| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 549484000 | The -C(=X)- is part of a -C(=X)X- group, wherein the X's are the same or diverse chalcogens | 60 |
| 20100324314 | PROCESS FOR PRODUCING ESTER COMPOUND | 12-23-2010 |
| 20130072698 | Method and Compounds for the Preparation of Monofluoromethylated Biologically Active Organic Compounds - Described are processes for the preparation of monofluoromethylated organic biologically active compounds, such as Fluticasone Propionate and Fluticasone Furoate, in the presence of fluorodecarboxylating reagents such as XeF | 03-21-2013 |
| 20130267719 | CONVERSION OF 5-(CHLOROMETHYL)-2-FURALDEHYDE INTO 5-METHYL-2-FUROIC ACID AND DERIVATIVES THEREOF - The present invention concerns the synthesis of 5-methyl-2-furoic acid, including ester, amide, and thioester derivatives of such from 5-(chloromethyl)-2-furaldehyde (CMF). The molecules so prepared are useful as intermediates for pharmaceutical, food, and fragrance molecules; as well as fuel or fuel additives. | 10-10-2013 |
| 20130345446 | METHOD FOR PREPARING A FURFURANOL-BASED COMPOUND AND 2-FURANCARBOXYLIC ACID-BASED COMPOUND USING AN IONIC LIQUID AS A SOLVENT - This invention relates to a method of, in an eco-friendly manner, preparing a furfuranol-based compound and a 2-furancarboxylic acid-based compound using an ionic liquid as a reaction solvent, which includes reacting a furfural-based compound with a hydroxide of an alkali metal or an alkaline earth metal using an ionic liquid as the solvent, thus obtaining a furfuranol-based compound and a 2-furancarboxylic acid-based compound, and in which water is not used as the reaction solvent, thus preventing the generation of reaction wastewater, and the ionic liquid used as the solvent can be easily recovered and reused. | 12-26-2013 |
| 20140194633 | CONVERSION OF 5-(CHLOROMETHYL)-2-FURALDEHYDE INTO 5-METHYL-2-FUROIC ACID AND DERIVATIVES THEREOF - The present invention concerns the synthesis of 5-methyl-2-furoic acid, including ester, amide, and thioester derivatives of such from 5-(chloromethyl)-2-furaldehyde (CMF). The molecules so prepared are useful as intermediates for pharmaceutical, food, and fragrance molecules; as well as fuel or fuel additives. | 07-10-2014 |
| 20160052903 | 5-(HYDROXYMETHYL) FURAN-2-CARBALDEHYDE (HMF) SULFONATES AND PROCESS FOR SYNTHESIS THEREOF - 5-(hydroxymethyl)furan-2-carbaldehyde (HMF)-sulfonates and a method of preparing the same are described. The method involves reacting a mixture of 5-(hydroxymethyl)furfural (HMF), with at least one of a) a trifluoromethanesulfonate anhydride (triflate), b) a p-toluene-sulfonyl halide (tosylate), and c) methane-sulfonyl halide (mesylate), and a reagent of either 1) a nucleophilic base or 2) a combination of a non-nucleophilic base and a nucleophile. The HMF-sulfonates (e.g., triflate, tosylate, mesylate, etc. analogs of HMF) can serve as precursor materials from which various derivative compounds can be synthesized. | 02-25-2016 |
| 549485000 | Plural -C(=X)X- groups bonded directly to the hetero ring | 52 |
| 20100152469 | Hydroxymethyl Furfural Oxidation Methods - A method of oxidizing hydroxymethylfurfural (HMF) includes providing a starting material which includes HMF in a solvent comprising water into a reactor. At least one of air and O | 06-17-2010 |
| 20110092720 | METHOD OF PRODUCING 2,5-FURANDICARBOXYLIC ACID - Provided is a method of producing FDCA by which high-purity FDCA can be produced in high yield. 2,5-furandicarboxylic acid is produced by: bringing 5-hydroxymethylfurfural into contact with an oxidant in an organic acid solvent in the presence of bromine and a metal catalyst; and allowing 5-hydroxymethylfurfural and the oxidant to react with each other while removing water produced by the reaction. | 04-21-2011 |
| 20120059178 | OXIDATION OF FURFURAL COMPOUNDS - The disclosure pertains to a process for oxidation of furan aldehydes such as 5-hydroxymethyl)furfural (HMF) and derivatives thereof such as 5-(alkoxymethyl)furfural (AMF), 5-(aryloxymethyl)furfural, 5-(cycloalkoxy-methyl)furfural and 5-(alkoxycarbonyl)furfural compounds in the presence of dissolved oxygen and a Co(II), Mn(II), Ce(III) salt catalyst or mixtures thereof. The products from HMF can be selectively chosen to be predominantly 2,5-diformylfuran (DFF), particularly by inclusion of an aliphatic ketone, like methyl ethyl ketone, or can be further oxidized to 2,5-furandicarboxylic acid (FDCA) by the omission of methyl ethyl ketone and inclusion of bromide. When the reactant is an ether derivative of HMF the products are surprisingly ester derivatives where either both the ether and aldehyde functional groups have been oxidized or just the ether function group thereby producing one or both of 5-ester-furan-2-acids (i.e., 5-alkoxycarbonylfurancarboxylic acids) or 5-ester-furan aldehydes, (i.e., -alkoxycarbonylfurfurals a. k. a, 5-(alkoxycarbonyl)furfural). | 03-08-2012 |
