| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 558277000 |
Two identical or diverse alkyl groups bonded directly to the -O-C(=O)O- group (e.g., dimethyl carbonate, methyl ethyl carbonate, etc.)
| 45 |
| 558270000 |
Benzene ring bonded directly to the -O-C(=O)O- group
| 34 |
| 558265000 |
Plural -O-C(=O)O- groups attached indirectly to each other by nonionic bonding
| 14 |
| 558276000 |
Nitrogen or chalcogen attached indirectly to the -O-C(=O)O- group by acyclic nonionic bonding | 5 |
| 20090192325 | ENANTIOMERICALLY RESOLVING ACYLOXYALKYL THIOCARBONATES USED IN SYNTHESIZING ACYLOXYALKYL CARBAMATE PRODRUGS - Methods of enzymatically resolving acyloxyalkyl thiocarbonates useful in the synthesis of acyloxyalkyl carbamate prodrugs are disclosed. | 07-30-2009 |
| 20100048935 | PROCESS FOR PREPARING POLYETHER CARBONATE POLYOLS - The invention relates to a process for preparing polyether carbonate polyols by addition of alkylene oxides and carbon dioxide onto H-functional starter substances using DMC catalysts, wherein one or more starter substances are initially placed in the reactor and one or more starter substances are metered continuously into the reactor during the reaction. | 02-25-2010 |
| 20100179343 | METHOD OF PRODUCING AN OPTICALLY ACTIVE CYANOHYDRIN DERIVATIVE - The present invention relates to a method of producing an optically active cyanohydrin derivative, which comprises reacting an aldehyde or an asymmetrical ketone with a cyanating agent in the presence of a Lewis base and a titanium compound produced from a partial hydrolysate of titanium tetraalkoxide and an optically active ligand represented by formula (II) or a titanium oxoalkoxide compound represented by formula (I) [Ti | 07-15-2010 |
| 20110190527 | METHOD OF PRODUCING OPTICALLY ACTIVE N-(HALOPROPYL) AMINO ACID DERIVATIVE - The present invention provides a method for producing an optically active N-(halopropyl)amino acid derivative, wherein the method comprises the steps of obtaining a compound represented by formula (III) by reacting an optically active alanine ester represented by formula (I) or a salt thereof (hereinafter sometimes simply referred to as an “alanine ester”) with a halogenated propane represented by formula (II); and obtaining an optically active N-(halopropyl)amino acid derivative represented by formula (IV) by introducing a protecting group onto the nitrogen atom of the compound represented by formula (III). The present invention provides a method for efficiently producing an optically active N-(halopropyl)amino acid derivative. | 08-04-2011 |
| 20110213173 | PROCESS FOR REMOVING AN ALKANOL IMPURITY FROM AN ORGANIC CARBONATE STREAM - The invention relates to a process for removing an alkanol impurity from a stream containing an organic carbonate and the alkanol impurity, comprising contacting the stream with a catalyst to effect reaction of the alkanol impurity with the organic carbonate. | 09-01-2011 |
| 558275000 |
Benzene ring attached indirectly to the -O-C(=O)O- group by nonionic bonding | 4 |
| 20080319218 | Processes for Making and Using Benzyl Pentahydroxyhexylcarbamoylundecanoate - Provided are compounds and a process for preparing benzyl pentahydroxyhexylcarbamoylundecanoate (I) and uses thereof. | 12-25-2008 |
| 20120095249 | METHODS OF MAKING EFAVIRENS AND INTERMEDIATES THEREOF - The present invention provides a process for the preparation of Efavirenz. A compound of Formula 1: | 04-19-2012 |
| 20130012735 | SITAGLIPTIN INTERMEDIATE COMPOUNDS, PREPARATION METHODS AND USES THEREOF - Sitagliptin intermediate compounds of formula (f) and methods of preparation and use thereof are disclosed. Compounds of formula (f) are prepared by the following steps: compounds of formula (a) are subjected to electrophilic reaction with benzyl halides to form compounds of formula (b), which then react with compounds of formula (i) to form novel compounds of formula (e). Gignard agents formed from 2,4,5-trifluoro brmobenzene and magnesium metal react with compounds of formula (e) to afford compounds of formula (f), which are novel intermediates for the preparation of Sitagliptin intermediates of formula (g). Compounds of formula (f) are subjected to reduction by Pd/C, debenzylation, substitution of protecting group to form compounds of formula (g). Compounds of formula (a), (b), (i), (e), (f), and (g) have the following structures, in which R is protecting group of carboxyl and R | 01-10-2013 |
