| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 562579000 | Oxy | 54 |
| 20090118541 | Method for producing glycolic acid - Provided is a production method of glycolic acid having a first step of preparing glycolonitrile from formaldehyde and hydrocyanic acid and a second step of hydrolyzing the glycolonitrile into glycolic acid directly or via a glycolate salt, which method can produce glycolic acid in easy production and purification steps while consuming less energy. In the production method, by carrying out the first and second steps continuously or by storing the glycolonitrile obtained in the first step at pH 4 or less and carrying out a hydrolysis reaction of the second step at from pH 5 to 9, a production yield of glycolic acid, activity for the production of glycolic acid and accumulated concentration of glycolic acid are improved, resulting in the production of glycolic acid having an improved purity and quality. | 05-07-2009 |
| 20110118504 | THERMAL SALT SPLITTING OF AMMONIUM CARBOXYLATES - The present invention relates to a process for preparing hydroxycarboxylic acids, preferably α- and β-hydroxycarboxylic acids, from ammonium carboxylates of the general formula | 05-19-2011 |
| 20110257433 | LIQUIDS - The present invention relates to an ionic liquid comprising an anion and a cation, wherein the cation is a primary, secondary or tertiary ammonium ion containing a protonated nitrogen atom. | 10-20-2011 |
| 20130165694 | PROCESS FOR THE SYNTHESIS OF CHOLINE SALTS - A method to synthesize choline salts to be used as inexpensive ingredients for application in ionic liquids or other applications is disclosed. | 06-27-2013 |
| 20130261337 | HYDROCARBOXYLATION OF METHYLENE DIPROPIONATE IN THE PRESENCE OF PROPIONIC ACID AND A HETEROGENEOUS CATALYST - Disclosed is a process for the production and purification of glycolic acid or glycolic acid derivatives by the carbonylation of methylene dipropionate in the presence of a solid acid catalyst and propionic acid. This invention discloses hydrocarboxylations and corresponding glycolic acid separations wherein the propionic acid stream is readily removed from the glycolic acid and the propionic acid is recycled. | 10-03-2013 |
| 20140163258 | THERMO-REVERSIBLE PHASE SELECTIVE XEROGEL COMPOSITIONS - Described herein are xerogels consisting essentially of 12-hydroxy-stearic acid (12-HSA) wherein the xerogel is characterized by a spherulitic fibrillar network structure. Also provided is a method for adsorbing an apolar liquid by contacting a 12-HSA xerogel composition with the apolar liquid. | 06-12-2014 |
| 20150057465 | CONTROL OF GROWTH-INDUCTION-PRODUCTION PHASES - The present invention provides various combinations of genetic modifications to a transformed host cell that provide increase conversion of carbon to a chemical product. The present invention also provides methods of fermentation and methods of making various chemical products. | 02-26-2015 |
| 20150105584 | Bio-Based Acrylic Acid And Its Derivatives - Lactic acid, lactic acid derivatives, or mixtures thereof are dehydrated using a catalyst and process to produce bio-acrylic acid, acrylic acid derivatives, or mixtures thereof. A method to produce the catalyst is also provided. | 04-16-2015 |
| 20150119601 | MONOFUNCTIONAL MCR + 3-HP DEHYDROGENASE - The present invention provides various combinations of genetic modifications to a transformed host cell that provide increase conversion of carbon to a chemical product. The present invention also provides methods of fermentation and methods of making various chemical products. | 04-30-2015 |
| 20160031785 | THERMAL SALT-SPLITTING OF (ALKYL)AMMONIUM 3-HYDROXYPROPIONATE - A salt-splitting liquid (SSL) and a process that uses the SSL to “split” (alkyl)ammonium 3-hydroxypropionate salts into ammonia (or amines) and 3-hydroxypropionic acid (3-HP) that minimizes increases in viscosity and condensation reactions of the 3-HP. Converting (alkyl)ammonium 3-hydroxypropionate in an aqueous mixture to 3-HP includes admixing a polar aprotic organic solvent and an azeotroping solvent with the aqueous mixture. The azeotroping solvent forms an azeotrope mixture with water of the aqueous mixture. The SSL is heated to convert the (alkyl)ammonium 3-hydroxypropionate to 3-HP and ammonia, where heating produces a vapor phase containing at least water, ammonia and the azeotroping solvent. At least a portion of the water and the ammonia is removed from the vapor phase during the heating, and at least a portion of the azeotroping solvent is returned from the vapor phase back to SSL to maintain the azeotrope mixture with the water. | 02-04-2016 |