| 20120271060 | METHOD FOR THE PREPARATION OF 2,5-FURANDICARBOXYLIC ACID AND FOR THE PREPARATION OF THE DIALKYL ESTER OF 2,5-FURANDICARBOXYLIC ACID - A method for the preparation of 2,5-furan dicarboxylic acid includes the step of contacting a feed comprising a compound selected from the group consisting of 5-hydroxymethylfurfural (“HMF”), an ester of 5-hydroxymethyl-furfural, 5-methylfurfural, 5-(chloromethyl)furfural, 5-methylfuroic acid, 5-(chloromethyl)furoic acid, 2,5-dimethylfuran and a mixture of two or more of these compounds with an oxidant in the presence of an oxidation catalyst at a temperature higher than 140° C. | 10-25-2012 |
| 20120283452 | METHOD FOR THE PREPARATION OF 2,5-FURANDICARBOXYLIC ACID AND ESTERS THEREOF - A method for the preparation of 2,5-furandicarboxylic acid (“FDCA”) and/or an alkyl ester of FDCA includes the step of contacting a feed comprising a starting material selected from 5-alkoxymethylfurfural, 2,5-di(alkoxymethyl)furan and a mixture thereof with an oxidant in the presence of an oxidation catalyst. The feed may also comprise 5-hydroxymethylfurfural as a further starting material. | 11-08-2012 |
| 20120302768 | OXIDATION PROCESS TO PRODUCE A CRUDE AND/OR PURIFIED CARBOXYLIC ACID PRODUCT - Disclosed is an oxidation process to produce a crude carboxylic acid product carboxylic acid product. The process comprises oxidizing a feed stream comprising at least one oxidizable compound to generate a crude carboxylic acid slurry comprising furan-2,5-dicarboxylic acid (FDCA) and compositions thereof. Also disclosed is a process to produce a dry purified carboxylic acid product by utilizing various purification methods on the crude carboxylic acid. | 11-29-2012 |
| 20120302769 | OXIDATION PROCESS TO PRODUCE A CRUDE AND/OR PURIFIED CARBOXYLIC ACID PRODUCT - Disclosed is an oxidation process to produce a crude carboxylic acid product carboxylic acid product. The process comprises oxidizing a feed stream comprising at least one oxidizable compound to generate a crude carboxylic acid slurry comprising furan-2,5-dicarboxylic acid (FDCA) and compositions thereof. Also disclosed is a process to produce a dry purified carboxylic acid product by utilizing various purification methods on the crude carboxylic acid. | 11-29-2012 |
| 20120302770 | OXIDATION PROCESS TO PRODUCE A CRUDE AND/OR PURIFIED CARBOXYLIC ACID PRODUCT - Disclosed is an oxidation process to produce a crude carboxylic acid product carboxylic acid product. The process comprises oxidizing a feed stream comprising at least one oxidizable compound to generate a crude carboxylic acid slurry comprising furan-2,5-dicarboxylic acid (FDCA) and compositions thereof. Also disclosed is a process to produce a dry purified carboxylic acid product by utilizing various purification methods on the crude carboxylic acid. | 11-29-2012 |
| 20120302771 | OXIDATION PROCESS TO PRODUCE A CRUDE AND/OR PURIFIED CARBOXYLIC ACID PRODUCT - Disclosed is an oxidation process to produce a crude carboxylic acid product carboxylic acid product. The process comprises oxidizing a feed stream comprising at least one oxidizable compound to generate a crude carboxylic acid slurry comprising furan-2,5-dicarboxylic acid (FDCA) and compositions thereof. Also disclosed is a process to produce a dry purified carboxylic acid product by utilizing various purification methods on the crude carboxylic acid. | 11-29-2012 |
| 20120302772 | OXIDATION PROCESS TO PRODUCE A CRUDE AND/OR PURIFIED CARBOXYLIC ACID PRODUCT - Disclosed is an oxidation process to produce a crude carboxylic acid product carboxylic acid product. The process comprises oxidizing a feed stream comprising at least one oxidizable compound to generate a crude carboxylic acid slurry comprising furan-2,5-dicarboxylic acid (FDCA) and compositions thereof. Also disclosed is a process to produce a dry purified carboxylic acid product by utilizing various purification methods on the crude carboxylic acid. | 11-29-2012 |