| 20130090492 | TRANSESTERIFICATION PROCESS USING MIXED SALT ACETYLACETONATES CATALYSTS - This invention is directed to a general catalyst of high activity and selectivity for the production of a variety of esters, particularly acrylate and methacrylate-based esters, by a transesterification reaction. This objective is achieved by reaction of an ester of a carboxylic or a carbonic acid, in particular of a saturated or unsaturated, typically, a 3 to 4 carbon atom carboxylic acid; with an alcohol in the presence of a catalyst comprising the combination of a metal 1,3-dicarbonyl complex (pref. Zn or Fe acetylacetonate) and a salt, in particular an inorganic salt, pref. ZnCl2, LiCI, NaCI, NH4CI or Lil. These catalysts are prepared from readily available starting materials within the reaction medium without the need for isolation (in-situ preparation). | 04-11-2013 |
| 558262000 |
Nitrogen attached directly to the -O-C(=O)O- group by nonionic bonding (e.g., oxime carbonates, urea carbonates, etc.) | 3 |
| 20100004478 | FLUORINATED ALCOHOLS - A compound comprising Formula 5 | 01-07-2010 |
| 20130072709 | Segmented Degradable Polymers and Conjugates Made Therefrom - The present invention provides, among other things, segmented, degradable polymeric reagents suitable for reaction with biologically active agents to form conjugates, the polymeric reagents comprising one or more polymer chains divided or separated by one or more degradable linkages into polymer segments having a molecular weight suitable for renal clearance. The polymeric reagents can have a substantially linear structure, a branched structure, or a multiarm structure. Each structure includes one or more linkages capable of degradation in vivo. | 03-21-2013 |
| 20130310592 | PROCESS FOR THE PREPARATION OF PYRAZOLE CARBOXYLIC ACID AMIDES - The invention relates to a process for the preparation of 3-difluoromethyl-1-methyl-1 H-pyrazole-4-carboxylic acid (9-dichloromethylene-1,2,3,4-tetrahydro-1,4-methano-naphthalen-5-yl)-amide by acylating the oxime oxygen of the compound of formula (VIII), in the presence of a solvent and an acylating agent of formula (XI) R | 11-21-2013 |
| 558261000 |
With preservative or stabilizer | 2 |
| 20090216038 | High-purity vinylene carbonate and a method of purifying vinylene carbonate - The present invention relates to the technical purification of vinylene carbonate (VC) by means of a simple thermal treatment with organic compounds which possess amidic nitrogen-hydrogen bonds, followed by a distillation and a melt crystallization. In this way VC of ultra-high purity is obtained. The high-purity vinylene carbonate can be stored and transported without stabilizer. | 08-27-2009 |
| 20140024850 | STABILIZATION OF DICARBONATE DIESTERS WITH PROTONIC ACIDS - By using protonic acids, diesters of dicarbonic acid may be stabilized against thermal and chemical decomposition over a relatively long period. Mixtures of diesters of dicarbonic acid and protonic acids are outstandingly suitable for preserving foods. | 01-23-2014 |
| 558263000 |
Oxygen bonded directly to the -O-C(=O)O- group by nonionic bonding (e.g., monoperoxycarbonates, etc.) | 1 |
| 20110178324 | MANUFACTURE OF TERTIOBUTYL HYDROPEROXYDE FROM RENEWABLE MATERIALS, TERTIOBUTYL HYDROPEROXIDE THUS OBTAINED, AND USES THEREOF - The present application relates to a method for manufacturing tert-butyl hydroperoxide that includes the following steps: a) fermenting renewable raw materials and optionally purifying the same to produce a mixture containing at least butanol; b) dehydrating the butanol into butane; c) converting the butane into isobutene and optionally hydrating the isobutene to produce tert-butanol; d) reacting the product of step c) with hydrogen peroxide so as to produce tert-butyl hydroperoxide; and e) isolating the tert-butyl hydroperoxide. The invention also relates to tert-butyl hydroperoxide containing carbon atoms from renewable resources, to the compositions containing said tert-butyl hydroperoxide, and also relates to the use thereof as a polymerization initiator. | 07-21-2011 |