| 562580000 | Purification or recovery per se | 20 |
| 20090105501 | METHOD FOR PRODUCING LACTIC ACID ESTER - This invention provides a method for producing a lactic acid ester that can minimize input energy at the time of production, that can reduce chemical costs, and that can minimize equipment costs. This method comprises steps of: performing an esterification reaction in a reaction solution containing ammonium lactate obtained via fermentation and alcohol with an ammonia concentration of 1.0% by weight or lower; and recovering the lactic acid ester synthesized in the above step. | 04-23-2009 |
| 20100094049 | PROCESS FOR PRODUCING 2-HYDROXY-4-METHYLTHIOBUTANOIC ACID - A method is provided of using a suitable material for an apparatus used in solid-liquid separation of a residue containing an inorganic salt, left to remain in an organic phase containing 2-hydroxy-4-methylthiobutanoic acid, the material being an alloy containing 21.0 to 30.0% by weight of a Cr element, 2.5 to 11.0% by weight of a Ni element, 1.0 to 5.0% by weight of a Mo element and a Fe element as the rest. | 04-15-2010 |
| 20110124915 | PROCESS FOR PREPARING FLUOROCARBOXYLIC ACID - A process for preparing a fluorocarboxylic acid, which includes a dehydration step of removing from a mixture containing a fluorocarboxylic acid and water at least a part of the water to obtain a dehydrated fluorocarboxylic acid solution, and a purification step of purifying the dehydrated fluorocarboxylic acid solution. | 05-26-2011 |
| 20110319660 | METHOD OF PURIFYING LACTIC ACID BY CRYSTALLIZATION - Method for purifying lactic acid by crystallisation in one or a plurality of steps, characterised in that crystals are formed from an impure aqueous lactic acid solution having a colour of >500 Hazen, at a concentration between 85 and 95% by controlling the lactic acid oligomer content expressed in terms of a relative monomer content greater than 80% and controlling the degree of supersaturation of the solution between 1 and 60% in order to obtain lactic acid crystals having a specific surface area by mass of <0.05 m | 12-29-2011 |
| 20120029231 | METHODS FOR REMOVING VICINAL DIOLS FROM LACTIC ACID FERMENTATION BROTH - Embodiments of a method for removing vicinal diols from a lactic acid fermentation broth comprise the steps of contacting the lactic acid fermentation broth with functionalized silica comprising at least one hydrophobic ligand to facilitate binding of the vicinal diols to the hydrophobic ligand, and separating the contacted lactic acid fermentation broth from the functionalized silica to remove the vicinal diols. | 02-02-2012 |
| 20120029232 | METHOD FOR ADSORBING FLUOROCARBOXYLIC ACID HAVING ETHER BOND AND METHOD FOR COLLECTING SAME - Disclosed are an adsorption process whereby a fluorocarboxylic acid having an ether bond can be adsorbed to a high extent by using active carbon without changing the form thereof, and a desorption process whereby the adsorbed material can be desorbed from the active carbon to thereby enable the reuse of the active carbon and the adsorbed material. In the aforesaid processes, a solution containing a fluorocarboxylic acid having an ether bond is contacted with active carbon and thus the active carbon is allowed to adsorb the fluorocarboxylic acid, to thereby give a solution having a small fluorocarboxylic acid content. Then, the active carbon having adsorbed the fluorocarboxylic acid is heated to thereby desorbs the fluorocarboxylic acid from the active carbon. | 02-02-2012 |
| 20120203032 | PROCESS FOR PRODUCING AND PURIFYING A CONCENTRATED LACTIC SALT - The present disclosure relates to a process for preparing a lactic salt from a lactide starting material. In particular, the present disclosure is directed to the production of potassium lactate, wherein the potassium lactate has a desirable neutral odor and a concentration greater than 75%, and wherein the potassium lactate possesses desirable properties for food applications. | 08-09-2012 |
| 20120271065 | METHOD FOR RECOVERING ANIONIC FLUORINATED EMULSIFIER - To provide a method for recovering an anionic fluorinated emulsifier, capable of easily and efficiently recovering an anionic fluorinated emulsifier adsorbed on a basic ion exchange resin. | 10-25-2012 |
