Inventors list

Assignees list

Classification tree browser

Top 100 Inventors

Top 100 Assignees


Acyclic

Subclass of:

562 - Organic compounds -- part of the class 532-570 series

562000000 - ORGANIC COMPOUNDS (CLASS 532, SUBCLASS 1)

562400000 - Carboxylic acids and salts thereof

Patent class list (only not empty are listed)

Deeper subclasses:

Class / Patent application numberDescriptionNumber of patent applications / Date published
562553000 Nitrogen bonded to carbon of organic radical (e.g., amino acids, etc.) 108
562523000 Formation of carboxyl group by oxidation 97
562517000 Preparation by carbonylation 68
562598000 Unsaturated 62
562606000 Saturated lower fatty acids 48
562590000 Polycarboxylic 29
562579000 Oxy 27
562512200 Preparing by oxidation of hydrocarbon mixtures 16
562602000 Halogen 10
562577000 Aldehyde or ketone 8
562513000 Preparation from source of undetermined composition (e.g., industrial waste, etc.) 5
20120010429SEPARATION PROCESS - The present invention relates to a method of separating betaine and at least one other component from a sugar beet based fermentation solution. The invention is based on the use of a combination of SAC resins and WAC resins in a specific order and in specified proportions in a chromatographic SMB separation system. The chromatographic separation system is preferably a single integrated SMB system comprising both SAC and WAC resin beds.01-12-2012
20100145096Process for Recovery and Purification of Lactic Acid - The present invention relates to a process for recovery and purification of lactic acid from a fermentation broth containing lactic acid. The process comprises subjecting the fermentation broth to ultrafiltration and/or microfiltration to form a first permeate, concentrating the first permeate to form concentrated broth, subjecting the concentrated broth to supported liquid membrane for extraction of lactic acid into a separate stream, subjecting the extracted lactic acid solution to activated carbon for removal of colour, subjecting the extracted lactic acid solution to cation exchange resin for deminerization, subjecting the extracted lactic acid solution to anion exchange resin for removal of anionic impurities and concentrating the extracted lactic acid solution to desired concentration. The supported liquid membrane of the present invention contains an organic layer that comprises a earner, a co-extractant, a diluent and a stabilizer.06-10-2010
20110028759Process for the Purification of Organic Acids - A process for recovery and purification of an organic acid from a fermentation broth containing a salt form of the organic acid, comprises the steps of subjecting the fermentation broth to one of ultrafiltration and microfiltration to form a first permeate, concentrating the first permeate to form a concentrated broth, subjecting the concentrated broth to a supported liquid membrane for extraction of lactic acid into a separate stream comprising an extracted solution, subjecting the extracted solution to activated carbon for colour removal, a cation exchange resin for demineralization, and an anion exchange resin for removal of anionic impurities to form a post polished organic acid, filtering the post polished organic acid to remove impurities above a predetermined threshold and concentrating the post polished organic acid to a desired concentration.02-03-2011
20100317891METHOD FOR THE PURIFICATION OF ORGANIC ACIDS - The invention relates to a method for the purification of worts containing optionally neutralised organic acids, which comprises the following steps: (a) removal of a portion at least of the divalent cations and optionally of a portion at least of the monovalent cations by passing the same on a cationic resin; and (b) nano-filtration of the resulting solution.12-16-2010
20100179347PREPARATION OF FATTY ACIDS IN SOLID FORM - A method for making a fatty acid mineral salt is disclosed where liquid oils containing fatty acids are hydrolyzed using a base solution. A buffering agent is added to the hydrolyzed solution to maintain pH between 8.0 and 11.0 followed by a water soluble metal salt solution which causes a metathesis reaction with the hydrolyzed solution, forming a precipitates of fatty acid metal salts which are glycerin-free. The precipitates are filtered, washed and subsequently dried. The produced fatty acid metal salt is easier for the human body to digest than omega-3 fatty acid in oil form and also is less prone to oxidation and emitting of unpleasant odor.07-15-2010
