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9012682 Process for converting cellulose or lignocellulosic biomass using stable non-zeolite solid Lewis acids based on tin or antimony alone or as a mixture  
The invention relates to a process for transformation of lignocellulosic biomass or cellulose using stable non-zeolitic heterogeneous catalysts that are based on tin and/or antimony, preferably...
9012685 Recovery method of highly pure lactic acid and alkyl lactate  
A method for recovery of highly pure alkyl lactate and lactic acid is provided, which includes a step 1 for producing source liquid comprising lactic acid or ammonium lactate; a step 2 for...
8987510 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...
8940934 Production process of α-hydroxy acids  
An object of the present invention is to provide a production process of an α-hydroxy acid having a sufficient quality as a polymer raw material, which process does not produce a large amount of...
8895778 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...
8759045 Lactic acid production method  
A method of producing lactic acid by separating lactic acid produced in a culture solution by microbial fermentation, comprising: a step (A) of filtering the culture solution through a...
8680146 Organic compounds  
The present invention relates to salts, polymorphs and hydrates of 2-Amino-2-[2-(4-C2-20-alkyl-phenyl)ethyl]propane-1,3-diol, and to the use thereof, in particular in the treatment or prevention...
8664436 Process for the separation of organic acids and amino acids from fermentation broths  
The present invention relates to a solid bed adsorptive separation of organic acid and/or amino acids from fermentation broths containing organic acid and/or amino acid.
8664435 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 crystallize at a temperature above 10° C. includes obtaining a starting...
8624058 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,...
8519185 Process for producing glycolic acid  
Glycolic acid having a high purity is obtained by subjecting glycolic acid or a glycolic acid solution containing contaminants to double-chamber electrodialysis combined with one or more...
8481675 Chemical recycling of PLA by alcoholysis  
A process for recycling a polymer blend necessarily containing PLA, comprising grinding, compacting, dissolving in a solvent of PLA, removing the undissolved contamining polymers, alcoholysis...
8471062 Method of purifying lactic acid by crystallization  
Method for purifying lactic acid by crystallization in one or a plurality of steps, characterized in that crystals are formed from an impure aqueous lactic acid solution having a color of >500...
8431677 Purification of a conventional polymer flow contaminated with PLA  
Method for purifying a conventional polymer stream (PE, PP, PET, PVC, etc.) contaminated with not more than 50% PLA, comprising steps for the suspension of the polymer with solubilisation of the...
8349597 Lactic acid production method  
A method of producing lactic acid by separating lactic acid produced in a culture solution by microbial fermentation, comprising: a step (A) of filtering the culture solution through a...
8293940 Process 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...
8192589 Purification of aqueous solutions of organic acids  
The invention relates to a method and a device for the purification of an aqueous solution of an organic acid having a boiling point at atmospheric pressure of less than 450° C., which further has...
8143439 Zeolite-catalyzed preparation of alpha-hydroxy carboxylic acids and esters thereof  
A process for the production of lactic acid and 2-hydroxy-3-butenoic acid or esters thereof by conversion of glucose, fructose, sucrose, xylose and glycolaldehyde dissolved in a solvent in...
8048655 Recovery of organic acids  
A method is disclosed for the recovery of an organic acid from a dilute salt solution in which the cation of the salt forms an insoluble carbonate salt. A tertiary amine and CO2 are introduced to...
7985778 Method for decomposing and reclaiming synthetic resin having ester bond in the composition structure  
Synthetic resin containing ester bond is subjected to hydrolysis treatment to reclaim raw material component before polymerization. Method for decomposing and reclaiming synthetic resin having...
7867736 Method for preparing an organic amine—lactic acid complex  
The invention relates to a method for preparing a complex of an organic amine and lactic acid in a reactor, characterized in that a water-miscible organic amine is brought into contact with...
7829740 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...
7795189 Zirconium-hydroxy alkylated amine-hydroxy carboxylic acid cross-linking composition for use with high pH polymer solutions  
A process to prepare a solution of zirconium-hydroxyalkylated diamine-lactic acid complex is disclosed and use of the solution in oil field applications such as hydraulic fracturing and plugging...
7772419 Carbonylation of ester  
A vinyl ester alkoxycarbonylation process comprising reacting a vinyl ester with carbon monoxide in the presence of an alkanol and a catalyst system. The catalyst system used is obtainable by...
7754660 Process to prepare zirconium-based cross-linker compositions and their use in oil field applications  
A process to prepare a solution of zirconium-alkanolamine-hydroxycarboxylic acid complex is disclosed and use of the solution in oil field applications such as hydraulic fracturing and plugging of...
7736514 Method for extracting lactic acid from aqueous suspensions  
The invention relates to a method for the continuous extraction of lactic acid from an aqueous suspension containing solids. According to said method, the aqueous suspension containing solids is...
7723540 Method and apparatus for producing polyhydroxy carboxylic acid  
The object is to provide a method and apparatus for producing a polyhydroxy carboxylic acid according to which an annular dimer can be efficiently obtained in the production of polyhydroxy...
7705180 Process for the preparation of lactic acid or lactate from a magnesium lactate comprising medium  
The present invention relates to an improved process for the preparation of lactic acid and or lactate from a magnesium lactate comprising medium. In said process, magnesium lactate is reacted...