| 20120302773 | OXIDATION PROCESS TO PRODUCE A CRUDE AND/OR PURIFIED CARBOXYLIC ACID PRODUCT - Disclosed is an oxidation process to produce a crude carboxylic acid product carboxylic acid product. The process comprises oxidizing a feed stream comprising at least one oxidizable compound to generate a crude carboxylic acid slurry comprising furan-2,5-dicarboxylic acid (FDCA) and compositions thereof. Also disclosed is a process to produce a dry purified carboxylic acid product by utilizing various purification methods on the crude carboxylic acid. | 11-29-2012 |
| 20130137882 | PROCESS FOR THE SYNTHESIS OF 2,5-FURANDICARBOXYLIC ACID - Process for the synthesis of 2,5-furandicarboxylic acid through the oxidation of -hydroxymethylfurfural in a flow of oxygenor a compound containing oxygen, catalysed by a supported catalyst containing a metal of the platinum group, carried out in aqueous solution in which the pH is maintained higher than 7 and lower than 12 through the addition of a weak base. | 05-30-2013 |
| 20130310578 | PROCESSES FOR PREPARING DIACIDS, DIALDEHYDES AND POLYMERS - Alcohols are catalytically oxidized to aldehydes, in particular to benzaldehyde and diformylfuran, which are useful as intermediates for a multiplicity of purposes. The invention also relates to the polymerization of the dialdehyde and to the decarbonylation of the dialdehyde to furan. | 11-21-2013 |
| 20130345447 | METHOD FOR PRODUCING PURIFIED DIALKYL-FURAN-2,5-DICARBOXYLATE VAPOR - Disclosed is a process to produce a purified vapor comprising dialkyl-furan-2,5-dicarboxylate (DAFD). Furan-2,5-dicarboxylic acid (FDCA) and an alcohol in an esterification zone to generate a crude diester stream containing dialkyl furan dicarboxylate (DAFD), unreacted alcohol, 5-(alkoxycarbonyl)furan-2-carboxylic acid (ACFC), and alkyl furan-2-carboxylate (AFC). The crude diester stream is fed to a flash evaporation zone to produce a vapor alcohol composition and a first liquid DAFD rich composition. At least a portion of the remaining alcohol can be separated from the first liquid DAFD rich composition to produce a second alcohol vapor and a second liquid DAFD rich composition, followed by separating AFC from the second liquid DAFD rich composition to product an AFC vapor and a partially purified DAFD rich composition, followed by separating a portion of the DAFD from the partially purified DAFD rich composition to produce a purified DAFD vapor. | 12-26-2013 |
| 20130345448 | METHOD FOR PRODUCING PURIFIED DIALKYL-FURAN-2,5-DICARBOXYLATE BY PHYSICAL SEPARATION AND SOLID LIQUID SEPARATION - A process to produce a purified dimethyl-furan-2,5-dicarboxylate (DMFD) by feeding furan dicarboxylic acid and methanol to an esterification zone to generate a crude diester composition, and purifying the crude diester composition with a physical separation process followed by crystallization, solid liquid separation, and optionally drying to produce a purified DMFD composition. A portion of the stream generated by solid liquid separation can be dissolved and subjected to crystallization and solid liquid separation repeatedly. The process is useful to produce a purified DMFD composition having a low b*, at least 98 wt. % DAFD solids, and a low concentration of 5-(methoxycarbonyl)furan-2-carboxylic acid (MCFC) and methyl 5-formylfuran-2-carboxylate (MFFC). | 12-26-2013 |
| 20130345449 | ESTERIFICATION OF FURAN-2,5-DICARBOXYLIC ACID TO A DIALKYL-FURAN-2,5-DICARBOXYLATE VAPOR WITH RECTIFICATION - A process for the manufacture of dialkyl furan-2,5-dicarboxylate (DAFD) vapor composition by feeding furan-2,5-dicarboxylic acid (“FDCA”) to an esterification reactor and in the presence of an alcohol compound such as methanol, conducting an esterification reaction to form an esterification vapor containing DAFD, unreacted alcohol compound, 5-(alkoxycarbonyl)furan-2-carboxylic acid (ACFC), and water, and continuously passing the esterification vapor through an ACFC condensing zone, that can be integral with the esterification reactor, in which at least a portion of the ACFC in the esterification vapor is converted to a liquid phase condensate, and continuously discharging the esterification vapor from the ACFC condensing zone as a DAFD vapor. There is also a DAFD vapor composition containing DAFD, water, unreacted alcohol, and by-products. | 12-26-2013 |
| 20130345450 | SEPARATING OFF 5 HYDROXYMETHYLFURFURAL (HMF) FROM REACTION SOLUTIONS BY STEAM DISTILLATION - Method for producing solutions which comprise 5-hydroxymethylfurfural (HMF) and have a reduced content of starting materials of the HMF synthesis or a reduced content of by-products of the HMF synthesis (hereinbelow called product solution), which comprises treating solutions which comprise
| 12-26-2013 |
