| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 558270000 | Benzene ring bonded directly to the -O-C(=O)O- group | 34 |
| 20090118530 | 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 required for producing a high-quality high-performance aromatic polycarbonate to be produced industrially in a large amount (e.g. not less than 1 ton/hr) stably for a prolonged period of time (e.g. not less than 1000 hours, preferably not less than 3000 hours, more preferably not less than 5000 hours) from a cyclic carbonate and an aromatic monohydroxy compound. When producing an aromatic carbonate from a cyclic carbonate and an aromatic monohydroxy compound, the above object can be attained by carrying out a step of: (I) producing a dialkyl carbonate and a diol using a reactive distillation column having a specified structure, and (II) producing the an aromatic carbonate using a first reactive distillation column having a specified structure. | 05-07-2009 |
| 20100185006 | NOVEL SIRTUIN ACTIVATING COMPOUNDS AND PROCESSES FOR MAKING THE SAME - The present invention includes methods for preparing resveratrol, resveratrol esters and substituted and unsubstituted stilbenes of the formula given below; where each Y is —O or halogen, each Z is —O or halogen, each n and each m is independently the value of 0, 1, 2, 3, 4 or 5, each A and each B is independently selected from P | 07-22-2010 |
| 20130150609 | PROCESS FOR PRODUCING AROMATIC CARBONATES - This invention provides a method for producing an alkylaryl carbonate comprising: a) contacting a stream comprising an aromatic hydroxy compound and a stream comprising a dialkylcarbonate in a reactive distillation column containing a bed of heterogeneous transesterification catalyst, the bed having a top and a bottom; and b) withdrawing a product stream comprising the alkylaryl carbonate from the reactive distillation column wherein the aromatic hydroxy compound is fed to the column at a first feed point located above the top of the catalyst bed. This invention further provides an apparatus suitable for carrying out this method. | 06-13-2013 |
| 20150315122 | Method of Preparing Aromatic Carbonate From Dialkyl Carbonate - A method of preparing an aromatic carbonate includes reacting a dialkyl carbonate with an aromatic alcohol in the presence of a catalyst represented by Formula 1. With the method, aromatic carbonate can be prepared from a dialkyl carbonate in high yield using a catalyst capable of increasing initial reactivity of the dialkyl carbonate. | 11-05-2015 |
| 20160122281 | PROCESS FOR PRODUCING AROMATIC CARBONATES - This invention provides a method for producing an alkylaryl carbonate comprising: a) contacting a stream comprising an aromatic hydroxy compound and a stream comprising a dialkylcarbonate in the presence of a transesterification catalyst in a reactive distillation column; b) withdrawing a first product stream comprising the alkylaryl carbonate from the reactive distillation column; c) withdrawing a second product stream comprising alkyl hydroxy compound and dialkylcarbonate; d) adding fresh dialkylcarbonate to the second product stream; e) separating the dialkylcarbonate from the alkyl hydroxy compound; and f) recycling the dialkylcarbonate from step e) to the reactive distillation column. | 05-05-2016 |
| 558271000 | Additional chalcogen bonded directly to the benzene ring | 2 |
| 20100087667 | METHODS OF SYNTHESIZING 1-(ACYLOXY)-ALKYL CARBAMATE PRODRUGS - The present disclosure relates to methods of synthesizing 1-(acyloxy)-alkyl carbamate prodrugs and to intermediates used in the methods. | 04-08-2010 |
| 20150336987 | NOVEL MONOPHOSPHITE LIGANDS HAVING A CARBONATE GROUP - A monophosphite ligand having a carbonate group is useful for hydroformylation. | 11-26-2015 |
| 558272000 | Nitrogen bonded directly to the benzene ring | 3 |
| 20100160665 | PROCESSES FOR THE PREPARATION AND PURIFICATION OF GABAPENTIN ENACARBIL - Gabapentin enacarbil was prepared and purified from intermediates such as 1-haloalkyl carbamate or carbonate and diacid acetal skeleton. For example, a 1-haloalkyl carbonate or carbamate was prepared by combining a C | 06-24-2010 |
| 20140350281 | PROCESS FOR MAKING MODULATORS OF CYSTIC FIBROSIS TRANSMEMBRANE CONDUCTANCE REGULATOR - The invention provides a process for the preparation of a compound of Formula 1, | 11-27-2014 |
| 20150045573 | Polyconjugates for Delivery of RNAi triggers to Tumor Cells In Vivo - The present invention is directed compositions for delivery of RNA interference (RNAi) triggers to integrin positive tumor cells in vivo. The compositions comprise RGD ligand-targeted amphipathic membrane active polyamines reversibly modified with enzyme cleavable dipeptide-amidobenzyl-carbonate masking agents. Modification masks membrane activity of the polymer while reversibility provides physiological responsiveness. The reversibly modified polyamines (dynamic polyconjugate or conjugate) are further covalently linked to an RNAi trigger. | 02-12-2015 |