7678365 Disinfecting oral rinse compositions and process for using the same  
This invention relates generally to compositions and methods useful for oral hygiene rinses, and more specifically to oral rinses in which the antimicrobial activity of chlorous acid is...
7550541 Resin composition and molded article, film and fiber each comprising the same  
Disclosed are a resin composition comprising a polylactic acid resin and a polyacetal resin, and such a resin composition in which the polylactic acid resin and the polyacetal resin are kept...
7332085 Method for the purification of an α-hydroxy acid on an industrial scale  
The present invention relates to a method for the purification of an α-hydroxy acid on an industrial scale, in which the method involves: (a) subjecting an aqueous stream containing mainly...
7238837 Process for the recovery of lactic acid from aqueous lactate salt solutions, involving the use of ion exchangers  
The invention provides a process for the recovery of lactic acid from aqueous solutions containing at least one water-soluble lactate salt and having a pH of about between 4 and 14, comprising the...
7223885 Method for the purification of a-hydroxy acids on an industrial scale  
The present invention relates to a method for the purification of an α-hydroxy acid on an industrial scale, in which an α-hydroxy acid with a color (fresh) of not more than 10,000 APHA units is...
7211693 Preparation of lactic acid derivatives and their use  
The present invention relates to preparing lactic acid derivatives that are useful as odorants and monomers for polymer synthesis.
7186856 Process for preparing carboxylic acids and derivatives thereof  
Processes for preparing carboxylic acids and derivatives thereof in which an ammonium salt of the carboxylic acid is heated in the presence of an organic reagent to split the salt and form the...
7154000 Methods of using polylactate release compounds  
The preferred embodiments provide for a family of novel compositions to serve as substrates that release hydroxy acid slowly over time. Preferably the hydroxy acid is an α-hydroxy acid, more...
7144977 Lactic acid processing; methods; arrangements; and, products  
The techniques for processing lactic acid/lactate salt mixtures are provided. Preferred mixtures for processing are obtained from fermentation broths, preferably from fermentation processes...
7026145 Process for producing a purified lactic acid solution  
The present disclosure provides a process for preparing a purified lactic acid solution suitable for use in connection with a source of lactate material a pH within the range of 0.8 to 9.0. The...
7019170 Process for the recovery of lactic acid by contacting aqueous solutions containing the same with a basic organic extractant  
The invention provides a process for the recovery of lactic acid and products thereof from an aqueous solution containing free lactic acid and at least one lactate salt at a total concentration of...
7001625 Solid phase synthesis of salts of organic acids including butyric acid  
A process for the solid-phase synthesis of salts of organic acids in a granular, free-flowing, and dust-free form particularly suited for use as animal feed additives. A mixture of liquid organic...
6984293 Azeotropic distillation of cyclic esters of hydroxy organic acids  
Cyclic esters of hydroxy organic acids can be produced and recovered via azeotropic distillation. In certain embodiments cyclic esters, such as glycolide and lactide, can be produced from a...
6982026 Azeotropic distillation process for producing organic acids or organic acid amides  
Disclosed herein are methods for the recovery of at least one of an organic acid or an organic acid amide, such as a heat stable lactic acid or lactamide, from a feed stream which contains the...
6942803 Process for purifying an organic acid  
A process is disclosed for purifying an aqueous feed stream comprising a product organic acid, such as lactic acid, and a strong contaminant, such as pyruvic acid or oxalic acid. The molar...
6926810 Process for obtaining an organic acid from an organic acid ammonium salt, an organic acid amide, or an alkylamine organic acid complex  
Disclosed herein are methods for the recovery of an organic acid, such as a heat stable lactic acid, from a feed stream which contains at least one of an organic acid amide, an organic acid...
6777213 Isolation of carboxylic acids from fermentation broth  
A process for recovering carboxylic acids from an aqueous mixture such as a fermentation broth using a solvent containing at least one olefin without the need for first removing the spent...
6670505 Process for the recovery of organic acids from aqueous solutions  
A process for recovering a desired organic acid from a solution includes the steps of: providing an aqueous solution including at least one desired organic acid or its acid anion; adjusting the...
6667417 Process for the recovery of lactic acid  
The invention provides a process for producing lactic acid from a medium containing an alkaline earth-metal salt of lactic acid, comprising (a) reacting a conjugated base of an alkali metal from a...
6652820 Methods of making cesium salts and other alkali metal salts  
A method of making a cesium salt is described and involves reacting a cesium sulfate containing solution with lime to form 1) a solution containing at least cesium hydroxide and 2) a residue...
6632966 Method for the preparation of lactic acid and calcium sulphate dihydrate  
The invention relates to a method for the preparation of lactic acid and calcium sulphate, in which (a) an aqueous solution that contains lactate is reacted with sulphuric acid at a temperature...
6630603 Method of industrial-scale purification of lactic acid  
The present invention relates to a method of industrial-scale purification of lactic acid, the method including the steps of: (a) reduced-pressure distillation of a concentrated lactic acid...

Matches 1 - 50 out of 194 1 2 3 4 >