the formula (3). Also provided is a process for the preparation of an isoleuco acid of formula (4), which upon mild oxidation gives rise to isosulfan blue of pharmaceutical grade which can be used for preparation of pharmaceutical formulations. The isolation and purification procedures provided in the process provide substantially pure isosulfan blue with HPLC purity 99.5% or greater. | 11-27-2008 |
| 20090156857 | DIAMINIUM BIS-3,5-DICARBOXYBENZENSULFONATE AND TRI-DIAMINIUM BIS-3,5-DICARBOXYBENZENSULFONATE AND METHODS FOR PRODUCING SAME - A composition of matter comprising a diamine salt and sulfoisophthalic acid in a ratio other than one salt to one acid and a process for producing a diamine salt of sulfoisophthalic acid comprising generating a sulfoisophthalic acid and charging the sulfoisophthalic acid with diamine. | 06-18-2009 |
| 20100041916 | PROCESS FOR PRODUCTION OF SULFONIC ACID ESTER - The present invention provides a method for producing a sulfonate ester efficiently and in high yield. | 02-18-2010 |
| 562047000 | Chalcogen or nitrogen bonded directly to the -C(=X)- group | 2 |
| 562052000 | Plural -C(=X)- groups attached indirectly to the sulfonate group by nonionic bonding | 2 |
| 562054000 | Plural -C(=X)- groups bonded directly to the same benzene ring | 2 |
| 20100298597 | PURIFICATION OF 5-SULFOISOPHTHALIC ACID BY THE USE OF AN ACETIC ACID WASH ON A CRUDE CAKE - A method for the purification of 5-sulfoisophthalic acid wherein via the application of an acetic acid wash while said crude cake of 5-sulfoisophthalic acid is filtered. | 11-25-2010 |
| 20120245378 | USE OF AN ACETIC ACID/WATER SOLVENT MIXTURE FOR THE PREPARATION OF LOW-SULFATE 5-SULFOISOPHTHALIC ACID, MONO-LITHIUM SALT FROM 5-ULFOISOPHTHALIC ACID - There is disclosed a process for making a mono-lithium salt of 5-sulfoisophthalic acid (LiSIPA) having less than 200 ppm sulfate. The process uses a reaction mixture of acetic acid, water, a lithium cation producing compound, and 5-sulfoisophthalic acid. The reaction mixture is heated to reflux, cooled, filtered and washed to obtain a high quality LiSIPA having less than 200 ppm sulfate. Also disclosed is a high quality mono-lithium salt of 5-sulfoisophthalic acid having less than 200 ppm sulfate. | 09-27-2012 |
| 562058000 | Nitrogen attached indirectly to the sulfonate group by nonionic bonding | 8 |
| 20100094044 | PROCESS FOR PREPARATION OF ISOSULFAN BLUE - A process for the preparation of isosulfan blue (Active Pharmaceutical Ingredient) is provided. A process is also provided for preparation of the intermediate, 2-chlorobenzaldehyde-5-sulfonic acid, sodium salt of formula (2), used in the preparation thereof and a procedure for the isolation of benzaldehyde-2,5-disulfonic acid, di-sodium salt of the formula (3). Also provided is a process for the preparation of an isoleuco acid of formula (4), which upon mild oxidation gives rise to isosulfan blue of pharmaceutical grade which can be used for preparation of pharmaceutical formulations. The isolation and purification procedures provided in the process provide substantially pure isosulfan blue with HPLC purity 99.5% or greater. | 04-15-2010 |
| 20130245315 | SULFONATION IN CONTINUOUS-FLOW MICROREACTORS - A continuous flow process for sulfonating 1,2.diaminobenzene comprises introducing a sulfonation mixture into a microreactor inlet of a continuous flow microreactor to produce a flow of the sulfonation mixture through the continuous flow microreactor. The sulfonation mixture comprises 1,2 aminobenzene dissolved in a molar excess of sulfuric acid. The continuous flow microreactor comprises one or more individual fluidic modules each having various features with respect to channel width and thermal management. The process further comprises maintaining a reaction temperature of from about 150.230 deg C. in at least a portion of the individual fluidic modules while the sulfonation mixture flows from the microreactor inlet to the microreactor outlet. Thereupon, the sulfonation mixture is received from the microreactor outlet. Finally, a sulfonated reaction product is precipitated out of the sulfonation mixture received from the microreactor outlet. The sulfonated reaction product is 3,4.diaminosulfonic acid, free of doubly sulfonated impurities. | 09-19-2013 |