562515000 Preparation by degradation of carbohydrates 3
20120172625PRODUCTION OF FORMIC ACID - Processes for producing formic acid from a carbohydrate-containing material include hydrolyzing a carbohydrate-containing material (e.g., cellulose) in the presence of a mineral acid to form an intermediate hydrolysate comprising one or more sugars, and hydrolyzing the intermediate hydrolysate to form a hydrolysate product including formic acid.07-05-2012
20100234638PRODUCTION OF FORMIC ACID - Processes for producing formic acid from a carbohydrate-containing material include hydrolyzing a carbohydrate-containing material (e.g., cellulose) in the presence of a mineral acid to form an intermediate hydrolysate comprising one or more sugars, and hydrolyzing the intermediate hydrolysate to form a hydrolysate product including formic acid.09-16-2010
20130204039TWO-STAGE, ACID-CATALYZED CONVERSION OF CARBOHYDRATES INTO LEVULINIC ACID - A method of producing levulinic acid from biomass is described. The method includes two acid treatment steps: first, treating biomass with a first aqueous acidic solution at a pH, for a time, and temperature such that at least a portion of pentosans contained within the biomass is extracted from the biomass, to yield pentosan-extracted biomass; second, treating the pentosan-extracted biomass with a second aqueous acidic solution at a pH, for a time, and a temperature, such that at least a portion of hexosans contained within the pentosan-extracted biomass are converted to levulinic acid.08-08-2013
562550000 Formation of carboxyl group by carbonation 3
20130172616Preparation of a,B-Ethylenically Unsaturated Carboxylic Salts By Catalytic Carboxylation Of Alkenes - In a process for preparing an alkali metal or alkaline earth metal salt of an α,β-ethylenically unsaturated carboxylic acid, a) a transition metal-alkene complex is reacted with CO07-04-2013
20120022290Process for Preparing Formic Acid by Reaction of Carbon Dioxide with Hydrogen - A process for preparing formic acid by reaction of carbon dioxide (01-26-2012
20110237830Novel catalyst mixtures - Catalysts comprised of at least one catalytically active element and at least one helper catalyst are disclosed. The catalysts may be used to increase the rate, the selectivity or lower the overpotential of chemical reactions. These catalysts may be useful for a variety of chemical reactions including in particular the electrochemical conversion of carbon dioxide to formic acid.09-29-2011
Entries
DocumentTitleDate
20090030231PROCESS OF PREPARING OPTICALLY ACTIVE B-HYDROXYCARBOXYLIC ACID DERIVATIVE - Disclosed is a process of preparing an optically active β-hydroxycarboxylic acid derivative comprising asymmetrically hydrogenating a β-keto compound in the presence of a catalyst comprising a transition metal complex compound having a 2,3-bis(dialkylphosphino)pyrazine derivative as a ligand. The pyrazine derivative is preferably a quinoxaline derivative, and the transition metal is preferably ruthenium. Preferred examples of the quinoxaline derivative are (S,S)-2,3-bis(tert-butylmethylphosphino)quinoxaline, (R,R)-bis(tert-butylmethylphosphino)quinoxaline, (S,S)-bis(tert-adamantylmethylphosphino)quinoxaline, and (R,R)-bis(adamantylmethylphosphino)quinoxaline.01-29-2009
20100087678PROCESS FOR PRODUCING POTASSIUM FORMATE - The present invention relates to a process for producing potassium formate. Formaldehyde, potassium hydroxide and isobutyraldehyde are reacted in water, at a molar ratio of 1.0:1.0:1.0 to 3.0:2.0:1.0 and at a temperature of 0-1000 C, preferably 30-700 C. The obtained reaction solution is neutralised to pH 4-6 and evaporated in a first step, whereby two phases are obtained, one organic phase and one aqueous phase, the latter comprising the main part of the potassium formate. The organic phase is subsequently separated from the aqueous phase, where after a final evaporation of the aqueous phase takes place at a pressure of 0.0-1.0 bar and a temperature of 160-2500 C, to obtain a melt of potassium formate. Water is added followed by filtration resulting in a solution having a content of >99% by weight of potassium formate, calculated on a water free basis.04-08-2010
