Class 562/515 - Preparation by degradation of carbohydrates

Subclass of Class 562 - Organic compounds -- part of the class 532-570 series
Definition: Processes wherein the acids are produced by degradation
No. of patents: 40
Last issue date: 12/02/2008

Number	Title	Issue Date
7459584	Process for the preparation of lactic acid and glyceric acid Hexose and pentose monosaccharides are degraded to lactic acid and glyceric acid in an aqueous solution in the presence of an excess of a strongly anionic exchange resin, such as AMBERLITE IRN78 and AMBERLITE IRA400. The glyceric acid and lactic acid can be separate...	12/02/2008
7173149	Process for preparing alkynecarboxylic acids by oxidation of alkyne alcohols A process for preparing alkynecarboxylic acids includes the oxidation of an alkyne alcohol with a hypohalite in the presence of a nitroxyl compound at a pH of greater than 7 with continual addition of the alkyne alcohol and of the hypohalite to the reaction mixture....	02/06/2007
7070709	Dust suppressant and soil stabilization composition Disclosed are dust suppressant and aggregate stabilization compositions. In accordance with the subject disclosure, hemicellulose is used as a dust suppressant and/or as a stabilization composition for aggregates such as a road bed or soil field. Other ingredients m...	07/04/2006
7067422	Method of forming a tantalum-containing gate electrode structure A method for forming a tantalum-containing gate electrode structure by providing a substrate having a high-k dielectric layer thereon in a process chamber and forming a tantalum-containing layer on the high-k dielectric layer in a thermal chemical vapor deposition p...	06/27/2006
7048871	Process for producing a deicing/anti-icing fluid In a process for producing a deicing/anti-icing fluid, a byproduct stream is obtained from a process that produces monoalkyl esters of long chain fatty acids. The stream includes water, glycerol, and an alkali-containing compound. The stream is converted to a deicin...	05/23/2006
7030279	Process for transition metal free catalytic aerobic oxidation of alcohols under mild conditions using stable free nitroxyl radicals An alcohol can be oxidized by a process in which a primary or secondary alcohol are reacted with an oxygen-containing gas in the presence of a catalyst composition containing (i) a stable free nitroxyl radical derivative, (ii) a nitrate source, (iii) a bromide sourc...	04/18/2006
6608229	Oxidation of polysaccharides with nitroxyls A simplified process for oxidizing starch and other polysaccharides in an aqueous solution or suspension using hypochlorite in the presence of a catalytic amount of a nitroxyl compound is described. The oxidation is process is bromide-free and is carried ...	08/19/2003
6498269	Method for the oxidation of aldehydes, hemiacetals and primary alcohols A method for the oxidation of substrates comprising treating an aqueous, basic solution of a substrate having an oxidizable functionality using an elemental halogen as terminal oxidant in the presence of an oxoammonium catalyst/halide co-catalyst system. ...	12/24/2002
6465690	Process for the preparation of polyamino succinic acids and derivatives thereof A process for preparing polyamino monosuccinic acids, salts or chelates thereof by (a) reacting a maleic or fumaric acid ester or mixtures thereof with a polyamino compound in a primary alcohol as a solvent, (b) hydrolyzing the product obtained in step (a...	10/15/2002
6384276	Process for the preparation of lactic acid by evaporative crystallisation The invention relates to a process for the preparation of high purity lactic acid from an aqueous solution containing said acid in the form of salt(s), characterised in that the aqueous solution is treated with a strong acid in order to liberate lactic ac...	05/07/2002
6288244	Process for the preparation of 3, 4-dihydroxybutanoic acid and derivatives thereof from substituted pentose sugars A process for the preparation of 3,4-dihydroxybutanoic acid (I) and 3-hydroxy-γ-butyrolactone (V) thereof from a 3-leaving group substituted pentose source is described. In particular, the process relates to the synthesis of (R)-3,4-dihydroxybutanoic aci...	09/11/2001
6288272	Continuous process for preparing optically pure (s)-3,4-dihydroxybutyric acid derivatives The present invention relates to a continuous process for preparing optically pure (S)-3,4-dihydroxybutyric acid derivatives expressed by the following Formula 1 and more particularly, to the continuous process which enables preparing optically pure (S)-3...	09/11/2001
6245940	Method of manufacturing an acid derivative of ose by decarboxylation with hydrogen peroxide The invention relates to a method of manufacturing an acid derivative of ose containing n carbon atoms on the carbonic chain, characterised by the fact that an acid derivative of ose with n+1 carbon atoms containing at least one ଱ ketone function, a...	06/12/2001