| 562059000 | Plural benzene rings bonded directly to each other or to the same acyclic carbon | 3 |
| 20120078007 | PROCESS FOR PREPARATION OF ISOSULFAN BLUE - A process for the preparation of isosulfan blue (Active Pharmaceutical Ingredient) is provided. A process is also provided for preparation of the intermediate, 2-chlorobenzaldehyde-5-sulfonic acid, sodium salt of formula (2), used in the preparation thereof and a procedure for the isolation of benzaldehyde-2,5-disulfonic acid, di-sodium salt of the formula (3). Also provided is a process for the preparation of an isoleuco acid of formula (4), which upon mild oxidation gives rise to isosulfan blue of pharmaceutical grade which can be used for preparation of pharmaceutical formulations. The isolation and purification procedures provided in the process provide substantially pure isosulfan blue with HPLC purity 99.5% or greater. | 03-29-2012 |
| 20120289739 | Rinsable Dyes and Methods for their Preparation - Rinsable dyes with improved fugitivity are formulated by attaching dyestuff compounds with amine-capped sulfonic solubilizing groups to commercially available ethoxylated aniline, so that the surfactant effect of the ethoxylated aniline counteracts the substantivity of the dyestuff compound, while the neutralization of the sulfonic solubilizing groups reduces substantivity. | 11-15-2012 |
| 20130310600 | PROCESS FOR PREPARATION OF ISOSULFAN BLUE - A process for the preparation of isosulfan blue (Active Pharmaceutical Ingredient) is provided. A process is also provided for preparation of the intermediate, 2-chlorobenzaldehyde-5-sulfonic acid, sodium salt of formula (2), used in the preparation thereof and a procedure for the isolation of benzaldehyde-2,5-disulfonic acid, di-sodium salt of the formula (3). Also provided is a process for the preparation of an isoleuco acid of formula (4), which upon mild oxidation gives rise to isosulfan blue of pharmaceutical grade which can be used for preparation of pharmaceutical formulations. The isolation and purification procedures provided in the process provide substantially pure isosulfan blue with HPLC purity 99.5% or greater. | 11-21-2013 |
| 562060000 | Stilbene containing | 1 |
| 20120203031 | Sustainable chemical process for reduction of nitro compounds (R-NO2) or nitroso compounds (R-NO) containing sulphonic or carboxylic group into corresponding amino compounds (R-NH2) with inherent recycle of all acidic streams generated in synthesis - The process of the present invention creates a sustainable and closed water loop allowing inherent recycles of all liquid streams generated in the process. The liquid streams generated during the process of the invention are inherently recycled completely, making the process of the present invention a zero liquid discharge process which is environmentally friendly and sustainable. This invention further relates to a sustainable chemical process of reduction of R—NO | 08-09-2012 |
| 562068000 | Polycyclo ring system consisting of benzene rings bonded directly to the sulfonate group | 1 |
| 562070000 | Oxygen bonded directly to the polycyclo ring system (e.g., aminonaphthol sulfonic acid, etc.) | 1 |
| 562071000 | Additional sulfonate group bonded directly to the polycyclo ring system (e.g., H acid, etc.) | 1 |
| 20130178649 | SULFONIC ACID GROUP-CONTAINING DIAMINE COMPOUND AND METHOD FOR PRODUCING THE SAME - The present invention provides a novel sulfonic acid group-containing diamine compound represented by formula (1) below, and a method for producing the same. This compound has a fluorene skeleton with sulfonic acid groups or derivatives thereof. In this compound, a substituent having an amino group is bonded to each of carbon atoms at the 2-position and the 7-position in the skeleton, and no substituent is bonded to a carbon atom at the 9-position in the skeleton. A in formula (1) denotes an optionally-substituted divalent aliphatic group (having a carbon number of 10 or less) or an optionally-substituted divalent aromatic group (having the number of rings of 4 or less), for example. | 07-11-2013 |