| 558273000 | Nitrogen or additional chalcogen attached indirectly to the benzene ring by acyclic nonionic bonding | 2 |
| 20100137627 | 3-(2-Alkoxycarbonyloxy-Phenyl) Acrylic Acid Esters and Their Use as Precursors for the Delivery of Olfactory Compounds - A compound of formula (I), their use as precursors and a method of their production | 06-03-2010 |
| 20140243544 | METHOD OF MAKING 1-(ACYLOXY)-ALKYL CARBAMATE COMPOUNDS - Methods of preparing carbamate prodrugs of amine-containing drugs are provided. Carbonates useful in the synthesis of the carbamate prodrugs are also provided. | 08-28-2014 |
| 558274000 | Two benzene rings bonded directly to the -O-C(=O)O- group (i.e., diaryl carbonates) | 22 |
| 20080200712 | PROCESS FOR THE PREPARATION OF DIARYL CARBONATE - The invention relates to a process for the preparation of a diaryl carbonate by transesterification of an aromatic alcohol with a dialkyl carbonate in the presence of a transesterification catalyst during a period of time [t | 08-21-2008 |
| 20080293960 | Process For The Preparation Of Diaryl Carbonates Or Arylalkyl Carbonates From Dialkyl Carbonates - The invention provides a process for the preparation of diaryl carbonates and/or alkylaryl carbonates from dialkyl carbonates and aromatic hydroxy compounds using one or more intermediate condensers for improving heat integration. | 11-27-2008 |
| 20090076293 | PROCESSES FOR PREPARING DIARYL AND/OR ALKYLARYL CARBONATES FROM DIALKYL CARBONATES - Processes comprising: reacting a dialkyl carbonate and an aromatic hydroxy compound in the presence of a transesterification catalyst in a first reaction column, the first reaction column comprising a top section, a bottom section, a rectifying section in an upper portion of the column and a reaction zone below the rectifying section; feeding a bottom product from the first reaction column to a further reaction column; the bottom product comprising a diaryl carbonate, an alkylaryl carbonate, or both, and residual unreacted dialkyl carbonate and aromatic hydroxy compound; the further reaction column comprising a top section, a rectifying section in an upper portion of the column and a reaction zone below the rectifying section; and reacting the residual reacted dialkyl carbonate and aromatic hydroxy compound in the further reaction column; feeding a process stream to a distillation column, the process stream comprising a mixture of unreacted dialkyl carbonate and one or more reaction-product alcohols drawn from the first reaction column, the further reaction column, or both, such that the unreacted dialkyl carbonate is separated from the one or more reaction-product alcohols; and recycling the separated, unreacted dialkyl carbonate to the first reaction column; wherein the further reaction column comprises one or more condensers, and heat of condensation from the one or more condensers is fed back into the process. | 03-19-2009 |
| 20090099384 | Method of Remedying Deterioration of Insulating Film - The present invention provides a method of remedying deterioration of an insulating film which, during the remedial treatment of an insulating film deteriorated by plasma treatment, does not leave residual remedial agent on the wiring material such as the copper wiring layer, can be conducted using a dry process, and exhibits excellent applicability to mass production. The insulating film that has been deteriorated by plasma treatment is brought into contact with a remedial agent composed of a compound with a molecular structure having at least one of a nitro group and a carbonyl group, and at least one of a hydrocarbon group and a hydrogen group. | 04-16-2009 |
| 20090131706 | PROCESS FOR THE PREPARATION OF A DIARYL CARBONATE - The invention relates to a process for the preparation of a diaryl carbonate, which comprises: (i) contacting an aromatic non-hydroxy compound with a carboxylic acid of formula HOC(═O)R | 05-21-2009 |
| 20090137832 | PROCESSES FOR PURIFYING DIARYL CARBONATES - Processes comprising: transesterifying a dialkyl carbonate and an aromatic hydroxyl compound in the presence of a transesterification catalyst to provide a diaryl carbonate product comprising the transesterification catalyst as an impurity; subjecting the diaryl carbonate product to distillation in a first distillation column having an upper part and a lower part, wherein the upper part comprises a rectifying section and the lower part comprises a stripping section; and withdrawing a first sidestream from the first distillation column, wherein the first sidestream comprises a purified diaryl carbonate. | 05-28-2009 |
