| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 568038000 | Thioethers | 19 |
| 568039000 | Oxygen containing | 12 |
| 568041000 | Carbonyl containing (e.g., aldehyde containing, etc.) | 7 |
| 20100113833 | Novel Catalysts and Process for Dehydrating Glycerol - A process for preparing acrolein from glycerol using an acidic solid-state catalyst which comprises tungsten compounds and further promoters. | 05-06-2010 |
| 20100125155 | ALDEHYDE-FUNCTIONALIZED POLYETHERS AND METHOD OF MAKING SAME - Aldehyde-functionalized polyethers containing thiomethylaldehyde groups are described. Also described is a method of preparing the aldehyde-functionalized polyethers. These functionalized polyethers may be useful for protein conjugation, surface modification, and for the formation of hydrogel adhesives and sealants which are useful for medical applications. | 05-20-2010 |
| 20120022295 | PROCESS FOR PREPARING 3-(METHYLTHIO)PROPANAL - The present invention provides a process for preparing 3-(methylthio)propanal which can sufficiently decrease the production of high-boiling impurities as a by-product. The process comprises reacting acrolein and methyl mercaptan in the presence of Allylamines (I), Triallylamines (II), and preferably an optional organic acid. The preferred amount of Allylamines (I) is 0.001 to 0.50 mol per 1 mol of Triallylamines (II). | 01-26-2012 |
| 20120165573 | PROCESS FOR PREPARING METHYLMERCAPTOPROPIONALDEHYDE - A process for preparing methylmercaptopropionaldehyde in a single reaction unit, is provided. According to the preferred embodiment, the process comprises, simultaneously contacting a gaseous mixture comprising acrolein with a liquid mixture comprising methylmercaptopropionaldehyde, methyl mercaptan, a catalyst and methylmercaptopropionaldehyde methyl thiohemiacetal in the reactive absorber; absorbing the acrolein from the gaseous mixture into the liquid mixture; reacting the absorbed acrolein with the methyl mercaptan or the methylmercaptopropionaldehyde methyl thiohemiacetal to obtain methylmercapto-propionaldehyde; removing gaseous impurities and by-products from the liquid mixture; and separating the obtained methylmercaptopropionaldehyde product from the reactive absorber, directing a portion of the separated product to storage or further processing and recycling the remaining portion to the reactive absorber; wherein the methyl mercaptan optionally comprises dimethyl sulfide or dimethyl ether. | 06-28-2012 |
| 20140051890 | PROCESS FOR PREPARING METHYLMERCAPTOPROPIONALDEHYDE - A process for preparing methylmercaptopropionaldehyde in a single reaction unit, is provided. According to the preferred embodiment, the process comprises, simultaneously contacting a gaseous mixture comprising acrolein with a liquid mixture comprising methylmercaptopropionaldehyde, methyl mercaptan, a catalyst and methylmercaptopropionaldehyde methyl thiohemiacetal in the reactive absorber; absorbing the acrolein from the gaseous mixture into the liquid mixture; reacting the absorbed acrolein with the methyl mercaptan or the methylmercaptopropionaldehyde methyl thiohemiacetal to obtain methylmercapto-propionaldehyde; removing gaseous impurities and by-products from the liquid mixture; and separating the obtained methylmercaptopropionaldehyde product from the reactive absorber, directing a portion of the separated product to storage or further processing and recycling the remaining portion to the reactive absorber; wherein the methyl mercaptan optionally comprises dimethyl sulfide or dimethyl ether. | 02-20-2014 |
| 568042000 | Ketone containing | 2 |
| 20110130593 | SOLUBLE, PERSISTENT NONACENE DERIVATIVES - The present invention is directed towards a new class of semi-conducting nonacene derivatives. These compounds are all soluble species and they all possess superior resistance to oxidation as compared to their counterparts that lack the substitution patterns disclosed herein. | 06-02-2011 |
| 568043000 | Oxy or halogen containing | 1 |
| 20150011796 | PREPARATION OF [ALFA]-SULFENYLATED CARBONYL COMPOUNDS FROM PROPARGYLIC ALCOHOLS IN ONE STEP - The present relates to a method and a kit to produce an optically pure α-sulfenylated carbonyl compound comprising a primary or a secondary propargylic alcohol and an aryl thiol, a transition metal catalyst and a solvent. | 01-08-2015 |
| 568045000 | Plural oxygens containing | 4 |
| 20090259074 | PROCESS FOR PRODUCTION OF ALCOHOL COMPOUND - A process for the production of an alcohol compound represented by the formula (3): | 10-15-2009 |
| 568046000 | Polyhydroxy | 1 |
| 568047000 | Plural rings containing | 1 |
| 20120172628 | NOVEL THIO COMPOUNDS AND PREPARING METHOD OF THE SAME - Provided are novel thio compounds and a method for preparing the same. More particularly, there is provided a novel thio compound prepared by reacting an alkylation product of p-cresol and dicyclopentadiene with mercaptan and paraformaldehyde. Unlike existing antioxidants such as 2,6-di-t-butyl-4-methylphenol (BHT) being harmful to the human body due to the high volatility, the novel thio compounds of the present invention, which have the low volatility because of their high molecular weight, give no harm to the human body. Further, with excellent performances, they are suitable to replace the existing antioxidants. | 07-05-2012 |
| 568050000 | Thiol or plural thioethers containing | 2 |
