Patent application number | Description | Published |
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 |
20080255336 | PROCESS FOR THE PREPARATION OF DIARYL CARBONATE - Diaryl carbonate is prepared by reaction of an aromatic alcohol with a dialkyl carbonate, which dialkyl carbonate has been prepared by the reaction of an alkanol and an alkylene carbonate. | 10-16-2008 |
20090023884 | METHOD FOR STORAGE AND/OR TRANSPORT OF BISPHENOLACETONE AND METHOD FOR PRODUCING AROMATIC POLYCARBONATE - The invention relates to a method for producing aromatic polycarbonate, including the steps of:
| 01-22-2009 |
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 |
20100130751 | PROCESS FOR PREPARING AN 1,2-ALKYLENE CARBONATE - The invention relates to a process for preparing an 1,2-alkylene carbonate comprising: i) contacting carbon dioxide, an 1,2-alkylene oxide and a carbonation catalyst in a reactor to produce a crude reactor effluent containing carbon dioxide, light components, 1,2-alkylene carbonate and catalyst; ii) separating carbon dioxide and light components from the crude reactor effluent to form a bottoms stream containing 1,2-alkylene carbonate and catalyst; iii) distilling the bottoms stream formed in step (ii) to form a first distillation overhead stream containing 1,2-alkylene carbonate and a first distillation bottoms stream containing catalyst, and recycling at least part of the first distillation bottoms stream to the reactor; and iv) distilling the first distillation overhead stream to form a second distillation overhead stream and a second distillation bottoms stream containing 1,2-alkylene carbonate, and recycling at least part of the second distillation overhead stream to the reactor. | 05-27-2010 |
20110120402 | FUEL FORMULATIONS - A diesel fuel formulation is provided containing (i) a fatty acid alkyl ester (FAAE), in particular a fatty acid methyl ester (FAME), (ii) diethyl carbonate (DEC) and (iii) an additional diesel fuel component. Also provided is a diesel fuel supplement containing a FAAE and DEC. The inclusion of DEC, in a FAAE or in a diesel fuel formulation containing a FAAE, increase the stability of one or more glycerides present in the FAAE, and/or reduce the concentration of a stability-enhancing additive in the FAAE or fuel formulation, and/or reduce the amount of glyceride precipitates in the FAAE or fuel formulation. The glycerides are in particular saturated monoglycerides. | 05-26-2011 |
20110154727 | FUEL FORMULATIONS - Diesel fuel formulation is provided containing (i) FAME with ≦50% w/w saturates, (ii) dialkyl carbonate (DAC) and (iii) an additional diesel fuel component. Also provided is a diesel fuel supplement containing FAME and DAC, for use in a diesel fuel formulation. | 06-30-2011 |
20110162261 | FUEL FORMULATIONS - Fuel formulation, such as a gasoline or diesel fuel formulation, containing a dialkyl carbonate (DAC) having 6 or more carbon atoms is provided. | 07-07-2011 |
20110162262 | FUEL FORMULATIONS - A diesel fuel formulation containing (i) a lower molecular weight dialkyl carbonate (DAC) selected from dimethyl carbonate (DMC), diethyl carbonate (DEC) and mixtures thereof; (ii) di-n-butyl carbonate (DBC); and optionally (iii) an additional diesel fuel component is provided. | 07-07-2011 |
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 |
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 |
20120245319 | PROCESS FOR PREPARING DIARYL CARBONATES - The invention relates to a process for preparing a diaryl carbonate from a dialkyl carbonate and an aryl alcohol using a series of reactive distillation columns. | 09-27-2012 |
20130066099 | PROCESS FOR PREPARING ALKANEDIOL AND DIALKYL CARBONATE - The invention relates to a process for the preparation of an alkanediol and a dialkyl carbonate comprising: (a) reacting an alkylene carbonate and an alkanol in the presence of a transesterification catalyst to obtain a reaction mixture comprising dialkyl carbonate, unconverted alkanol, alkanediol, unconverted alkylene carbonate and an alkoxy alkanol impurity; (b) subjecting the reaction mixture to distillation in a first distillation column to obtain a top stream comprising dialkyl carbonate, alkanol and alkoxy alkanol impurity and a bottom stream comprising alkanediol and alkylene carbonate; (c) subjecting the bottom stream from the first distillation column to distillation in a second distillation column to obtain a top stream comprising alkanediol and a bottom stream comprising alkylene carbonate; (d) subjecting the lop stream from the first distillation column to distillation in a third distillation column in the presence of a catalyst to effect reaction of the alkoxy alkanol impurity with the dialkyl carbonate into a carbonate ether impurity, to obtain a top stream comprising alkanol and a bottom stream comprising dialkyl carbonate and carbonate ether impurity; and (e) subjecting the bottom stream from the third distillation column to distillation in a fourth distillation column to obtain a top stream comprising dialkyl carbonate and a bottom stream comprising dialkyl carbonate and carbonate ether impurity, and (f) recycling the bottom stream from the fourth distillation column to the first distillation column. | 03-14-2013 |
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 |
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 |