| 20130345451 | PROCESS FOR PURIFYING CRUDE FURAN 2,5-DICARBOXYLIC ACID USING HYDROGENATION - A process to produce a dry purified furan-2,5-dicarboxylic acid (FDCA) is described. After oxidation of 5-(hydroxymethyl)furfural (5-HMF), a crude FDCA stream is produced that is fed to a crystallization zone followed by a solid-liquid displacement zone to form a low impurity slurry stream. The solids in the low impurity slurry stream are dissolved in a dissolution zone to produce a hydrogenation feed that is hydrogenated in a hydrogenation reactor to generate a hydrogenated FDCA composition. The hydrogenated FDCA composition is routed to a crystallization zone to form a crystallized produce stream that is separated from liquid in a solid-liquid separation zone to generate a purified wet cake stream containing FDCA that can be dried in a drying zone to generate a dry purified FDCA product stream. | 12-26-2013 |
| 20130345452 | PURIFYING CRUDE FURAN 2,5-DICARBOXYLIC ACID BY HYDROGENATION - A process for purifying a crude furan 2,5-dicarboxylic acid composition (cFDCA) by hydrogenation of a FDCA composition dissolved in a hydrogenation solvent such as water, and hydrogenating under mild conditions, such as at a temperature within a range of 130° C. to 225° C. by contacting the solvated FDCA composition with hydrogen in the presence of a hydrogenation catalyst under a hydrogen partial pressure within a range of 10 psi to 900 psi. A product FDCA composition is produced having a low amount of tetrahydrofuran dicarboxylic acid, a low b*, and a low amount of 5-formyl furan-2-carboxylic acid (FFCA). | 12-26-2013 |
| 20130345453 | PROCESS FOR THE DEPOLYMERIZATION OF A FURANDICARBOXYLATE CONTAINING POLYESTER - A product including a furandicarboxylate compound and diol is obtained from a furandicarboxylate containing polyester in a process, which includes reacting a polymer composition including furandicarboxylate containing polyester with water or an alcohol, such as an alkyl alcohol with from 1 to 12 carbon atoms, in the presence of a base, that is preferably selected from the group consisting of metal hydrides, metal alkoxides, metal carbonates, metal carboxylates, N-heterocyclic carbenes, amidines, guanidines, phosphazenes and mixtures thereof. | 12-26-2013 |
| 20140024843 | OXIDATION PROCESS TO PRODUCE A PURIFIED CARBOXYLIC ACID PRODUCT VIA SOLVENT DISPLACEMENT AND POST OXIDATION - Disclosed is a process to produce a dry purified carboxylic acid product comprising furan-2,5-dicarboxylic acid (FDCA). The process comprises oxidizing at least one oxidizable compound to generate a crude carboxylic acid slurry comprising FDCA, removing impurities from a crude carboxylic acid slurry in a liquid displacement zone to form a low impurity slurry stream. The low impurity slurry stream is further treated in a secondary oxidation zone to produce a secondary oxidation slurry stream which is routed to a crystallization zone to form a crystallized slurry stream. The crystallized slurry stream is cooled in a cooling zone and the resulting cooled crystallized slurry stream is routed to a solid-liquid separation zone to generate a purified wet cake stream comprising FDCA that is dried in a drying zone to generate a dry carboxylic acid product stream comprising purified FDCA (pFDCA). | 01-23-2014 |
| 20140024844 | OXIDATION PROCESS TO PRODUCE A PURIFIED CARBOXYLIC ACID PRODUCT VIA SOLVENT DISPLACEMENT AND POST OXIDATION - Disclosed is a process to produce a dry purified carboxylic acid product comprising furan-2,5-dicarboxylic acid (FDCA). The process comprises oxidizing at least one oxidizable compound selected from the following group: 5-(hydroxymethyl)furfural (5-HMF), 5-HMF esters (5-R(CO)OCH | 01-23-2014 |
| 20140066639 | OXIDATION PROCESS TO PRODUCE A CRUDE DRY CARBOXYLIC ACID PRODUCT - Disclosed is a process to produce a dry purified carboxylic acid product comprising furan-2,5-dicarboxylic acid (FDCA). The process comprises oxidizing at least one oxidizable compound selected from the following group: 5-(hydroxymethyl)furfural (5-HMF), 5-HMF esters (5-R(CO)OCH | 03-06-2014 |
| 20140073805 | PROCESS FOR MANUFACTURING ESTERS OF 2,5-FURANDICARBOXYLIC ACID - The present invention relates to an improved process for manufacturing of esters of 2,5-furandicarboxylic acid (FD-CA-esters) by reacting 2,5-furandicarboxylic acid (FDCA) with one or more alcohols in the presence of a heterogeneous catalyst. The use of the heterogeneous catalyst, which may be a Bronsted or Lewis acid, allows for production of high yields of FDCA esters. Furthermore, the catalyst can conveniently be recycled after completion of the reaction. | 03-13-2014 |
