| Patent application number | Description | Published |
|---|
| 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 |
| 20090118551 | Integrated Separation and Preparation Process - Integrated separation and preparation process comprising a gas separation process wherein a first component is separated from a mixture of components by diffusion of the first component through a porous partition into a stream of sweeping component; and a preparation process wherein the sweeping component is used as feed. Separation unit and device for use in such a process and industrial set-up for use in such a process. | 05-07-2009 |
| 20090270657 | PROCESS FOR THE PREPARATION OF A 1,2-ALKYLENE DIOL AND A DIALKYLCARBONATE - The present invention relates to a process for the preparation of a 1,2-alkylene diol and a dialkylcarbonate, comprising the steps of
| 10-29-2009 |
| 20100121078 | PROCESS FOR PREPARING ALKANEDIOL AND DIALKYL CARBONATE - The invention relates to a process for the preparation of an alkanediol and a dialkyl carbonate comprising:
| 05-13-2010 |
| 20110108762 | PROCESS FOR THE PRODUCTION OF ALKYLENE CARBONATE - The invention relates to a process for the production of an alkylene carbonate by the reaction of an alkylene oxide with carbon dioxide in the presence of a phosphonium catalyst in which process (a) the alkylene oxide, carbon dioxide and phosphonium catalyst are continuously introduced into a reaction zone from which a product stream containing alkylene carbonate and phosphonium catalyst is withdrawn; (b) alkylene carbonate and a stream containing phosphoniura catalyst are separated from the product stream; (c) the alkylene carbonate, separated in step (b), is recovered as product; and (d) the stream containing phosphoniura catalyst, separated in step (b), is recycled to the reaction zone, in which process a treatment of alkylene carbonate and/or catalyst with a sorption agent comprising carbon is carried out. | 05-12-2011 |
| 20110151516 | PROCESS FOR THE EXTRACTION OF SUGARS AND LIGNIN FROM SOLID BIOMASS - A process for the extraction of sugars and/or lignin from lignocellulose-containing solid biomass is provided. | 06-23-2011 |
| 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 |
| 20120107887 | PROCESS FOR THE PRODUCTION OF ALCOHOLS FROM BIOMASS - Alcohols useful as fuel compositions are produced from biomass by: contacting the biomass with a cooking liquor containing 1 to 20 wt %, based on the cooking liquor, of sodium hydroxide, and under conditions effective to provide a pulp stream containing pulp having a lignin content of 5% to 20% by weight, based on the pulp washing the pulp stream; hydrolyzing the washed pulp stream with an enzyme solution; fermenting the hydrolyzate in the presence of a microorganism, one alcohol having 2 to 18 carbon atoms. | 05-03-2012 |
| 20120156741 | PROCESS FOR THE PRODUCTION OF ALCOHOLS FROM BIOMASS - Alcohols useful as fuel compositions are produced from biomass by pretreating the biomass prior to hydrolysis and fermentation. In the pretreatment, the biomass is contacted with an aqueous solution containing a dilute acid with concentration of up to 10 wt % producing a predigested stream containing an aqueous liquor that contains at least a portion of hemicelluloses and a residual biomass that contains celluloses and lignin; separating at least a portion of the aqueous liquor from the residual biomass providing an aqueous liquor stream and a pre-digested biomass stream; then contacting the pre-digested biomass stream with a cooking liquor containing at least one alkali selected from the group consisting of sodium hydroxide, sodium carbonate, sodium sulfide, potassium hydroxide, potassium carbonate, ammonium hydroxide, and mixtures thereof and water. A process that allows for higher recovery of carbohydrates and thereby increased yields is provided. | 06-21-2012 |
| 20120156748 | PROCESS FOR TREATMENT OF A LIGNOCELLULOSIC MATERIAL - A process for treatment of a lignocellulosic material comprising contacting the lignocellulosic material with a solution of chloride ions, which solution comprises a concentration of chloride ions in the range from equal to or more than 1 ppm weight to equal to or less than 350 ppm weight based on the total weight of the solution; at a temperature in the range from equal to or more than 120° C. to equal to or less than 200° C.; and at a pH in the range from equal to or more than 0.1 to equal to or less than 4. | 06-21-2012 |
| 20130071900 | PROCESS FOR PROCESSING A LIGNOCELLULOSIC MATERIAL - Calcium-containing lignocellulosic material is converted at a temperature in the range from equal to or more than 120° C. to equal to or less than 210° C. with an aqueous acid solution containing one or more inorganic acids and having a pH in the range from equal to or more than 1.8 to equal to or less than 4.0 to produce a mixture, containing pretreated lignocellulosic material and aqueous acid solution, having an overall pH in the range from equal to or more than 3.0 to equal to or less than 4.5. The process allows reduction in the formation of insoluble salts. | 03-21-2013 |
| 20130071901 | PROCESS FOR THE CONVERSION OF A XYLAN-CONTAINING FEED - A xylan-containing feed is contacted, in the first reactor essentially operated at plug flow, with an aqueous solution of an acid at a temperature in the range from equal to or more than 140° C. to equal to or less than 210° C. to produce an intermediate product. Then, the intermediate product is contacted, in the second reactor which comprises a continuously stirred tank reactor, with an aqueous solution of an acid at a temperature in the range from more than 130° C. to equal to or less than 200° C. to produce a final product. | 03-21-2013 |
| 20130157334 | PROCESS FOR CONVERTING A LIGNOCELLULOSIC BIOMASS - A process for converting a lignocellulosic biomass comprising
| 06-20-2013 |
| 20140024093 | PROCESS FOR THE PRODUCTION OF DIGESTED BIOMASS USEFUL FOR CHEMICALS AND BIOFUELS - In the pretreatment, the biomass is contacted with a solution containing at least one α-hydroxysulfonic acid thereby at least partially hydrolyzing the biomass to produce a pretreated stream containing a solution that contains at least a portion of hemicelluloses and a residual biomass that contains celluloses and lignin; separating at least a portion of the solution from the residual biomass providing an solution stream and a pretreated biomass stream; then contacting the pretreated biomass stream with a cooking liquor containing at least one alkali selected from the group consisting of sodium hydroxide, sodium carbonate, sodium sulfide, potassium hydroxide, potassium carbonate, ammonium hydroxide, and mixtures thereof and water. A process that allows for higher recovery of carbohydrates and thereby increased yields is provided. Alcohols useful as fuel compositions are also produced from biomass by pretreating the biomass prior to hydrolysis and fermentation. | 01-23-2014 |
| 20140120596 | PROCESS FOR PRETREATING A LIGNOCELLULOSIC MATERIAL - A process for pretreating a lignocellulosic material is provided. The process comprises mixing the lignocellulosic material and an alkaline aqueous solution, in a solid to liquid weight ratio of equal to or more than 25:75 to equal to or less than 60:40, in a mixer to produce an aqueous slurry and heat-treating the aqueous slurry at a temperature in the range from equal to or more than 50° C. to equal to or less than 200° C. to produce a heat-treated aqueous slurry comprising a pretreated lignocellulosic material. The lignocellulosic material has a lignin content in the range from equal to or more than 10 wt % to equal to or less than 50 wt %, based on the total weight of the lignocellulosic material. The alkaline aqueous solution has a pH of equal to or more than 9.0. | 05-01-2014 |
| 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 |