| 20120289742 | PURIFICATION OF SUCCINIC ACID FROM THE FERMENTATION BROTH CONTAINING AMMONIUM SUCCINATE - This present invention relates to the processes for the purification of succinic acid from a fermentation broth containing ammonium succinate. The process for the purification of succinic acid described in this invention involves the use of ion exchange resins for splitting the ammonium succinate in the fermentation broth. During the passage of the fermentation broth through a cationic ion exchange resin, the ammonium succinate is split into ammonium cation and the succinate anion. The proton on the resin surface is exchanged for the ammonium ions and the succinate anion is reduced to succinic acid with the protons released from the ion exchange resin. The bound ammonium is released from the resin with the addition of a strong acid such as sulfuric acid and thereby the ion exchange resin is regenerated for subsequent use. The ammonium sulfate by-product resulting from the regeneration step of this process can be used as a source of fertilizer. This process for the separation of succinic acid from the fermentation broth containing ammonium succinate can also be carried out with an anionic ion exchange resin wherein the succinate anion is retained on the surface of the ion exchange resin and subsequently released from the ion exchange resin during the regeneration step. | 11-15-2012 |
| 20130245320 | METHOD FOR OBTAINING LACTIC ACID WITH A HIGH DEGREE OF PURITY FROM FERMENTATIVE LIQUOR - The present invention describes a process for obtaining lactic acid with a high degree of purity from a fermentative liquor ( | 09-19-2013 |
| 20140012041 | METHOD FOR PRODUCING LACTATE - A method produces a lactic acid salt and includes subjecting an aqueous lactic acid salt solution comprising a formic acid salt in an amount of not less than 7.0% by weight with respect to the lactic acid salt to crystallization, and recovering the lactic acid salt. By subjecting the aqueous lactic acid salt solution including a formic acid salt in an amount of not less than 7.0% by weight with respect to the lactic acid salt to crystallization, supersaturation of the lactic acid salt can be stabilized, and the recovery of the lactic acid salt can be increased. | 01-09-2014 |
| 20140187816 | METHOD FOR RECOVERING ANIONIC FLUORINATED EMULSIFIER - To provide a method for recovering an anionic fluorinated emulsifier, whereby an anionic fluorinated emulsifier adsorbed on a basic ion exchange resin can be simply and efficiently recovered. A mixed liquid of an aqueous inorganic acid solution, a fluorinated medium and a non-fluorinated medium, is contacted to a basic ion exchange resin having an anionic fluorinated emulsifier adsorbed thereon, to recover a liquid phase containing the fluorinated medium, or an aqueous inorganic acid solution is contacted to a basic ion exchange resin having an anionic fluorinated emulsifier adsorbed thereon, then a mixed liquid of a fluorinated medium and a non-fluorinated medium is contacted thereto, and thereafter the basic ion exchange resin and a liquid phase are separated to recover the liquid phase, whereupon from each liquid phase, an acid of the anionic fluorinated emulsifier is recovered. | 07-03-2014 |
| 20140371486 | METHOD FOR PURIFYING CARBOXYLIC ACIDS FROM FERMENTATION BROTHS - Disclosed is a method for removing and purifying carboxylic acids from fermentation broths, comprising removing biomass and any solids present from the fermentation broth, finely cleaning up the biomass-free and solids-free fermentation broth by nanofiltration, and removing the carboxylic acid from the finely cleaned, biomass-free, and solids free fermentation broth by adsorption to one or more solid phases having tertiary amino groups. | 12-18-2014 |
| 20150094491 | CARBOXYLIC ACID RECOVERY FROM MAGNESIUM CARBOXYLATE MIXTURE - The invention is directed to a method for recovering carboyxlic acid from an magnesium carboxylate containing aqueous mixture, including the steps of: contacting the aqueous mixture with an acidic ion exchanger, thereby forming a carboxylic acid mixture and an ion exchanger loaded with magnesium ions; contacting the ion exchanger loaded with magnesium ions with a hydrochloric acid solution, thereby forming a magnesium chloride solution; and thermally decomposing the magnesium chloride solution at a temperature of at least 300° C., thereby forming magnesium oxide (MgO) and hydrogen chloride (HCl). | 04-02-2015 |