20100041919PROCESS AND APPARATUS FOR RECOVERY OF ACETIC ACID FROM METHYL ACETATE - An apparatus and process are described for recovery of a carboxylic acid by hydrolysis of an ester in a mixture comprising the ester, an alcohol and water. The apparatus comprises a catalytic distillation column containing an acidic catalyst and a distillation column. Simultaneously and interdependently the alcohol is catalytically dehydrated to the corresponding ether and water, and said water reacts with the ester to generate a carboxylic acid rich stream from the catalytic distillation column. The acid is recovered by distillation in the distillation column. The process requires no added water. A second embodiment of the apparatus and process has means to co-feed one or both of added methanol and/or water with the feed to maintain substantially optimum operation independent of feed composition.02-18-2010
20090326267PROCESS FOR THE PREPARATION OF A GRANULAR MICROBIAL BIOMASS AND ISOLATION OF A COMPOUND THEREFROM - A process for the isolation of desired compound(s) from a microbial biomass is disclosed, wherein the microbial biomass (which, if necessary, is pretreated to give a dry matter content of from 25 to 80%) is granulated (e.g. by extrusion) and then dried to a dry matter content of at least 80%. The granulation of the biomass to granules significantly eases subsequent drying of the biomass (which can be stored as dried granules) and gives higher yields on extraction of the compound(s).12-31-2009
20100204511RECLAMATION OF HALIDE-CONTAMINATED FORMATE BRINES - A method of recovering formate from halide-contaminated formate brine that includes mixing a formate recovery solvent and the halide-contaminated formate brine; separating halide contaminants from the formate; and recovering the formate from the formate recovery solvent is disclosed.08-12-2010
20100217038PROCESS FOR CONVERTING LEVULINIC ACID INTO PENTANOIC ACID - A process for converting levulinic acid into pentanoic acid, the process comprising the following steps: (a) contacting a feedstock comprising levulinic acid under hydrogenating conditions, in the presence of hydrogen, with a non-acidic heterogeneous hydrogenation catalyst comprising a hydrogenation metal supported on a solid catalyst carrier to obtain a first effluent comprising gamma valerolactone; (b) contacting at least part of the first effluent under hydrogenating conditions, in the presence of hydrogen, with a strongly acidic catalyst and a hydrogenation metal to obtain a second effluent comprising pentanoic acid, wherein step (b) is operated at a conversion per pass of at most 70 wt % to obtain the second effluent comprising pentanoic acid and unconverted gamma valerolactone, and wherein part of the unconverted gamma valerolactone is recycled to step (a) and/or step (b).08-26-2010
20090247785METHODS AND SYSTEMS FOR PRETREATMENT OF AN OIL STREAM - In one embodiment, a method for pre-treating an oil comprises: introducing a oil, an alcohol, and an acid catalyst to a first continuous stirred tank reactor vessel, wherein the oil comprises free fatty acids; selectively reacting the oil and the alcohol to convert the free fatty acids to alkyl esters, wherein the reaction does not produce glycerol; removing a pre-treated oil stream from a lower portion of the first continuous stirred tank reactor, wherein the pre-treated oil stream comprises the alkyl esters; and recycling the alcohol and acid catalyst from an upper portion of the first continuous stirred tank reactor.10-01-2009
20110263895RECOVERY OF ACETIC ACID FROM WOOD EXTRACTS - In a process for recovering acetic acid from a wood extract, an aqueous wood extract is provided that contains acetic acid and dissolved hemicellulose containing uronic acid. A water insoluble solvent containing an extractant for the acetic acid is also provided. In a preferred embodiment, the solvent is undecane and the extractant is trioctylphosphine oxide. The wood extract is contacted with the solvent and extractant in order to extract the acetic acid from the wood extract. The acetic acid is then recovered from the solvent and extractant.10-27-2011
20090069595Process for Producing Fluorine-Containing Alkylsulfonylaminoethyl Alpha-Substituted Acrylate - There is provided a process for producing a fluorine-containing alkylsulfonylaminoethyl α-substituted acrylate of the formula [3] by reaction of an aminoethyl α-substituted acrylate of the formula [103-12-2009
20110178330METHOD FOR PREPARING (3S,4S)-4-((R)-2-(BENZYLOXY)TRIDECYL)-3-HEXYL-2-OXETANONE AND NOVEL INTERMEDIATE USED THEREFOR - The present invention relates to a high-yield method for preparing highly pure (3S,4S)-4-((R)-2-(benzyloxy)tridecyl)-3-hexyl-2-oxetanone using a metal salt of (2S,3S,5R)-2-hexyl-3,5-dihydroxyhexadecanoic acid as an intermediate.07-21-2011