| 562073000 | Nitro or halogen bonded directly to a benzene ring | 1 |
| 20090076300 | METHOD FOR IMMOBILIZING COMPOUND ONTO COLUMN CARRIER - It is intended to provide a method for immobilizing, onto a column carrier, a compound having a sulfo group or a compound to which a sulfo group can be added. The method comprises immobilizing the compound onto the column carrier using a linker comprising: a sulfo group-binding group capable of forming a bond with the sulfo group in the compound; and a carrier-binding group capable of forming a bond with a group present on the surface of the column carrier. | 03-19-2009 |
| 562074000 | Nonsulfonate chalcogen attached indirectly to the sulfonate group by nonionic bonding | 7 |
| 20120016156 | REACTION ACCELERATOR FOR SYNTHESIZING A CONDUCTIVE POLYMER, A CONDUCTIVE POLYMER, AND A SOLID ELECTROLYTIC CAPACITOR - There is provided a reaction accelerator for polymerizing a conductive polymer, comprising: a salt of an anion derived from a sulfonic acid having a skeleton of benzene or naphthalene having at least one OH group, and at least one divalent or more cation other than a transition metal cation. There is also provided a conductive polymer including the salt concerning the reaction accelerator. There is also provided a solid electrolyte capacitor including the conductive polymer as a solid electrolyte. The conductive polymer has a high electric conductivity and good heat-resistance. The solid electrolyte capacitor is reliable for an extended period of time. | 01-19-2012 |
| 562075000 | Two benzene rings bonded to the nonsulfonate chalcogen (e.g., phenoxyphenyl compounds, etc.) | 3 |
| 20110263893 | PRODUCTS, PROCESS FOR PRODUCING THEM, AND THEIR USE - Process for producing products which comprises
| 10-27-2011 |
| 20140206899 | METHOD FOR PURIFYING SULFONATED AROMATIC MONOMER - The present invention relates to an improved method for purifying a sulfonated aromatic monomer. The method is an economical method capable of providing a highly pure sulfonated aromatic monomer, in which a salt precipitation step and a recrystallization step are simplified while maintaining the reaction conditions used in a conventional method for synthesizing the sulfonated aromatic monomer, and a purification process is carried out using an easily available and stable chemical substance. The sulfonated aromatic monomer obtained by the purification method will be useful for the preparation of a polymer for a polymer electrolyte membrane and will be advantageous to synthesize polymer with high molecular weight. | 07-24-2014 |
| 20140357891 | PROCESS FOR PREPARING A CROSS LINKING CATALYST FROM CASHEW NUT SHELL LIQUID - The present invention discloses synthesis of sulfonated, alkylated/arylated 3-pentadecyl phenols, (cross linking catalysts) starting from 3-pentadecyl phenol obtained from Cashew Nut Shell Liquid (CNSL). | 12-04-2014 |
| 562076000 | Plural carbons bonded directly to the nonsulfonate chalcogen (e.g., ethers, sulfones, etc.) | 1 |
| 20120149938 | Processes For The Preparation Of 2,5-Dihydroxybenzenesulfonic Acid Salts - Processes for the preparation of 2,5-dihydroxybenzenesulfonic acid salts of formula (I) and a crystalline form of potassium 2,5 2,5-dihydroxybenzenesulfonic acid are provided. | 06-14-2012 |
| 562078000 | Halogen attached indirectly to the sulfonate group by nonionic bonding | 1 |
| 20090069592 | METHOD FOR SYNTHESIZING RADIOACTIVE LIGAND HAVING 18F-LABELED FLUOROBENZENE RING - A phenyl tin compound is synthesized by using a derivative having various functional groups and a bromo- or iodo-benzene ring as a labeling material of a radioactive ligand. On the other hand, a novel hydroxytosyl iodobenzene compound having an electron-donating group is obtained by oxidizing iodobenzene having one or more electron-donating groups and reacting it with tosylic acid. Then, a diphenyliodonium salt which is a labeling precursor is synthesized by reacting the resulting compound with various phenyl tin compounds. Finally, a | 03-12-2009 |