| 20150307434 | METHOD FOR RECOVERING ANIONIC FLUORINATED EMULSIFIER - To provide a method for recovering an anionic fluorinated emulsifier, whereby an anionic fluorinated emulsifier adsorbed on a basic ion exchange resin can be simply and efficiently recovered. | 10-29-2015 |
| 20160046555 | METHOD OF TRANSFORMING BIOMASS INTO LACTIC ACID WITH MODIFIED BETA ZEOLITES - A method of transforming biomass into lactic acid using modified beta zeolites is disclosed. The one-step preparation process of preparing catalyst in the invention is mild, economical and convenient. The biomass used as precursor is economic and easy to get. Meanwhile, the reaction process doesn't need to be protected by noble gases with high pressure. The catalyst can be reused and the yield of lactic acid is high. | 02-18-2016 |
| 20160052856 | Beta-HYDROXY-Beta-METHYLBUTYRIC ACID PURIFICATION METHOD - The present invention relates to a method for purifying β-hydroxyl-β-methyl butyrate, comprising neutralizing a crude β-hydroxyl-β-methyl butyrate with a base to produce a salt of β-hydroxyl-β-methyl butyrate, cooling and crystallizing, dissolving and acidifying, and extracting to obtain β-hydroxyl-β-methyl butyrate of high purity. No strict conditions, such as high temperature and high vacuum, are required in this method. On the contrary, it has low requirement on the apparatus, the process can readily be controlled and a product with high purity can be produced. | 02-25-2016 |
| 20160090346 | PREPARATION AND SEPARATION OF A DI-CARBOXYLIC ACID-CONTAINING MIXTURE - Processes for separating a di-carboxylic acid or salt thereof from a mixture containing the di-carboxylic acid or salt thereof and one or more other components are provided. Also separation media useful for these separation processes is provided. In particular, processes for preparing an aldaric acid are described, such as glucaric acid from glucose, which includes separating the aldaric acid from the reaction product. Also, various glucaric acid products are described. | 03-31-2016 |
| 20160096797 | METHOD OF SEPARATING LACTIC ACID OR SALT THEREOF - Provided is a method of separating lactic acid or a salt thereof. The method includes removing a coloring material, including hydroxymethylfurfural (HMF), from a fermentation broth, which includes at least one of lactic acid and a salt thereof; and recovering lactic acid or a salt thereof from the fermentation broth, from which the coloring material has been removed. | 04-07-2016 |
| 20160159723 | PURIFICATION OF LONG CHAIN DIACIDS - The present disclosure relates to methods for separating and purifying a long chain diacid from other long chain diacids, monocarboxylic acids, hydroxyl acids or alkanes by simulated or actual moving bed chromatography. | 06-09-2016 |
| 562581000 | Sulfur | 4 |
| 20100094050 | PROCESS FOR PRODUCING 2-HYDROXY-4-METHYLTHIOBUTANOIC ACID - A method is provided of using a highly impact-resistant and corrosion-resistant alloy material for an apparatus for use in hydration of 2-hydroxy-4-methylthiobutanenitrile to obtain 2-hydroxy-4-methylthiobutanamide, the material being readily fabricated for an apparatus with a complicated structure and being composed of an alloy which contains 16.0 to 22.0% by weight of a Cr element, 16.0 to 22.0% by weight of a Mo element, 1.0 to 2.5% by weight of a Ta element and a Ni element as the rest, or an alloy which contains 26.0 to 32.0% by weight of a Mo element and a Ni element as the rest. | 04-15-2010 |
| 20100298603 | PROCESS FOR PRODUCING 2-HYDROXY-4-METHYLTHIOBUTANEAMIDE - Provided is a process for producing an amide (A): by hydrating a nitrile (B) at high conversion in relatively short period of time even without use of high-capacity cooling apparatuses ( | 11-25-2010 |
| 20130172617 | METHOD FOR PREPARING A COMPLEX OF AN ACID AND A METAL - The invention concerns a method for preparing a complex of an acid chosen from among methionine, 2-hydroxy-4-methylthiobutanoic acid (HMTBA) and lactic acid, and of at least one metal, starting from said acid and a mineral metal source, wherein the acid is caused to react with the mineral metal source in an extruder. | 07-04-2013 |