| 20130197271 | DENDRIMERS AND METHODS OF PREPARING SAME THROUGH PROPORTIONATE BRANCHING - The present invention provides for monodispersed dendrimers having a core, branches and periphery ends, wherein the number of branches increases exponentially from the core to the periphery end and the length of the branches increases exponentially from the periphery end to the core, thereby providing for attachment of chemical species at the periphery ends without exhibiting steric hindrance. | 08-01-2013 |
| 20160152775 | Process for the Preparation of a Polyethersulfide | 06-02-2016 |
| 568051000 | Oxygen bonded directly to a ring | 1 |
| 568054000 | Sulfur bonded directly to a ring | 1 |
| 20090275783 | METHODS FOR PRODUCING OXIDIZED CYCLIC PHENOL SULFIDES - A method for producing an oxidized cyclic phenol sulfide which comprises the step of oxidizing a cyclic phenol sulfide of the following formula (1) as a raw material: | 11-05-2009 |
| 568056000 | Halogen containing | 2 |
| 20140235898 | Substituted Phenylsulfur Trifluoride and Other Like Fluorinating Agents - Novel substituted phenylsulfur trifluorides that act as fluorinating agents are disclosed. Also disclosed are methods for their preparation and methods for their use in introducing one or more fluorine atoms into target substrate compounds. Finally, various intermediate compounds for use in preparing substituted phenylsulfur trifluorides are provided. | 08-21-2014 |
| 20150353486 | Difluorocarbene From Fluoroform for Preparation of Difluoromethyoxyarenes, Difluorothiomethoxyarenes and Heteroarenes - A method for the transformation of hydroxyarenes, hydroxyheteroarenes, thiohydroxyarenes or thiohydroxyheteroarenes involves reaction with fluoroform in the presence of base comprising solution to yield a difluoromethoxyarene, diflurothiomethoxyheteroarene, or diflurothiomethoxyheteroarene. The transformation can be carried out at ambient room pressure or at elevated pressures. The transformation can be carried out at temperatures of 0 to 70° C. | 12-10-2015 |
| 568057000 | Thiol or plural thioethers containing | 3 |
| 20110130594 | CLASS OF SOLUBLE, PHOTOOXIDATIVELY RESISTANT ACENE DERIVATIVES - The present invention is directed towards a new class of semi-conducting acene derivatives. These compounds are all soluble species and they all possess superior resistance to photooxidation as compared to their counterparts that lack the substitution patterns disclosed herein. | 06-02-2011 |
| 20150126781 | METHOD FOR PRODUCING POLYTHIOL COMPOUND, POLYMERIZABLE COMPOSITION FOR OPTICAL MATERIAL, AND USES THEREOF - Provided is a method for producing a polythiol compound, comprising: a step for reacting a polyalcohol compound represented by the following formula (4) with thiourea in the presence of hydrogen chloride to obtain an isothiuronium salt; a step for adding, while maintaining a reaction solution containing the isothiuronium salt thus obtained at a temperature of 20° C. to 60° C., aqueous ammonia to the reaction solution within 80 minutes, thereby hydrolyzing the isothiuronium salt to obtain a polythiol compound containing, as a main component, one kind or two or more kinds selected from the group consisting of compounds represented by the following formulae (6) to (8); and a step for adding hydrochloric acid which is a concentration of 30% to 36% to the solution containing the polythiol compound thus obtained, washing the solution at a temperature of 30° C. to 55° C. to purify the polythiol compound. | 05-07-2015 |
| 20150133692 | METHOD FOR PRODUCING POLYTHIOL COMPOUND, POLYMERIZABLE COMPOSITION FOR OPTICAL MATERIAL, AND USES THEREOF - Provided is a method for producing a polythiol compound, comprising: a step for reacting 2-mercaptoethanol with a defined epihalohydrin compound at a temperature of 10° C. to 50° C. to obtain a defined polyalcohol compound; a step for reacting the polyalcohol compound thus obtained with thiourea in the presence of hydrogen chloride to obtain an isothiuronium salt; a step for adding, while maintaining a reaction solution containing the isothiuronium salt thus obtained at a temperature of 15° C. to 60° C., aqueous ammonia to the reaction solution within 80 minutes, thereby hydrolyzing the isothiuronium salt to obtain a defined polythiol compound; and a step for adding hydrochloric acid which is a concentration of 25% to 36% to the solution containing the polythiol compound thus obtained, washing the solution at a temperature of 10° C. to 50° C. to purify the polythiol compound. | 05-14-2015 |
| 568059000 | Acyclic | 2 |
| 20140221692 | Flow Reactor Vessels and Reactor Systems - The present invention discloses high pressure flow reactor vessels and associated systems. Also disclosed are processes for producing thiol compounds and sulfide compounds utilizing these flow reactor vessels. | 08-07-2014 |
| 568060000 | Symmetrical (e.g., dimethyl sulfide, etc.) | 1 |
| 20140051891 | PROCESS TO PURIFY DIALKYL SULFIDES - The invention relates to new processes to prepare low odor dialkyl sulfides, the low odor dialkyl sulfides obtainable by these processes and to methods of using these low odor dialkyl sulfides. Moreover, the invention relates to a process to prepare dialkyl sulfide borane complexes of high purity, the dialkyl sulfide borane complexes obtainable by this process and to a process for enantioselective reductions employing these dialkyl sulfide borane complexes of high purity as reducing agent. | 02-20-2014 |