| 20140107355 | METHOD TO CONVERT MONOSACCHARIDES TO 5-(HYDROXYMETHYL) FURFURAL (HMF) USING BIOMASS-DERIVED SOLVENTS - Described is a process to produce hydroxymethyl furfural (HMF) from biomass-derived sugars. The process includes the steps of reacting a C5 and/or C6 sugar-containing reactant derived from biomass in a monophasic or biphasic reaction solution comprising water and a co-solvent. The co-solvent can be beta-, gamma-, and/or delta-lactones derived from biomass, tetrahydrofuran (THF) derived from biomass, and/or methyltetrahydrofuran (MTHF) derived from biomass. The reaction takes place in the presence of an acid catalyst and a dehydration catalyst for a time and under conditions such that at least a portion of glucose or fructose present in the reactant is converted to HMF. | 04-17-2014 |
| 20140128623 | Method of Synthesizing Low Color Furan Diesters - The present invention relates to a method of synthesizing a low colored furan-2,5-dicarboxylate derivative plasticizer by utilizing purified FDCA (pFDCA), which has very low level 5-formyl furan-2-carboxyic acid (FFCA) and very low level colored bodies, and an alcohol. | 05-08-2014 |
| 20140128624 | METHOD OF SYNTHESIZING LOW COLOR FURAN DIESTERS - The present invention relates to a method of making low colored bis(2-ethylhexyl) furan-2,5-dicarboxylate (BEHFD) plasticizer via mild hydrogenation of highly colored BEHFD. | 05-08-2014 |
| 20140142326 | PROCESS FOR PRODUCING DRY PURIFIED FURAN-2,5-DICARBOXYLIC ACID WITH OXIDATION OFF-GAS TREATMENT - Disclosed is a process for producing a dry, purified carboxylic acid product comprising furan-2,5-dicarboxylic acid (FDCA). Also disclosed is a method for treating an oxidation off-gas stream from such a process. The method features solvent as well as energy recovery from the off-gas stream. | 05-22-2014 |
| 20140142327 | PROCESS FOR PRODUCING DRY PURIFIED FURAN-2,5-DICARBOXYLIC ACID WITH OXIDATION OFF-GAS TREATMENT - Disclosed is a process for producing a dry, purified carboxylic acid product comprising furan-2,5-dicarboxylic acid (FDCA). Also disclosed is a method for treating an oxidation off-gas stream from such a process. The method features solvent as well as energy recovery from the off-gas stream. | 05-22-2014 |
| 20140142328 | OXIDATIVE PURIFICATION METHOD FOR PRODUCING PURIFIED DRY FURAN-2,5-DICARBOXYLIC ACID - Disclosed is a process to produce a dry purified carboxylic acid product comprising furan-2,5-dicarboxylic acid (FDCA). The process comprises oxidizing a feed stream comprising at least one oxidizable compound to generate a crude carboxylic acid slurry comprising FDCA, removing impurities from a crude carboxylic acid slurry via oxidative purification in a low temperature post-oxidation zone to form a low impurity slurry stream. The low impurity slurry stream is further treated in a high temperature post oxidation zone to produce a secondary oxidation slurry stream which is routed to a crystallization zone to from a crystallized slurry stream. | 05-22-2014 |
| 20140235880 | PROCESS FOR PURIFYING CRUDE FURAN 2,5-DICARBOXYLIC ACID USING HYDROGENATION - A process to produce a dry purified furan-2,5-dicarboxylic acid (FDCA) is described. After oxidation of 5-(hydroxymethyl)furfural (5-HMF), a crude FDCA stream is produced that is fed to a crystallization zone followed by a solid-liquid displacement zone to form a low impurity slurry stream. The solids in the low impurity slurry stream are dissolved in a dissolution zone to produce a hydrogenation feed that is hydrogenated in a hydrogenation reactor to generate a hydrogenated FDCA composition. The hydrogenated FDCA composition is routed to a crystallization zone to form a crystallized produce stream that is separated from liquid in a solid-liquid separation zone to generate a purified wet cake stream containing FDCA that can be dried in a drying zone to generate a dry purified FDCA product stream. | 08-21-2014 |
| 20140256964 | OXIDATION PROCESS TO PRODUCE A CRUDE DRY CARBOXYLIC ACID PRODUCT - Disclosed is a process to produce a dry purified carboxylic acid product comprising furan-2,5-dicarboxylic acid (FDCA). The process comprises oxidizing at least one oxidizable compound selected from the following group: 5-(hydroxymethyl)furfural (5-HMF), 5-HMF esters (5-R(CO)OCH | 09-11-2014 |