| 20090203933 | PROCESS FOR CONTINUOUS PRODUCTION OF ORGANIC CARBONATES OR ORGANIC CARBAMATES AND SOLID CATALYSTS THEREFORE - Processes for the alcoholysis, inclusive of transesterification and/or disproportionation, of reactants are disclosed. The alcoholysis process may include feeding reactants and a trace amount of soluble organometallic compound to a reactor comprising a solid alcoholysis catalyst, wherein the soluble organometallic compound and the solid alcoholysis catalyst each independently comprise a Group II to Group VI element, which may be the same element in various embodiments. As an example, diphenyl carbonate may be continuously produced by performing transesterification over a solid catalyst followed by disproportionation, where a trace amount of soluble organometallic compound is fed to the transesterification reactor. Also disclosed is a process for reactivating a spent solid alcoholysis catalyst, such as a catalyst useful for transesterifications and/or disproportionations, the process including removing polymeric materials deposited on the catalyst and re-depositing catalytically active metals on the solid catalyst. | 08-13-2009 |
| 20090287012 | PROCESS FOR PRODUCTION OF HIGH-PURITY DIARYL CARBONATE - A high-purity diphenyl carbonate, wherein the diphenyl carbonate is unsubstituted or substituted with a lower hydrocarbon, and has a halogen content of not more than 0.1 ppm, a content of an intermediate boiling point material of not more than 100 ppm, and a content of by-products having a higher boiling point than that of said diphenyl carbonate of not more than 100 ppm. A specific industrially useful process for the production of a high-purity diaryl carbonate in which a diaryl carbonate having low contents of intermediate boiling point and high boiling point impurities is produced is disclosed. As a starting material, a reaction mixture containing an alkyl aryl carbonate obtained through a transesterification reaction between a dialkyl carbonate and an aromatic monohydroxy compound is used. The process in which separation by distillation is carried out uses three distillation columns in a specified order. Moreover, it is particularly preferable if a reactive distillation column and the three distillation columns, each of which has a specified structure, and the three distillation columns are each operated under specified distillation conditions. | 11-19-2009 |
| 20100010252 | PROCESS FOR PREPARING DIARYL CARBONATES FROM DIALKYL CARBONATES - The invention provides a process for preparing diaryl carbonates from dialkyl carbonates and aromatic hydroxyl compounds using at least two reaction columns, a process section for recovering the dialkyl carbonate used in the reaction and for removing the alcohol of reaction, one or more process steps for removing the by-products obtained in the process which have a boiling point between that of the dialkyl carbonate and that of the alkyl aryl carbonate formed during the preparation of the diaryl carbonate, and a process step for further purification of the diaryl carbonate obtained from the reaction columns. | 01-14-2010 |
| 20100094039 | PROCESS FOR PREPARING DIARYL CARBONATES - The invention relates to a process for preparing diaryl carbonates by reacting monophenols with phosgene or aryl chlorocarbonates with elimination of hydrogen chloride in the presence of mixed hydroxides of elements from groups 2-14 of the periodic table (IUPAC, new) as heterogeneous catalysts. | 04-15-2010 |
| 20100197952 | PROCESS FOR PRODUCING DIPHENYL CARBONATE - Processes for producing diaryl carbonates are disclosed, where such processes may provide for the production of diaryl carbonates from green house gases, such as carbon dioxide. The processes disclosed advantageously integrate diethyl carbonate and diaryl carbonate production, eliminating the need for solvent-based extractive distillation, as is commonly required when producing diaryl carbonates from dimethyl carbonate, providing for the integration of separation equipment and raw material usage, and reducing the operating and capital requirements for such processes. In some embodiments, processes disclosed herein may be operated essentially closed-loop with respect to ethanol usage, for example. | 08-05-2010 |
| 20100261928 | PROCESS FOR PREPARING DIARYL CARBONATES OR ALKYL ARYL CARBONATES FROM DIALKYL CARBONATES - The invention relates to a process for preparing diaryl carbonates and/or alkyl aryl carbonates from dialkyl carbonates and aromatic hydroxy compounds using a reactive dividing wall column. | 10-14-2010 |
| 20100286431 | PROCESS FOR PREPARING DIARYL CARBONATE - A process for preparing diaryl carbonate and utilizing at least part of the process wastewater by increasing the concentration of the wastewater phases containing sodium chloride for the electrolysis by means of osmotic membrane distillation with simultaneous dilution of the sodium hydroxide solution obtained from the electrolysis for the diaryl carbonate production process (diphenyl carbonate process) is described. | 11-11-2010 |