| 562081000 | Plural oxygens bonded directly to the same benzene ring | 1 |
| 20100056823 | PREPARATION OF METALLIC DIHYDROXYBENZENEDISULFONATES - Metallic dihydroxybenzenedisulfonates are prepared, preferably from alkaline metals, from corresponding dihydroxybenzenedisulfonic acids, by reacting the dihydroxybenzenedisulfonic acid present in a sulfuric medium with an adequate amount of a salt including a sulfate or hydrogenosulfate anion. | 03-04-2010 |
| 562083000 | Halogen attached indirectly to the sulfonate group by nonionic bonding | 2 |
| 20100041917 | PROCESS FOR PREPARATION OF CARBONYL COMPOUND AND PRO-OXIDANT FOR PREPARATION OF CARBONYL COMPOUND - The invention provides a process for the preparation of a carbonyl compound in high efficiency by oxidizing an alcohol. The process for the preparation of a carbonyl compound of the present invention includes a step of oxidizing an alcohol in the presence of a compound of the formula (I) or a derivative or a salt thereof, and an oxidant, | 02-18-2010 |
| 20110218357 | PROCESSES FOR PREPARING 4-CHLOROBENZENESULFONIC ACID AND 4,4'-DICHLORODIPHENYL SULFONE - The invention relates to a process for preparing 4-chlorobenzenesulfonic acid from 2-chlorobenzenesulfonic acid and/or 3-chlorobenzenesulfonic acid, comprising the conversion of 2-chlorobenzenesulfonic acid and/or 3-chlorobenzenesulfonic acid to 4-chlorobenzenesulfonic acid in the presence of sulfuric acid at a temperature of 100 to 300° C. | 09-08-2011 |
| 562087000 | Acyclic carbon to carbon unsaturation containing | 1 |
| 20150119600 | Novel Optical Brightening Agent Used for the Papermaking Process - A new optical brightening agent 351 (OBA 351) 4,4″-Bis(2-sulfostyryl)biphenyl disodium salt (CAS 27344-41-8) is used on the wet-end papermaking process and coating papermaking process to increase the brightness of paper. The new OBA 351, when compared to the conventional OBA, is able to Obtain an additional 16 ISO brightness of performance. | 04-30-2015 |
| 562088000 | Plural benzene rings bonded directly to each other, or to the same acyclic carbon or acyclic carbon chain | 1 |
| 20120123154 | METHOD FOR PRODUCING BIARYL COMPOUND - A method for producing a biaryl compound represented by the formula (2) | 05-17-2012 |
| 562089000 | Polycyclo ring system consisting of benzene rings bonded directly to the sulfonate group | 2 |
| 20130018204 | EDGE-FUNCTIONALIZED GRAPHITIC MATERIAL THROUGH MECHANOCHEMICAL PROCESS AND MANUFACTURING METHOD THEREOFAANM JEON; In YupAACI Chungcheongbuk-doAACO KRAAGP JEON; In Yup Chungcheongbuk-do KRAANM BAEK; Jong BeomAACI Ulsan Metropolitan CityAACO KRAAGP BAEK; Jong Beom Ulsan Metropolitan City KR - Disclosed is an edge-functionalized graphitic material manufactured by using a mechanochemical process. The edge-functionalized graphitic material is manufactured by pulverizing graphite in the presence of a variety of atmospheric agents in the form of gas phase, liquid phase, or solid phase. The edge-functionalized graphitic material, which is a precursor applicable into various fields, is expected to replace the prior art oxidized graphite. | 01-17-2013 |
| 20150087858 | CARBON NANOTUBE SUSPENSIONS AND METHODS OF MAKING THE SAME - Carbon nanotube suspensions or dispersions include carbon nanotubes and a functional group attached to an aromatic polycyclic compound on a surface of the carbon nanotubes. The carbon nanotubes in the suspensions or dispersions are pretreated by exposing the carbon nanotubes to a solvent (such as N-cyclohexyl-2-pyrrolidone) and an acid (such as concentrated sulfuric acid). The carbon nanotubes pretreated according to this method can be dispersed or suspended in a solvent to prepare high concentration suspensions, dispersions and/or inks for various applications. | 03-26-2015 |
| 562091000 | Sulfonate group and alkyl group of at least four carbons bonded directly to the same benzene ring | 5 |