| Entries |
| Document | Title | Date |
|---|
| 20080200711 | PROCESS FOR THE PREPARATION OF AN ALKANEDIOL AND A DIALKYL CARBONATE - An alkanediol and a dialkyl carbonate are prepared in a process comprising: | 08-21-2008 |
| 20080221348 | Industrial Process for Production of Aromatic Carbonate - It is an object of the present invention to provide a specific process that enables an aromatic carbonate to be produced with high selectivity and high productivity stably for a prolonged period of time on an industrial scale of no less than 1 ton per hour using a continuous multi-stage distillation column from a dialkyl carbonate and an aromatic monohydroxy compound containing specified amounts of an alcohol and an aromatic carbonate. Although there have been many proposals regarding the process of producing the aromatic carbonate using a reactive distillation method, these have all been on a small scale and a short operating time laboratory level. There have also been no disclosures whatsoever of a starting material containing necessary amounts of the alcohol and the aromatic carbonate for use in an industrial production, which have been considered to be disadvantageous in terms of the equilibrium, let alone the process and apparatus for the industrial production. According to the present invention, there is provided a specified continuous multi-stage distillation column, and there is also provided a specific process that enables the aromatic carbonate to be produced with high selectivity and high productivity stably for a prolonged period of time on an industrial scale of not less than 1 ton per hour from the dialkyl carbonate and the aromatic monohydroxy compound containing the alcohol and the aromatic carbonate. | 09-11-2008 |
| 20080281118 | EPOXIDATION CATALYST, A PROCESS FOR PREPARING THE CATALYST, AND A PROCESS FOR THE PRODUCTION OF AN OLEFIN OXIDE, A 1,2-DIOL, A 1,2-DIOL ETHER, A 1,2-CARBONATE, OR AN ALKANOLAMINE - A catalyst for the epoxidation of an olefin comprising a carrier and, deposited on the carrier, silver, a rhenium promoter, a first co-promoter, and a second co-promoter; wherein the quantity of the rhenium promoter deposited on the carrier is greater than 1 mmole/kg, relative to the weight of the catalyst; | 11-13-2008 |
| 20080300419 | Method for preparing organic carbonates - A method for preparing organic carbonates comprising subjecting an alcohol compound to oxidative carbonylation in the presence of carbon monoxide, oxygen and a liquid-phase catalytic system, to form a organic carbonates, wherein the liquid-phase catalytic system includes at least one catalyst, at least one additive and at least one ionic liquid composed of a cation, which has a nitrogen-containing heterocyclic structure, and an anion. Through using the additive and the ionic liquid, the activity and the performance of the catalyst are enhanced, and increased reaction rate and yield can be obtained. | 12-04-2008 |
| 20080319217 | Carbonic Acid Derivatives, Method for the Manufacture Thereof and the Use Thereof - The invention relates to carboxylic acid derivatives which are obtained by reacting an unsaturated dicarboxylic acid anhydride (A) with a hydrophobic reactive component (B) that contains at least one group reacting to carboxylic acid anhydrides and has an average molecular weight of 200 to 50,000 Dalton. The inventive carboxylic acid derivatives are excellent as a substance for preventing efflorescences on surfaces of hardened cementitious construction materials and/or hydrophobizing the corresponding cementitious systems. Furthermore, said cementitious products absorb considerably smaller amounts of water as a result of the inventive additives such that frost damage and premature rusting of the reinforcing steel can be significantly reduced. | 12-25-2008 |