| 20130274510 | SYNTHESIS OF POLYHYDROXYALKANOATES (PHA) WITH THIOESTER GROUPS IN THE SIDE CHAIN - The present invention relates to a process for the synthesis of polyhydroxyalkanoates (PHAs) and PHAs obtained by the said process and the use of the said PHAs. The PHAs of the present invention, called PHACOS, have a novel monomeric composition, as they contain monomers with thioester groups in the side chain that confer new physicochemical properties and allow subsequent chemical modification. | 10-17-2013 |
| 562582000 | Polycarboxylic | 5 |
| 20130274511 | Guerbet Alcohols and Methods for Preparing and Using Same - The invention relates to Guerbet alcohol precursors and Guerbet alcohols, as well as to processes for synthesizing them. | 10-17-2013 |
| 562583000 | Ether | 1 |
| 20140012042 | Calcium Dicarboxylate Ethers - The invention is a pharmaceutical composition comprising a carboxyalkylether which lowers triglycerides and elevated HDL, and a statin which inhibits HMG-CoA reductase, thereby reducing LDL, said composition being useful for treating vascular diseases. | 01-09-2014 |
| 562584000 | Citric acid per se or salt thereof | 2 |
| 20100152488 | High Purity (-) Hydroxycitric Acid Metal Salt Derivatives and Method of Preparation of the Same - The present invention relates to high purity (−) Hydroxycitric acid metal salt derivatives of more than 98% purity having formula II (a-e), lla; X, 2X═Na Mb; X, 2X═K Hc; X═K, Y═Ca Hd1 X═Na, Y═Ca He; X=½Mg, Y═Mg and the method of preparation of high purity (−) hydroxycitric acid metal salt derivatives from (−) hydroxycitric acid lactone having formula (1) which in turn is isolated in a simple and efficient manner from dried rinds of the fruits of | 06-17-2010 |
| 20130324762 | PROCESS FOR PREPARING SURFACE-REACTED CALCIUM CARBONATE AND ITS USE - The present invention relates to an economic process for preparing surface-reacted calcium carbonate. The present invention further relates to a surface-reacted calcium carbonate having an increased specific BET surface area, and the use of a process for adjusting the specific BET surface area. | 12-05-2013 |
| 562585000 | Tartaric acid per se or salt thereof | 1 |
| 20120130124 | PROCESS FOR THE PREPARATION OF A COMPOSITION COMPRISING MESO-TARTARIC ACID - The present invention relates to a process for the preparation of a composition comprising tartaric acid wherein between 55 and 90% by weight of the tartaric acid is meso-tartaric acid, comprising the steps of (i) preparing an aqueous mixture comprising between 35 and 65% by weight of a di-alkali metal salt of L-tartaric acid, a di-alkali metal salt of D-tartaric acid, a mixture of di-alkali metal salts of L-tartaric acid, D-tartaric acid, and optionally meso-tartaric acid, and between 2 and 15% by weight of an alkali metal or alkaline metal hydroxide, and (ii) stirring and heating the aqueous mixture to a temperature of between 100° C. and its boiling point until between 55 and 90% by weight of tartaric acid has been converted to meso-tartaric acid. | 05-24-2012 |
| 562586000 | Halogen | 3 |
| 20090156861 | NOVEL CARBOXYLIC ACID COMPOUND, USE THEREOF, AND PROCESS FOR PRODUCING THE SAME - The present invention provides a process for producing 1,1,1,3,3,3-hexafluoro-2-methoxypropane, wherein a novel compound, 2-methoxy-2-trifluoromethyl-3,3,3-trifluoropropionic acid or a salt thereof is decarboxylated, or wherein an olefin compound represented by chemical formula (4): CF | 06-18-2009 |
| 20100197963 | FLUORINATED OXY-CARBOXYLIC ACIDS, DERIVATIVES, AND METHODS OF PREPARATION - Provided are fluorinated oxy-carboxylic acids, derivatives of oxy-carboxylic acids, and methods of preparing oxy-carboxylic acids and derivatives thereof. | 08-05-2010 |
| 20110213182 | Process for the manufacture of fluorosurfactants - A process for the manufacture of a perfluorooxycarboxylate of formula (I): R | 09-01-2011 |
| 562587000 | Polyoxy | 1 |
| 20120209027 | Method for Preparing Water-Soluble Polymer Derivatives Bearing a Terminal Carboxylic Acid - A method is provided for preparing water-soluble polymer derivatives bearing a terminal carboxylic acid or ester thereof. The method involves the hydrolyzing an ortho ester of a water-soluble polymer so as provide the corresponding acid. In addition, the invention provides water-soluble polymers bearing a terminal carboxylic acid or ester thereof, intermediates and reagents useful in carrying out the method, as well as gels, pharmaceutical formulations, conjugates related to the described water-soluble polymer derivatives. | 08-16-2012 |
