Class / Patent application number | Description | Number of patent applications / Date published |
568865000 | Of ether | 9 |
20100036177 | PROCESSING OF NATURAL OIL-BASED PRODUCTS HAVING INCREASED VISCOSITY - Methods for the removal of volatilizable components from a natural oil-based product having a high viscosity are provided. The natural oil-based product can be a high viscosity oligomeric polyol prepared from epoxidized vegetable oils. The method involves heating a natural oil-based product to relatively low temperatures (about 225° C. or below) and then exposing the natural oil-based product to an environment comprising a reduced pressure and a sparging vapor. In particular, deodorization methods are provided. In deodorization processes, odor components such as hexanal, nonanal, and decanal are substantially removed from the natural oil-based product. The lower temperature process provides effective removal of the volatilizable components, while maintaining desirable product properties, such as the clarity of the product, and chemical and physical properties similar to that of the starting material. | 02-11-2010 |
20120283487 | METHODS OF USING TUNGSTEN CARBIDE CATALYSTS IN PREPARATION OF ETHYLENE GLYCOL - Tungsten carbide catalysts are used in preparation of ethylene glycol by hydrogenating degradation of cellulose. The catalyst includes tungsten carbide as main catalytic active component, added with small amount of one or more transition metals such as nickel, cobalt, iron, ruthenium, rhodium, palladium, osmium, iridium, platinum, and copper as the second metal, supported on one or more porous complex supports such as active carbon, alumina, silica, titanium dioxide, silicon carbide, zirconium oxide, for conversion of cellulose to ethylene glycol. The catalyst realizes high efficiency, high selectivity, and high yield in the conversion of cellulose to ethylene glycol at the temperature of 120-300° C., hydrogen pressure of 1-10 MPa, and hydrothermal conditions. Compared to the existing industrial synthetic method of ethylene glycol using ethylene as feedstock, the invention has the advantages of using renewable raw material resources, environment friendly process, and excellent atom economy. | 11-08-2012 |
20140066666 | Method For Producing 1,2-Pentanediol - A process for the preparation of 1,2-pentanediol by reaction of a starting material comprising one or both compounds from the group consisting of furfuryl alcohol and furfural with hydrogen in the presence of a first heterogeneous catalyst is described. | 03-06-2014 |
20140121420 | METHODS FOR PRODUCTION AND PROCESSING OF A GLYCOL REACTION PRODUCT OBTAINED FROM HYDROTHERMAL DIGESTION OF CELLULOSIC BIOMASS SOLIDS - Hydrothermal digestion of cellulosic biomass solids may be conducted such that a glycol reaction product is formed for subsequent processing. Processing of a glycol reaction product may include a drying operation conducted prior to condensation of the glycol reaction product into higher molecular weight compounds. Methods for digesting cellulosic biomass solids to form a glycol reaction product can comprise: providing cellulosic biomass solids and a slurry catalyst in a hydrothermal digestion unit, the slurry catalyst being capable of activating molecular hydrogen; heating the cellulosic biomass solids in the hydrothermal digestion unit in the presence of the slurry catalyst, a digestion solvent, and molecular hydrogen, thereby forming a liquor phase comprising soluble carbohydrates; and performing a first catalytic reduction reaction on the soluble carbohydrates within the hydrothermal digestion unit, thereby at least partially converting the soluble carbohydrates into a reaction product comprising a glycol. | 05-01-2014 |
20140243562 | HYDROGENOLYSIS OF FURFURYL ALCOHOL TO 1,2-PENTANEDIOL - The present invention provides a process for preparing 1,2-pentanediol by reacting furfuryl alcohol with hydrogen in the presence of a catalyst system. The catalyst system contains platinum oxide or contains ruthenium supported on aluminum oxide or activated carbon. The invention also relates to the respective catalysts and processes for producing the catalyst system. | 08-28-2014 |
20140275638 | METHOD FOR PREPARING TRIOLS AND DIOLS FROM BIOMASS-DERIVED REACTANTS - A method to make triols and diols is described. The method includes the steps of performing an aqueous-phase hydrodeoxygenation reaction on a feedstock containing a biomass-derived reactant in aqueous solution. The feedstock is contacted with a heterogeneous metal-containing bifunctional catalyst or a combination of two or more heterogeneous metal-containing catalysts that catalyze cleavage of C—C and C—O bonds, for a time, temperature, pressure, and weight hourly space velocity to yield a product mix comprising triols, diols, or combinations thereof. | 09-18-2014 |
20140330049 | METHODS AND SYSTEMS EMPLOYING A HORIZONTALLY CONFIGURED DIGESTION UNIT FOR HYDROTHERMAL DIGESTION OF CELLULOSIC BIOMASS SOLIDS - Biomass compaction during hydrothermal digestion of cellulosic biomass solids may become problematic, particularly as the vertical height of a cellulosic biomass charge increases. Compaction may be decreased in a horizontally configured hydrothermal digestion unit. Methods for digesting cellulosic biomass solids may comprise: providing a hydrothermal digestion unit having a length or a width greater than its height and containing a fluid phase digestion medium and a slurry catalyst capable of activating molecular hydrogen; introducing cellulosic biomass solids to the hydrothermal digestion unit; distributing the cellulosic biomass solids laterally within the hydrothermal digestion unit; after or while the cellulosic biomass solids are being distributed, supplying an upwardly directed flow of molecular hydrogen through the cellulosic biomass solids and the fluid phase digestion medium; and heating the cellulosic biomass solids in the presence of the slurry catalyst and the molecular hydrogen, thereby forming an alcoholic component derived from the cellulosic biomass solids. | 11-06-2014 |
20150126784 | REGENERATION OF CATALYST FOR HYDROGENATION OF SUGARS - A process for regenerating catalysts that have been deactivated or poisoned during hydrogenation of biomass, sugars and polysaccharides is described, in which polymerized species that have agglomerated to catalyst surfaces can be removed by means of washing the catalyst with hot water at subcritical temperatures. A feature of the process regenerates the catalysts in situ which allows the process to be adapted for used in continuous throughput reactor systems. Also described is a continuous hydrogenation process that incorporated the present regeneration process. | 05-07-2015 |
20160115108 | PROCESS FOR PRODUCING POLYHYDRIC ALCOHOL - A process for producing a polyhydric alcohol includes a step (I) of hydrogenating hemiacetal having a specific structure to obtain a reaction solution (I), and a step (II) of adding water to the reaction solution (I) obtained in the step (I) and further conducting hydrogenation. | 04-28-2016 |