6239311	Process for the preparation of 3,4-dihydroxybutanoic acid and salts and lactones derived therefrom An improved process for the preparation of 3,4-dihydroxybutanoic acid (1) and salts thereof from a D- or L-hexose source is described. The process uses an alkali metal or alkaline earth metal hydroxide and peroxide oxidizing agent to convert the D- or L-h...	05/29/2001
6235930	Process for the preparation of 3,4-dihydroxybutanoic acid and derivatives thereof from substituted pentose sugars A process for the preparation of 3,4-dihydroxybutanoic acid (I) and 3-hydroxy-γ-butyrolactone (V) thereof from a 3-leaving group substituted pentose source is described. In particular, the process relates to the synthesis of (R)-3,4-dihydroxybutanoic aci...	05/22/2001
6204396	Method for producing calcium fulvate from humus material A method produces calcium fulvate from naturally-occurring humus material, such as leonardite, or humic shales. The humus material containing solid fulvic acid and solid humic acid is mixed with water and sodium hydroxide for a first selected period of ti...	03/20/2001
6147229	Method for producing magnesium fulvate from humus material A method produces magnesium fulvate from naturally-occurring humus material, such as leonardite, or humic shales. The humus material containing solid fulvic acid and solid humic acid is mixed with water and sodium hydroxide for a first selected period of ...	11/14/2000
6054611	Method for the production of levulinic acid and its derivatives A method of producing dehydration products from one more 5-carbon or 6-carbon sugars includes reacting said one or more sugars at 40-240° C. for 1 to 96 hours in the presence of 5-90% sulfuric acid, separating the reaction products, and recovering levuli...	04/25/2000
5892107	Method for the production of levulinic acid A method of producing dehydration products from one or more 5-carbon or 6-carbon sugars includes reacting said one or more sugars at 40°-240 ° C. for 1 to 96 hours in the presence of 10-90% sulfuric acid, separating the reaction products, and recovering...	04/06/1999
5608105	Production of levulinic acid from carbohydrate-containing materials A continuous process for producing levulinic acid from carbohydrate-containing materials in high yields is described. According to the process, a carbohydrate-containing material is supplied continuously to a first reactor and hydrolyzed at between 210° ...	03/04/1997
5374773	Process for the preparation of 3,4-dihydroxybutanoic acid and salts thereof A process for the preparation of 3,4-dihydroxybutanoic acid (1) and salts thereof from a glucose source containing 1,4-1inked glucose as a substituent is described. The process uses an alkali metal hdyroxide and hydrogen peroxide to convert the glucose so...	12/20/1994
5292939	Process for the preparation of 3,4-dihydroxybutanoic acid and salts thereof A process for the preparation of 3,4-dihydroxybutanoic acid (1) and salts thereof from a glucose source containing 1,4-linked glucose as a substituent is described. The process uses an alkali metal hdyroxide and hydrogen peroxide to convert the glucose so...	03/08/1994
5264623	Method of producing calcium salts from biomass Calcium salts, such as calcium acetate, calcium formate or calcium proprionate, are obtained from aqueous liquors derived from the pyrolysis of lignocellulosic biomass containing cellulose, hemicelluloses or starch. The above biomass is subjected to rapid...	11/23/1993
5258557	Process for the preparation of chelatant organic acids This invention relates to a Process for the preparation of Chelatant Organic Acids, from Pentosanes contained in corn husk, wheat seed husk, rice seed husk, oat seed husk, barley seed husk, cotton seed husk, sorgus seed husk, buffel, alfalfa and similar p...	11/02/1993
5258549	Process for preparing carboxylic acids A process for preparing carboxylic acids (e.g. acetic acid) from alcohols (e.g. methanol) by carbonylation is provided. The process employs a catalyst comprising rhodium and nickel supported upon a carbon, preferably a high surface area carbon. The proces...	11/02/1993
5210294	Process for the production of purified lactic acid aqueous solutions starting from fermentation broths Purified lactic acid aqueous solutions obtained by percolating fermentation broths through columns of appropriate ion-exchange resins....	05/11/1993
5024731	Method of manufacturing material for medical and pharmaceutical products from pyroligneous acid A method of manufacturing a material for medical and pharmaceutical products from pyroligneous acid extracted as water content in smoke generated by baking arbor and bark. Pyroligneous acid is heated, and resultant evaporation gas in a temperature range 9...	06/18/1991