| 562589000 | Lactic acid per se or salt thereof | 11 |
| 20090088589 | PROCESS FOR PRODUCTION OF LACTIC ACID AND EQUIPMENT FOR THE PRODUCTION - A process for producing lactic acid according to the invention is characterized in that glycerin is subjected to a hydrothermal reaction under an alkaline condition at a temperature in the range of 150 to 400° C. and under pressure equal to or more than the saturated vapor pressure at the temperature. The glycerin produced from plant fats, animal fats or the like or pure product synthesized chemically or a discharge containing glycerin generated at the production of diesel fuel oil from fats, in which the fats are subjected to a transesterification with alcohol in the presence of an alkali catalyst in order to obtain fatty acid ester is preferably used as a starting material. | 04-02-2009 |
| 20090203937 | PROCESS FOR PREPARING L- (+) -LACTIC ACID - The present invention provides a commercially viable process for the preparation of highly pure and optically active L-(+)-lactic acid and S-(−)-methyl lactate, in high yield, obtained from esterification of aqueous crude lactic acid solution produced by sugar cane juice fermentation broth and methanol in continuous counter current trickle phase approach or in continuous counter current bubble column manner, using stabilizers and the methyl lactate so obtained is recovered and followed by purification of reasonably pure methyl lactate using reagent mixture such as sodium bi-carbonate, mono-ethanolamine or di-ethanolamine, urea or sodium-bicarbonate, mono-ethanolamine or di-ethanolamine, thiourea to reduce the impurity of dimethyl ester of dicarboxylic such as dimethyl oxalate or di-methyl succinate or methyl ester of mono-carboxylic acid such as methyl pyruvate present as an impurity, so as to get highly pure S-(−)-methyl lactate followed by hydrolyzing highly pure S-(−)-methyl lactate using highly pure lactic acid as a catalyst, using highly pure water as the hydrolysis media and by using pre-treated activated carbon with dilute L-(+)-lactic acid, in batch or continuous mode. This very high pure S-(−)-methyl lactate constitutes an important product having interesting possibilities of application at an industrial level, in pharmaceuticals. Highly pure L-(+)-lactic acid thus obtained is used as an acidulant, as a food additive, for pharmaceutical applications, a monomer for making poly-lactic acid, as a monomer to prepare biodegradable polymer which are useful for manufacturing bags, application films, in the field of sanitary field, and has medical applications. | 08-13-2009 |
| 20120165568 | LIQUID LACTIC ACID COMPOSITION AND METHOD FOR PREPARATION THEREOF - A method of preparing a liquid lactic acid composition that has a total acid content of at least 94% (w/w) and that does not crystallise at a temperature above 10° C. includes obtaining a starting liquid lactic acid composition that has a total acid content of at least 94% (w/w) and that crystallises at a temperature above 10° C. and incubating said starting liquid lactic acid composition at a temperature above the crystallisation point of the starting liquid lactic acid composition for a time period to obtain the liquid lactic acid composition that does not crystallise at a temperature above 10° C. | 06-28-2012 |
| 20120190891 | SYSTEMS AND METHODS FOR PROCESSING LIPID FEEDSTOCKS - Embodiments of the invention include processing lipid feedstocks into various products. In an embodiment, the invention includes a method of processing a lipid feedstock including combining the lipid feedstock with water to form a reaction mixture; and contacting the reaction mixture with a catalyst, the catalyst including a metal oxide. Methods can be used to form polyols, diols, and carboxylic acids, amongst others. Other embodiments are also included herein. | 07-26-2012 |
| 20130053601 | PROCESS FOR TRANSFORMATION OF LIGNOCELLULOSIC BIOMASS OR CELLULOSE BY TUNGSTEN-BASED SOLID LEWIS ACIDS - The invention relates to a process for transformation of lignocellulosic biomass or cellulose that uses tungsten-based heterogeneous catalysts that are dispersed on an oxide-based substrate, preferably with a base of oxide(s) of aluminum and/or zirconium and/or titanium and/or niobium. The use of these catalysts makes it possible to obtain directly lactic acid with high selectivity while limiting the production of oligosaccharides and soluble polymers. | 02-28-2013 |