| 20140343305 | PROCESS FOR PRODUCING BOTH BIOBASED SUCCINIC ACID AND 2,5-FURANDICARBOXYLIC ACID - A process is provided for carrying out an oxidation on a feed including levulinic acid and/or a levulinic acid oxidation precursor to succinic acid, one or more furanic oxidation precursors of 2,5-furandicarboxylic acid and a catalytically effective combination of cobalt, manganese, and bromide components for catalyzing the oxidation of the levulinic acid component and of the one or more furanic oxidation precursors to produce both succinic acid and 2,5-furandicarboxylic acid products, which process comprises supplying the feed to a reactor vessel, supplying an oxidant, reacting the levulinic acid component and the one or more furanic oxidation precursors with the oxidant to produce both succinic acid and 2,5-furandicarboxylic acid (FDCA) and then recovering the succinic acid and FDCA products. A crude dehydration product from the dehydration of fructose, glucose or both, including 5-hydroxymethylfurfural, can be directly oxidized by the process to produce 2,5-furandicarboxylic acid and succinic acid. | 11-20-2014 |
| 20140357877 | ACID/SALT SEPARATION - A method for preparing a carboxylic acid, includes the steps of: providing magnesium carboxylate, wherein the carboxylic acid corresponding with the carboxylate is selected from the group made of 2,5-furandicarboxylic acid, fumaric acid, adipic acid, itaconic acid, citric acid, glutaric acid, maleic acid, malonic acid, oxalic acid and fatty acids having more than 10 carbon atoms; acidifying the magnesium carboxylate with hydrogen chloride (HCl), thereby obtaining a solution including carboxylic acid and magnesium chloride (MgCl | 12-04-2014 |
| 20140364632 | ACID/SALT SEPARATION - The invention provides a method for preparing a carboxylic acid, which method includes the steps of providing magnesium carboxylate, wherein the carboxylic acid corresponding with the carboxylate has a solubility in water at 20° C. of 80 g/100 g water or less; acidifying the magnesium carboxylate with HCl, thereby obtaining a solution comprising carboxylic acid and magnesium chloride (MgCl | 12-11-2014 |
| 20140364633 | PURIFYING CRUDE FURAN 2,5-DICARBOXYLIC ACID BY HYDROGENATION - A process for purifying a crude furan 2,5-dicarboxylic acid composition (cFDCA) by hydrogenation of a FDCA composition dissolved in a hydrogenation solvent such as water, and hydrogenating under mild conditions, such as at a temperature within a range of 130° C. to 225° C. by contacting the solvated FDCA composition with hydrogen in the presence of a hydrogenation catalyst under a hydrogen partial pressure within a range of 10 psi to 900 psi. A product FDCA composition is produced having a low amount of tetrahydrofuran dicarboxylic acid, a low b*, and a low amount of 5-formyl furan-2-carboxylic acid (FFCA). | 12-11-2014 |
| 20150011783 | OXIDATION PROCESS TO PRODUCE A CRUDE AND/OR PURIFIED CARBOXYLIC ACID PRODUCT - Disclosed is an oxidation process to produce a crude carboxylic acid product carboxylic acid product. The process comprises oxidizing a feed stream comprising at least one oxidizable compound to generate a crude carboxylic acid slurry comprising furan-2,5-dicarboxylic acid (FDCA) and compositions thereof. Also disclosed is a process to produce a dry purified carboxylic acid product by utilizing various purification methods on the crude carboxylic acid. | 01-08-2015 |
| 20150031903 | ESTERIFICATION OF FURAN-2,5-DICARBOXYLIC ACID TO A DIALKYL-FURAN-2,5-DICARBOXYLATE VAPOR WITH RECTIFICATION - A process for the manufacture of dialkyl furan-2,5-dicarboxylate (DAFD) vapor composition by feeding furan-2,5-dicarboxylic acid (“FDCA”) to an esterification reactor and in the presence of an alcohol compound such as methanol, conducting an esterification reaction to form an esterification vapor containing DAFD, unreacted alcohol compound, 5-(alkoxycarbonyl)furan-2-carboxylic acid (ACFC), and water, and continuously passing the esterification vapor through an ACFC condensing zone, that can be integral with the esterification reactor, in which at least a portion of the ACFC in the esterification vapor is converted to a liquid phase condensate, and continuously discharging the esterification vapor from the ACFC condensing zone as a DAFD vapor. There is also a DAFD vapor composition containing DAFD, water, unreacted alcohol, and by-products. | 01-29-2015 |
| 20150051412 | OXIDATION PROCESS TO PRODUCE A CRUDE AND/OR PURIFIED CARBOXYLIC ACID PRODUCT - Disclosed is an oxidation process to produce a crude carboxylic acid product carboxylic acid product. The process comprises oxidizing a feed stream comprising at least one oxidizable compound to generate a crude carboxylic acid slurry comprising furan-2,5-dicarboxylic acid (FDCA) and compositions thereof. Also disclosed is a process to produce a dry purified carboxylic acid product by utilizing various purification methods on the crude carboxylic acid. | 02-19-2015 |