20120022288PROCESS FOR THE PRODUCTION OF CARNITINE FROM BETA-LACTONES - The invention relates to a method for the production of L-carnitine, wherein a β-lactone, which is a 4-(halomethyl)oxetane-2-one, is converted into carnitine with trimethylamine (TMA), wherein the β-lactone is not subjected to a basic hydrolysis step before being contacted with the trimethylamine. The invention also relates to a carnitine having a unique impurity profile.01-26-2012
20120215026RECOVERY OF VOLATILE CARBOXYLIC ACIDS BY EXTRACTIVE EVAPORATION - A process for recovering a volatile carboxylic acid from an aqueous stream containing same comprising the steps of: (a) evaporating the aqueous stream to produce a vapour stream comprising the volatile carboxylic acid that has been vapourized and water vapour, which aqueous stream is produced by a conversion process using a lignocellulosic feedstock as a substrate; (b) contacting the vapour stream with an organic solvent so as to extract the volatile carboxylic acid present in the vapour stream, thereby producing a liquid stream comprising the organic solvent and the volatile carboxylic acid, and a water vapour stream, wherein the organic solvent has an atmospheric boiling point of at least about 150° C. and is insoluble in water; and (c) separating the volatile carboxylic acid from the organic solvent.08-23-2012
20100048946Bioabsorbable Surgical Composition - Compounds are provided which can form bioabsorbable compositions useful as adhesives or sealants for medical/surgical applications.02-25-2010
20110319657Process for the Preparation of Formic Acid - Process for obtaining formic acid by thermal separation of a stream comprising formic acid and a tertiary amine (I), in which a liquid stream comprising formic acid and a tertiary amine (I) in a molar ratio of from 0.5 to 5 is produced by combining tertiary amine (I) and a formic acid source, from 10 to 100% by weight of the secondary components present therein are separated off and formic acid is removed by distillation in a distillation apparatus at a bottom temperature of from 100 to 300° C. and a pressure of from 30 to 3000 hPa abs from the liquid stream obtained, the bottom discharge from the distillation apparatus being separated into two liquid phases and the upper liquid phase being recycled to the formic acid source and the lower liquid phase being recycled for separating off the secondary components and/or to the distillation apparatus.12-29-2011
20100130775PROCESS FOR THE CONVERSION OF ETHANOL TO ACETIC ACID - Process for the preparation of acetic acid comprising the steps of: providing a feed stream of water and ethanol; adding the feed stream to a recycle stream comprising unconverted ethanol and water; heating the admixture to a predetermined reaction temperature and passing the thus heated admixture over a catalyst being active in non-oxidative conversion of ethanol to acetic acid to obtain an effluent being rich in acetic acid; optionally cooling the effluent; separating the effluent into a stream rich in acetic acid being essentially free of water, a hydrogen containing stream, and a stream with unconverted amounts of ethanol, water and reactive derivates of acetic acid and optionally ethyl acetate; recycling the stream with unconverted amounts of ethanol and water to step (a); determining the amount of water in the recycle stream and adjusting the composition of the ethanol and water feed stream in step (a) to a water/ethanol mole ratio of between 0.3/0.7 to 0.6/0.4.05-27-2010
20120035392TUBULAR FLOW TYPE REACTOR - A tubular flow type reactor comprising: (1) inflow channels for respective inflow of at least two kinds of fluids to be used in a reaction, (2) an outer tube having a lumen that is capable of merging the fluids and of distributing the merged fluids for the reaction, (3) an outflow channel for outflow of a reaction product from the outer tube, and (4) an inner tube disposed in the lumen of the outer tube, wherein an annular flow channel is formed between the outer tube and the inner tube, and the inflow channels are connected to the outer tube along the direction tangential to the internal circumference of the outer tube in such a manner that the lumens of the inflow channels communicate with the lumen of the outer tube, i.e., the annular flow channel.02-09-2012

Patent applications in class Acyclic

Patent applications in all subclasses Acyclic