| 20090082586 | PROCESS FOR PREPARING MONOCHLOROETHYLENE CARBONATE AND SUBSEQUENT CONVERSION TO VINYLENE CARBONATE - Processes for preparing monochloroethylene carbonate include reacting ethylene carbonate with chlorine gas in a liquid phase under irradiation of UV light and introducing a separate feed of an inert gas into the liquid phase. Monochloroethylene carbonate may be subsequently converted to vinylene carbonate. | 03-26-2009 |
| 20090281345 | PROCESS FOR THE PRODUCTION OF AN OLEFIN OXIDE, A 1,2-DIOL, A 1,2-DIOL ETHER, A 1,2-CARBONATE, OR AN ALKANOLAMINE - A process for the epoxidation of an olefin comprising contacting a reactor feed comprising an olefin, oxygen, and carbon dioxide, with a catalyst comprising a carrier and, deposited on the carrier, silver, a rhenium promoter, and a potassium promoter; wherein
| 11-12-2009 |
| 20090287011 | PROCESS FOR THE PREPARATION OF AN ALKYLENE CARBONATE AND AN ALKYLENE GLYCOL - The invention provides a reaction system for the production of an alkylene carbonate comprising: an epoxidation zone containing an epoxidation catalyst located within an epoxidation reactor; a carboxylation zone containing an bromide-containing carboxylation catalyst located within an alkylene oxide absorber; and one or more purification zones containing a purification absorbent capable of reducing the quantity of bromide-containing impurities in a feed comprising a recycle gas, which purification zones are located upstream from the epoxidation zone; and a process for the production of an alkylene carbonate and an alkylene glycol. | 11-19-2009 |
| 20100076213 | METHOD FOR PRODUCING A DIALKYL CARBONATE AND A DIOL - A method for producing a dialkyl carbonate and a diol, comprising: (a) effecting a transesterification reaction between a cyclic carbonate and an aliphatic monohydric alcohol in the presence of a transesterification catalyst, thereby obtaining a reaction mixture containing a product dialkyl carbonate and a product diol, (b) withdrawing a dialkyl carbonate-containing liquid from the reaction mixture, followed by separation of the dialkyl carbonate from the dialkyl carbonate-containing liquid, and (c) withdrawing a diol-containing liquid from the reaction mixture, followed by separation of the diol from the diol-containing liquid, wherein the cyclic carbonate contains a cyclic ether in an amount of from 0.1 to 3,000 ppm by weight, and the product dialkyl carbonate contains a carbonate ether of not more than 10,000 ppm by weight. | 03-25-2010 |
| 20110009660 | Process for the removal of HF from HF containing organic carbonates - Mixtures comprising organic carbonates, such as carbonates not substituted by fluorine, but especially fluorosubstituted organic carbonates, which are depleted in HF can be obtained from respective mixtures with a higher HF content by a step of stripping such mixture with an inert gas. For example, a reaction mixture comprising fluoroethylene carbonate and HF can be treated in this way. The mixture comprising organic carbonate which is depleted in HF can be distilled to obtain highly purified organic carbonate. | 01-13-2011 |
| 20120022282 | PROCESS FOR THE PREPARATION OF 2,4,6-OCTATRIENE-1-OIC ACID AND 2,4,6-OCTATRIENE-1-OL - The present invention concerns a process for synthesis of 2,4,6-octatriene-1-oic acid and 2,4,6-octatriene-1-ol, which comprises the following stages:
| 01-26-2012 |
| 20120116111 | Process for the preparation of fluoroalkyl (fluoro)alkyl carbonates and carbamates - Fluoroalkyl alkyl carbonates and fluorosubstituted carbamates which are suitable as additives or solvents in lithium ion batteries are prepared from fluoroalkyl fluoroformates and the respective alcohol or amine. Methanol is the preferred alcohol, dimethylamine and diethylamine are preferred amines. Fluoromethyl methyl carbonate is the preferred compound to be produced. Fluoroalkyl fluoroformates can be prepared from aldehydes and carbonyl fluoride. | 05-10-2012 |
| 20120226065 | PROCESS FOR REMOVING AN ALKANOL IMPURITY FROM A DIALKYL CARBONATE STREAM - The invention relates to a process for removing an alkanol impurity from a stream containing a dialkyl carbonate and the alkanol impurity, comprising contacting the stream with an aryl group containing ester and a catalyst to effect reaction of the alkanol impurity with the aryl group containing ester. | 09-06-2012 |