4959494	Oxidation of organic compounds with pyrochlore catalysts A method for oxidizing organic compounds by contacting organic compounds with molecular oxygen in the presence of a noble metal pyrochlore having the formula: A2+x B2-x O7-y wherein A is a pyrochlore structure metal cation, and...	09/25/1990
4954620	Thermocondensed lignocellulose material, and a method and an oven for obtaining it This material which has a hemi-cellulose content of less than 2%, a benzopyrene content of less than 2 μg/kg and a calorific value which is about 20% greater than that of the starting material is obtained by isothermal treatment between 220° C. and 280�...	09/04/1990
4897497	Lignocellulose degradation to furfural and levulinic acid A process for producing furfural and levulinic acid from lignocellulose includes subjecting a sample of lignocellulose to acid degradation at an elevated temperature for a minute or less, during which time at least fifty percent of the furfural that theor...	01/30/1990
4885387	Production of high yields of glycolic and oxalic acids from polysaccharide-containing materials High yields of glycolic and oxalic acids, as well as good yields of lactic, formic, and acetic acids are produced from polysaccharide-containing materials by reacting the materials in a concentrated alkaline solution at elevated temperatures....	12/05/1989
4845208	Process for the oxidation of aldoses, catalyst used in said process and products thus obtained Process for the oxidation of aldoses and particularly of glucose into the corresponding aldonic acids, wherein oxidation is carried out in an alkaline medium by means of an oxygen-containing gas, in the presence of a catalyst obtained by adding an efficie...	07/04/1989
4816572	Thermocondensed lignocellulose material, and a method and an oven for obtaining it This material which has a hemi-cellulose content of less tha 2%, a benzopyrene content of less than 2 ug/kg and a calorific value which is about 20% greater than that of the starting material is obtained by isothermal treatment between 220° C. and 280° ...	03/28/1989
4553978	Process for converting ligneous matter of vegetable origin by torrefaction, and product obtained thereby The present invention relates to a process for converting ligneous matter of vegetable origin by torrefaction, and to the product obtained. Wood or any other ligneous matter is subjected in a neutral atmosphere to a treatment of torrefaction at a temperat...	11/19/1985
4401823	Hydrogenolysis of polyhydroxylated compounds Polyhydroxylated compounds such as glucose, sucrose, sorbitol, etc. are subjected to a hydrogenolysis reaction at hydrogenolysis conditions which include a temperature in the range of from about 175° to about 250° C. and a pressure in the range of from ...	08/30/1983
4288619	Process for the recovery of ଱-hydroxy- and ଱-amino-carboxylic acids from sugar-containing media The invention relates to a process for the recovery of ଱-hydroxy- and ଱-amino-carboxylic acids from sugary media containing them. According to the process of the invention: in a first phase, the mixture from which it is proposed to recover the �...	09/08/1981
4088660	Method for the separation and recovery of furfural and organic volatile acids, such as acetic acid and formic acid, from the process of preparation of furfural The object of the present invention is a method for the separation and recovery of furfural and organic volatile acids from a vapor mixture obtained in the process of preparation of furfural. According to the method, from a vapor mixture containing water ...	05/09/1978
4082788	Esterification and extraction process Organic acids contained in aqueous solution are separated and/or recovered by a process comprising adding an alcohol to the aqueous solution to esterify the acids present, while preferably simultaneously contacting the alcoholic mixture with a water-immis...	04/04/1978
4017421	Wet combustion process Aqueous solutions and suspensions of solid particles, even those containing less than one percent of organic materials, may be combusted with air, oxygen, or their mixtures in a process which provides for preheating in countercurrent batches of the raw or...	04/12/1977
4016207	Hydrolyzing di- and tricarboxy celluloses with sulfurous acid Di- and tricarboxy celluloses are hydrolyzed with sulfurous acid in an aqueous medium to a mixture of erythronic acid and glyoxylic acid, in the case of dicarboxy cellulose; to a mixture of meso tartaric acid and glyoxylic acid in the case of tricarboxy c...	04/05/1977

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Class 562/515 - Preparation by degradation of carbohydrates