| 20150065735 | METHOD FOR PRODUCING PURIFIED DIALKYL-FURAN-2,5-DICARBOXYLATE BY PHYSICAL SEPARATION AND SOLID LIQUID SEPARATION - A process to produce a purified dimethyl-furan-2,5-dicarboxylate (DMFD) by feeding furan dicarboxylic acid and methanol to an esterification zone to generate a crude diester composition, and purifying the crude diester composition with a physical separation process followed by crystallization, solid liquid separation, and optionally drying to produce a purified DMFD composition. A portion of the stream generated by solid liquid separation can be dissolved and subjected to crystallization and solid liquid separation repeatedly. The process is useful to produce a purified DMFD composition having a low b*, at least 98 wt. % DAFD solids, and a low concentration of 5-(methoxycarbonyl)furan-2-carboxylic acid (MCFC) and methyl 5-formylfuran-2-carboxylate (MFFC). | 03-05-2015 |
| 20150119588 | Process For The Production Of The Mixture 2,4 Furandicarboxylic Acid (FDCA) And 2,5 Furandicarboxylic Acid Via Disproportionation Reaction, Mixture Of 2,4-FDCA And 2,5-FDCA As A Result Of Disproportination Reaction, 2,4-FDCA Obtained By The Disproportionation Reaction Process And Use Of 2,4-FDCA - The present invention refers to a process for production of a mixture including 2,4-furandicarboxylic acid (2,4-FDCA) and 2,5 furandicarboxylic acid (2,5-FDCA) through the disproportionation route, using as base compounds oxidation products of furfural. This invention also relates to a process for production of 2,4-FDCA as a result of a disproportionation route and the use of 2,4-FDCA as a monomer or comonomer to synthesize esters or any compounds which can generate macromolecules, such as polyesters. | 04-30-2015 |
| 20150314272 | Conversion Of Alcohols To Alkyl Esters And Carboxylic Acids Using Heterogeneous Palladium-Based Catalysts - Disclosed are methods for synthesizing an ester or a carboxylic acid from an organic alcohol. To form the ester one reacts, in the presence of oxygen gas, the alcohol with methanol or ethanol. This reaction occurs in the presence of a catalyst comprising palladium and a co-catalyst comprising bismuth, tellurium, lead, cerium, titanium, zinc and/or niobium (most preferably at least bismuth and tellurium). Alternatively that catalyst can be used to generate an acid from that alcohol, when water is also added to the reaction mix. | 11-05-2015 |
| 20150322028 | FURAN-2,5-DICARBOXYLIC ACID PURGE PROCESS - Disclosed is an oxidation process to produce a crude carboxylic acid product carboxylic acid product. The process comprises oxidizing a feed stream comprising at least one oxidizable compound to generate a crude carboxylic acid slurry comprising furan-2,5-dicarboxylic acid (FDCA) and compositions thereof. Also disclosed is a process to produce a dry purified carboxylic acid product by utilizing various purification methods on the crude carboxylic acid. | 11-12-2015 |
| 20150322029 | FURAN-2,5-DICARBOXYLIC ACID PURGE PROCESS - Disclosed is an oxidation process to produce a crude carboxylic acid product carboxylic acid product. The process comprises oxidizing a feed stream comprising at least one oxidizable compound to generate a crude carboxylic acid slurry comprising furan-2,5-dicarboxylic acid (FDCA) and compositions thereof. Also disclosed is a process to produce a dry purified carboxylic acid product by utilizing various purification methods on the crude carboxylic acid. | 11-12-2015 |
| 20150336090 | NOVEL OXIDATION CATALYST, THE PROCESS FOR THE PREPARATION THEREOF AND GREEN PROCESS FOR SELECTIVE AEROBIC OXIDATION - Described herein is a novel, cost effective, stable and recyclable catalyst composition i.e. A-B-OMS, wherein ‘A’ is selected from noble and transition metals; ‘B’ is selected from alkali or alkaline earth metals; and OMS is octahedral molecular sieve which includes synthetic todorokite (OMS-1) and cryptomelane (OMS-2); and characterization thereof. Further the invention provides base free green process for selective aerobic oxidation of 5-hydroxymethylfurfural (HMF) catalysed by said catalyst composition under optimized reaction conditions to obtain high yield of 2,5-furandicarboxylic acid (FDCA) in a shorter span of time. Invention also provides for selective oxidation of glucose to Gluconic Acid, furfural to furoic Acid and glycerol to Glyceric acid. Invention can also applicable for the selective oxidation of hexoses, pentoses, disaccharides to corresponding acids. | 11-26-2015 |