| 20110046409 | PROCESS FOR CONTINUOUS PRODUCTION OF ORGANIC CARBONATES OR ORGANIC CARBAMATES AND SOLID CATALYSTS THEREFORE - Processes for the alcoholysis, inclusive of transesterification and/or disproportionation, of reactants are disclosed. The alcoholysis process may include feeding reactants and a trace amount of soluble organometallic compound to a reactor comprising a solid alcoholysis catalyst, wherein the soluble organometallic compound and the solid alcoholysis catalyst each independently comprise a Group II to Group VI element, which may be the same element in various embodiments. As an example, diphenyl carbonate may be continuously produced by performing transesterification over a solid catalyst followed by disproportionation, where a trace amount of soluble organometallic compound is fed to the transesterification reactor. Also disclosed is a process for reactivating a spent solid alcoholysis catalyst, such as a catalyst useful for transesterifications and/or disproportionations, the process including removing polymeric materials deposited on the catalyst and re-depositing catalytically active metals on the solid catalyst. | 02-24-2011 |
| 20110152558 | PROCESS FOR PRODUCING DIARYL CARBONATES - The present invention relates to a process for producing diaryl carbonates, which is to synthesize diaryl carbonates by oxidative carbonylation of phenols with carbon monoxide and oxygen, and in particular, to synthesize diphenyl carbonate from phenol. The present invention is characterized in that a catalytic system comprising a metal halide catalyst and one or more cocatalysts of nitrogenous heterocyclic compounds is used to increase the convertibility, selectivity and yield of this catalytic reaction. | 06-23-2011 |
| 20110172454 | METHOD FOR PRODUCING DIPHENYLCARBONATE HAVING CATALYST COMPRISING IONIC FLUIDS - The invention relates to a method for producing diphenylcarbonate while using a catalyst composition comprising ionic fluids. | 07-14-2011 |
| 20110245527 | PROCESS FOR PREPARING DIARYL CARBONATES AND POLYCARBONATES - The present invention relates to a process for the continuous preparation of diaryl carbonates from phosgene and at least one monohydroxy compound (monophenol) in the presence of catalysts, and also the use thereof for preparing polycarbonates. The hydrogen chloride formed in the reaction is converted by thermal oxidation into chlorine, with the chlorine being recirculated to the preparation of phosgene. In particular, the process comprises utilization of the hydrogen chloride formed for the process for preparing diphenyl carbonate (DPC process). | 10-06-2011 |
| 20120190878 | PROCESS FOR PRODUCING DIPHENYL CARBONATE - Processes for producing diaryl carbonates are disclosed, where such processes may provide for the production of diaryl carbonates from green house gases, such as carbon dioxide. The processes disclosed advantageously integrate diethyl carbonate and diaryl carbonate production, eliminating the need for solvent-based extractive distillation, as is commonly required when producing diaryl carbonates from dimethyl carbonate, providing for the integration of separation equipment and raw material usage, and reducing the operating and capital requirements for such processes. In some embodiments, processes disclosed herein may be operated essentially closed-loop with respect to ethanol usage, for example. | 07-26-2012 |
| 20120316357 | Method for Producing Diaryl Carbonate - The present invention provides a method for continuously producing a diaryl carbonate stably for a long time with high productivity. The method for producing a diaryl carbonate according to the present invention comprises a step (1) of obtaining an alkylaryl carbonate; a step (2) of obtaining a reaction product from the alkylaryl carbonate; a step (3) of separating the diaryl carbonate and a high boiling component from the reaction product; and a step (4) of recycling the high boiling component into the steps (1) and/or (2), wherein the high boiling component recycled in the step (4) includes a particular compound, and the particular compound satisfies a particular condition. | 12-13-2012 |
| 20140081039 | PROCESS FOR THE CONTINUOUS MANUFACTURE OF ARYL ALKYL CARBONATE AND/OR DIARYL CARBONATE USING VAPOR RECOMPRESSION - In an embodiment, a process for preparing an alkyl aryl carbonate and a diaryl carbonate, comprising: reacting a dialkyl carbonate and an aromatic hydroxy compound in a production column | 03-20-2014 |
| 20140275600 | 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. | 09-18-2014 |
| 20160002143 | METHOD FOR PRODUCING DIARYL CARBONATE - The present application relates to a method for the continuous production of diaryl carbonate from phosgene and of at least one monohydroxy compound (monophenol) in the presence of catalysts, and to the use thereof for the production of polycarbonates. | 01-07-2016 |