| 20120253058 | Manufacture of difluoroethylene carbonate, trifluoroethylene carbonate and tetrafluoroethylene carbonate - Difluoroethylene carbonate, trifluoroethylene and tetrafluoroethylene carbonate are produced by the reaction between elemental fluorine and ethylene carbonate or fluorinated ethylene carbonates with a lower degree of fluorination. | 10-04-2012 |
| 20130035500 | METHOD OF PREPARING FUNCTIONALIZED GRAPHENE - A method of preparing functionalized graphene, comprises treating graphene with an alkali metal in the presence of an electron transfer agent and coordinating solvent, and adding a functionalizing compound. The method further includes quenching unreacted alkali metal by addition of a protic medium, and isolating the functionalized graphene. | 02-07-2013 |
| 20130150607 | New Alkylaromatic Process - This invention is directed to a new process for making an alkylaromatic compound. In an embodiment of this invention, the process is directed to selective synthesizing an alkylaromatic compound comprising a high amount of dialkylate product. In general, this process involves contacting at least one alkylatable aromatic compound with an alkylating agent and a catalyst under suitable reaction conditions such that the resulting reactor effluent prior to any stripping step may be characterized by a dialkylate product content of at least 44 wt % and a trialkylate and higher polyalkylate product content of no more than 20 wt %. The alkylaromatic compounds produced have excellent thermal and oxidative stabilities, good additive solvency, and improved seal compatibility while maintaining good VI and low temperature properties. They are useful as lubricant basestocks and lubricant additives. | 06-13-2013 |
| 20130150608 | Production of Alkylaromatic Compounds - This invention is directed to an improvement in the process for the production of alkylaromatic compounds that results in lower levels of residual unreacted materials in the final product. This invention comprises: 1) alkylation of an aromatic compound with an alkylating agent and a catalyst to produce an effluent stream comprising an alkylaromatic compound and unreacted materials; 2) heating the effluent stream; 3) stripping the effluent stream in a stripping device in the presence of steam; 4) separating a stripping stream from the stripping device, the stripping stream rich in unreacted materials; and 5) separating a product stream from the stripping device, the product stream rich in alkylated aromatic compound. | 06-13-2013 |
| 20150065742 | METHOD FOR PRODUCING NITROUS ACID ESTER, AND METHOD FOR PRODUCING DIALKYL OXALATE AND DIALKYL CARBONATE - A method for producing nitrous acid ester in which nitric oxide, oxygen, and an alcohol are reacted, thereby generating nitrous acid ester includes a step of generating nitrous acid ester by supplying a bottom liquid from a bottom part of the reaction column, and nitric oxide and/or carbon monoxide, a step of supplying nitrous acid ester to the reaction column; a step of supplying a reaction liquid containing water, nitric acid, and the alcohol to a nitric acid condensing column from the reactor; and a step of separating a low-boiling point component by distillation from the reaction liquid under control of a concentration of the alcohol in a condensed liquid being generated at a bottom part of the nitric acid condensing column to be less than 4.0% by weight so as to introduce the condensed liquid into the reactor from the nitric acid condensing column. | 03-05-2015 |
| 20150315121 | Method for Preparing Carbonic Ester Using Organometallic Compound - A method for preparing a carbonic ester includes reacting carbon dioxide and a C | 11-05-2015 |
| 20160185709 | METHOD OF MAKING A TEMPLATING AGENT - A method for preparing 1-adamantyltrimethylammonium methylcarbonate or N,N-dimethyl-3,5-dimethylpiperidinium methylcarbonate is disclosed. The method comprises reacting dimethyl carbonate and 3,5-dimethylpiperidine or a 1-adamantylamine compound and in the presence of water in a sealed vessel at a temperature of from 80 to 200° C. The 1-adamantylamine compound is 1-adamantylamine, 1-adamantylmethylamine, or mixtures thereof. | 06-30-2016 |