| 20130096342 | DEPOLYMERIZATION OF POLYLACTIC ACID - The invention provides energy efficient depolymerization of polyesters such as post-consumer polylactic acid. Ultrasonic induced implosions can be used to facilitate the depolymerization. The expanding market of polylactic acid-based plastic products, such as water bottles and packaging materials, has raised concerns of contaminating the recycling stream, which is largely filled with petroleum-based plastics. Thus the development of an energy efficient and economically viable PLA recycling process is urgently needed. Post consumer PLA was exposed to methanol as the suspension media in the presence of organic or ionic salts of alkali metals such a potassium carbonate and sodium hydroxide as depolymerization catalysts to provide high quality lactic acid monomers in high yield. | 04-18-2013 |
| 20140012043 | METHOD FOR REMOVAL OF THE CYCLIC DIESTER OF A 2-HYDROXY ALKANOIC ACID FROM A VAPOR - The invention relates to a method for the removal of the cyclic diester of a 2-hydroxy alkanoic acid from a vapor containing said diester, wherein the vapor is contacted with an aqueous solution so that the diester dissolves in said solution. According to the invention, the method is characterized in that the solution is an alkaline solution, preferably having a pH above 10. The problem of the formation of slurries of the diester in the aqueous solutions can be prevented by the present invention. The method can be applied with great advantage in the production or conversion of lactide. | 01-09-2014 |
| 20140128635 | TRANSFORMANT FOR PRODUCTION OF LACTIC ACID OF HIGH OPTICAL PURITY AND METHOD FOR PRODUCING LACTIC ACID USING THE SAME - Disclosed is the biological production of lactic acid using a microorganism. A transformant capable of producing lactic acid of high optical purity at high yield, a method for the preparation thereof, and a method for producing lactic acid in a convenient and economically beneficial manner using the same are provided. The | 05-08-2014 |
| 20140316162 | CLEAN SUGAR AND LIGNIN FROM NON-CHEMICALLY PRETREATED LIGNOCELLULOSIC BIOMASS - Methods of producing clean (e.g., low sulfur and metal ion content, and free of fermentation inhibitors) sugar and lignin-rich streams, and downstream conversion products, from lignocellulosic biomass, may include obtaining non-chemically pretreated, milled lignocellulosic biomass, reacting the milled lignocellulosic biomass with an enzymatic agent to produce a slurry that includes converted monomeric lignocellulosic sugars and lignin-rich residuals, and separating the slurry into a sugar stream that includes the converted monomeric lignocellulosic sugars and a lignin-rich stream that includes the lignin-rich residuals. The sugar stream, not including water, includes at least 75% monomeric lignocellulosic sugar, less than 0.20% sulfur, and less than 3.0% metal ion content, and the lignin-rich stream includes at least 35% lignin and less than 0.50% sulfur. Some methods include producing fermentation products such as alcohols and/or organic acids from the sugar stream, and/or use of the lignin residuals in fuels. | 10-23-2014 |
| 20150299082 | METHODS, SYSTEMS AND DEVICES FOR SIMULTANEOUS PRODUCTION OF LACTIC ACID AND PROPYLENE GLYCOL FROM GLYCEROL - Methods, processes and systems for using solid catalysts to simultaneously produce lactic acid and propylene glycol from glycerol are provide, as are methods, processes and systems of converting glycerol use heterogeneous catalytic agents. Different combinations of catalysts and reaction conditions provide tunable ranges for the yields of lactic acid and propylene glycol. The conversion methods, processes and systems are not reliant on external hydrogen. Applications to crude glycerol, including that co-produced during biodiesel production, are also described. | 10-22-2015 |
| 20160076062 | PROCESSING BIOMASS TO OBTAIN HYDROXYLCARBOXYLIC ACIDS - Biomass (e.g., plant biomass, animal biomass, and municipal waste biomass) is processed to produce useful intermediates and products, such as hydroxy-carboxylic acids and hydroxy-carboxylic acid derivatives. A method includes treating a reduced recalcitrance lignocellulosic or cellulosic material with one or more enzymes and/or organisms (such as | 03-17-2016 |