| 20150073176 | LINEAR ALKYLBENZENES FROM NATURAL OILS AND METHODS OF PRODUCING - A linear alkylbenzene product and a linear alkylbenzene sulfonate product from a natural oil are provided. The linear alkylbenzene product comprises alkylbenzenes having the formula C | 03-12-2015 |
| 562093000 | Processes including alkylation of a benzene ring, and the products thereof | 2 |
| 562094000 | The alkylating agent is an olefin | 2 |
| 20140081043 | Method For The Preparation of Low Overbased Alkyltoluene Sulfonate - Disclosed is a method for improving filtration in the preparation of an alkaline earth metal alkyltoluene sulfonate concentrate by selectively controlling the meta, ortho, para isomer distribution of the alkyl group of the alkyltoluene produced by the process comprising alkylating toluene with at least one isomerized normal alpha olefin, having from about 18 to about 30 carbon atoms and having from 20% to 100% branching in an alkylation process which includes monitoring % isomer formation and adjusting an alkylation process parameter in order to provide a target specified isomer content of less than 38% meta-isomer content; and thereafter sulfonating and neutralizing to produce a low base number sulfonated alkyltoluene concentrate having a Base Number of about 2 to 60 (ASTM D 2896). | 03-20-2014 |
| 20150126770 | REMOVAL OF LIGHT ALKYLATED AROMATICS FROM THE HEAVY ALKYLATED AROMATICS STREAM - A process for increasing the production of monoalkylbenzenes is presented. The process includes utilizing a transalkylation process to convert dialkylbenzenes to monoalkylbenzenes. The feed to the transalkylation process has alkylated toluenes and alkylated ethylbenzenes and other alkylated aromatics having small alkyl groups with less than 8 carbons removed to improve the efficiency of the transalkylation process. The recycled dialkylbenzenes and a portion of the recycled benzene are converted to monoalkylbenzenes. | 05-07-2015 |
| 562095000 | Sulfonation processes | 2 |
| 20150148561 | LINEAR ALKYLBENZENES FROM NATURAL OILS AND METHODS OF PRODUCING - A linear alkyl benzene product and production of linear alkylbenzene from a natural oil are provided. A method comprises the step of deoxygenating the natural oils to form a stream comprising paraffins. The paraffins are dehydrogenated to provide mono-olefins. Then, benzene is alkylated with the mono-olefins under alkylation conditions to provide an alkylation effluent comprising alkylbenzenes and benzene. Thereafter, the alkylbenzenes are isolated to provide the alkylbenzene product. | 05-28-2015 |
| 20160145204 | PREPARATION OF SURFACTANTS VIA CROSS-METATHESIS - The present invention relates to compositions comprising alkene benzenes or alkene benzene sulfonates or alkylbenzenes or alkylbenzene sulfonates; methods for making alkene benzenes or alkene benzene sulfonates or alkylbenzenes or alkylbenzene sulfonates; where the benzene ring is optionally substituted with one or more groups designated R*, where R* is defined herein. More particularly, the present invention relates to compositions comprising 2-phenyl linear alkene benzenes or 2-phenyl linear alkene benzene sulfonates or 2-phenyl linear alkylbenzenes or 2-phenyl linear alkylbenzene sulfonates; methods for making 2-phenyl alkene benzenes or 2-phenyl alkene benzene sulfonates or 2-phenyl alkylbenzenes or 2-phenyl alkylbenzene sulfonates; where the benzene ring is optionally substituted with one or more groups designated R*, where R* is defined herein. | 05-26-2016 |
| 562099000 | Sulfonation utilizing sulfuric acid (e.g., sulfonation of benzene or toluene with sulfuric acid, etc.) | 1 |
| 20110046412 | Sulfonation of Polyhydroxyaromatics - The present invention provides improved process for the sulfonation of hydroxyaromatics amenable to direct isolation of the sulfonylated hydroxyaromatics in their free-acid forms. The process allows for the recyclization of sulfuric acid and minimizes waste. The starting materials are from a renewal resource, e.g., biomass, and contain detectable | 02-24-2011 |