| 20150368219 | Process for Purifying Crude Furan 2,5-Dicarboxylic Acid Using Hydrogenation - A process to produce a dry purified furan-2,5-dicarboxylic acid (FDCA) is described. After oxidation of 5-(hydroxymethyl)furfural (5-HMF), a crude FDCA stream is produced that is fed to a crystallization zone followed by a solid-liquid displacement zone to form a low impurity slurry stream. The solids in the low impurity slurry stream are dissolved in a dissolution zone to produce a hydrogenation feed that is hydrogenated in a hydrogenation reactor to generate a hydrogenated FDCA composition. The hydrogenated FDCA composition is routed to a crystallization zone to form a crystallized produce stream that is separated from liquid in a solid-liquid separation zone to generate a purified wet cake stream containing FDCA that can be dried in a drying zone to generate a dry purified FDCA product stream. | 12-24-2015 |
| 20150376154 | METHOD FOR PREPARING 2,5-FURANDICARBOXYLIC ACID - A method for preparing 2,5-furandicarboxylic acid (FDCA) by oxidizing 5-hydroxymethylfurfural (HMF) in water in the presence of a weak base and a supported catalyst comprising platinum and bismuth, in which the Bi/Pt molar ratio in the catalyst is between 0.1 and 0.3, and preferably between 0.15 and 0.3. | 12-31-2015 |
| 20160016926 | Process for Making 2,5-Furandicarboxylic Acid - A process is described for converting HMF to FDCA, comprising dissolving a quantity of HMF in water to form an aqueous solution including HMF, combining the aqueous solution including HMF with an oxygen source in the presence of a homogeneous metal salt catalyst, but in the substantial absence of any solvent for the HMF and the homogeneous metal salt catalyst other than water, and under conditions which are effective for oxidizing HMF in the presence of the catalyst to form FDCA, and then recovering an FDCA precipitate. | 01-21-2016 |
| 20160024039 | PROCESS FOR THE PREPARATION OF 2,5-FURAN-DICARBOXYLIC ACID - 2,5-Furandicarboxylic acid and methyl acetate are prepared in a continuous process by introducing a 5-methoxymethylfurfural-containing feedstock, an oxygen-containing gas, an oxidation catalyst and an acetic acid-containing solvent into a reactor; allowing 5-methoxymethylfurfural to react with oxygen and acetic acid in the presence of the oxidation catalyst to yield 2,5-furandicarboxylic acid as main product and methyl acetate; withdrawing 2,5-furandicarboxylic acid-containing product from the reactor and recovering 2,5-furandicarboxylic acid product; and withdrawing a vaporous stream containing methyl acetate from the reactor. | 01-28-2016 |
| 20160075672 | PROCESS AND INTERMEDIATES FOR THE PRODUCTION OF FURAN-2,5-DICARBOXYLIC ACID OR DERIVATIVES THEREOF - Disclosed is a method of making 5-formyl-2-furoic acid and furan-2,5-dicarboxylic acid. The method involves the use of 5-keto-aldonic acids as intermediates, as these can be subjected to ring formation by a cyclodehydration reaction under mild conditions. The 5-formyl-2-furoic acid or carboxylic derivative thereof is subjected to oxidation so as to form furan-2,5-dicarboxylic acid. The 5-keto-aldonic acid intermediates can be obtained by isomerization of uronic acids which can be obtained from sugar beet pulp, chicory pulp, fruit peals including orange peels, or non-terrestrial sources like seaweeds. A preferred source is sugar beet pulp. | 03-17-2016 |
| 20160130244 | OXIDATION PROCESS TO PRODUCE A PURIFIED CARBOXYLIC ACID PRODUCT VIA SOLVENT DISPLACEMENT AND POST OXIDATION - Disclosed is a process to produce a dry purified carboxylic acid product comprising furan-2,5-dicarboxylic acid (FDCA). The process comprises oxidizing at least one oxidizable compound selected from the following group: 5-(hydroxymethyl)furfural (5-HMF), 5-HMF esters (5-R(CO)OCH | 05-12-2016 |
| 20160167027 | OXIDATION CATALYST FOR FURFURAL COMPOUNDS AND APPLYING METHOD THEREOF | 06-16-2016 |
| 549486000 | The carbon of the -C(=X)X- group is bonded directly at the 3-position of the hetero ring | 2 |
| 20140187803 | Method for the Preparation of Palladium(I) Tri-Tert-Butylphosphine Bromide Dimer and Process for its Use in Isomerization Reactions - The invention provides a new method for the preparation of the dimeric Pd(l) tri-tert.-butylphosphine bromide complex, characterized by the chemical formula [Pd(μ-Br)(P | 07-03-2014 |
| 20180022698 | NOVEL METHODS, COMPOUNDS, AND COMPOSITIONS FOR ANESTHESIA | 01-25-2018 |
