Patent application number | Description | Published |
20090118464 | PREPARATION OF POLYTRIMETHYLENE ETHER GLYCOL OR COPOLYMERS THEREOF - This invention relates to a process for preparing polytrimethylene ether glycols or copolymers thereof having a number-average molecular weight of at least about 250 g/mole by a polycondensation reaction using at least one acid catalyst. | 05-07-2009 |
20090118465 | PREPARATION OF POLYTRIMTHYLENE ETHER GLYCOL OR COPOLYMERS THEREOF - This invention relates to a process for preparing polytrimethylene ether glycols or copolymers thereof by a polycondensation reaction using at least one acid catalyst, wherein the temperature of the reaction is controlled such that the average temperature during the first half of the reaction is higher than the average temperature during the second half of the reaction. | 05-07-2009 |
20090234118 | Ionic Liquids - The present invention relates to compositions of matter that are ionic liquids, the compositions comprising any of eleven cations combined with any of three fluorinated sulfonated anions. Compositions of the invention should be useful as solvents and, perhaps, as catalysts for many reactions, including aromatic electrophilic substitution, nitration, acylation, esterification, etherification, oligomerization, transesterification, isomerization and hydration. | 09-17-2009 |
20090234119 | Ionic Liquids - The present invention relates to compositions of matter that are ionic liquids, the compositions comprising any of eleven cations combined with any of three fluorinated sulfonated anions. Compositions of the invention should be useful as solvents and, perhaps, as catalysts for many reactions, including aromatic electrophilic substitution, nitration, acylation, esterification, etherification, oligomerization, transesterification, isomerization and hydration. | 09-17-2009 |
20090234120 | Ionic Liquids - The present invention relates to compositions of matter that are ionic liquids, the compositions comprising any of eleven cations combined with any of three fluorinated sulfonated anions. Compositions of the invention should be useful as solvents and, perhaps, as catalysts for many reactions, including aromatic electrophilic substitution, nitration, acylation, esterification, etherification, oligomerization, transesterification, isomerization and hydration. | 09-17-2009 |
20090292126 | Ionic Liquids - The present invention relates to compositions of matter that are ionic liquids, the compositions comprising any of eleven cations combined with any of three fluorinated sulfonated anions. Compositions of the invention should be useful as solvents and, perhaps, as catalysts for many reactions, including aromatic electrophilic substitution, nitration, acylation, esterification, etherification, oligomerization, transesterification, isomerization and hydration. | 11-26-2009 |
20100024810 | DECRYSTALLIZATION OF CELLULOSIC BIOMASS WITH AN ACID MIXTURE COMPRISING PHOSPHORIC AND SULFURIC ACIDS - The present invention provides a process for treating biomass to produce sugars. The process is directed to decrystallizing cellulose by contacting biomass with an acid mixture comprising sulfuric acid and phosphoric acid at particular molar ratios. Following decrystallization, the biomass may be hydrolyzed with the acid mixture to produce a saccharification product comprising sugars. | 02-04-2010 |
20100125135 | SUGAR PRODUCTION BY DECRYSTALLIZATION AND HYDROLYSIS OF POLYSACCHARIDE ENRICHED BIOMASS - Sugar solutions are obtained from polysaccharide enriched biomass by contacting biomass with water and at least one nucleophilic base to produce a polysaccharide enriched biomass comprising a solid fraction and a liquid fraction. The solid fraction is separated from the lignin-containing liquid fraction and contacted with an acid solution, the acid solution comprising about 70 weight percent to about 100 weight percent sulfuric acid or an acid mixture comprising phosphoric acid and sulfuric acid, at a temperature and for a reaction time sufficient to produce a decrystallized biomass mixture. Water is added and the diluted biomass mixture is then hydrolyzed to produce a saccharification product comprising sugars. | 05-20-2010 |
20100145073 | N-SUBSTITUTED PYRROLIDONIUM IONIC LIQUIDS - This invention relates to compounds useful as ionic liquids that are based on an N-substituted pyrrolidinone and incorporate a pendant ammonium cation that is spaced from the pyrrolidone ring by a variable length linker, which compounds may be represented by the structure of the following Formula I: | 06-10-2010 |
20100145074 | FUNCTIONALIZED N-SUBSTITUTED PYRROLIDONIUM IONIC LIQUIDS - This invention relates to compounds useful as ionic liquids that are based on an N-substituted pyrrolidinone and incorporate a pendant ammonium cation that is spaced from the pyrrolidone ring by a variable length linker. | 06-10-2010 |
20100145093 | Manufacture of Hydrofluoroalkanesulfonic Acids - A process for manufacture of hydrofluoroalkanesulfonic acid with at least one hydrogen bonded to the carbon atom adjacent to the carbon atom bonded to the sulfonic acid group comprising: contacting a fluoroolefin with sulfite in an aqueous solution adjusted to about pH 4 to pH 12; removing water from the solution to form a solid; directly treating the solid with oleum; and distilling the hydrofluoroalkanesulfonic acid therefrom. Also a process for manufacture of potassium hydrofluoroalkanesulfonate in high purity is described. | 06-10-2010 |
20100150816 | Methods for Purifying an Aqueous Hydrochloric Acid Solution - Methods for purifying an aqueous hydrochloric acid solution waste stream having an impurity fraction comprising an initial Ti fraction, an initial S fraction and an initial Si fraction; that provide purified aqueous hydrochloric acid solutions having a final Ti fraction of less than 250 ppm, a final S fraction of less than 200 ppm, and a final Si fraction of less than 10 ppm, which may be determined with inductively coupled plasma spectroscopy. Process steps in various embodiments include sparging with an gas; mixing the sparged solution with a precipitation agent comprising a sufficient amount of an alkali earth metal salt and, optionally, a phosphoric acid source, to provide a metal salt precipitate; and mixing the initial aqueous acid solution or, optionally, the sparged aqueous acid solution, with a flocculating polymer. A preferred alkali earth metal salt is barium chloride and preferred flocculating polymers are poly(diallyldialkylammonium chloride) homopolymers and copolymers. | 06-17-2010 |
20100174120 | PROCESSES FOR MAKING DIBUTYL ETHERS FROM ISOBUTANOL - Processes for preparing dibutyl ethers from isobutanol using an ionic liquid. | 07-08-2010 |
20100179355 | PROCESSES FOR MAKING DIALKYL ETHERS FROM ALCOHOLS - Processes for preparing dibutyl ethers from 2-butanol using an ionic liquid. | 07-15-2010 |
20100197974 | PROCESSES FOR MAKING DIALKYL ETHERS FROM ALCOHOLS - Processes for the preparation of dialkyl ethers from C | 08-05-2010 |
20100197975 | PROCESS FOR MAKING DIALKYL ETHERS FROM ALCOHOLS - Processes for preparing dialkyl ethers from C | 08-05-2010 |
20100204522 | PROCESS FOR MAKING DIBUTYL ETHERS FROM ISOBUTANOL - Processes for preparing dibutyl ethers from isobutanol using an ionic liquid. | 08-12-2010 |
20110039203 | Hydrofluoroalkanesulfonic Acids and Salts from Fluorovinyl Ethers - Hydrofluoroalkanesulfonates of the general formula R—O—CXH—CX | 02-17-2011 |
20110112320 | Manufacture of Hydrofluoroalkanesulfonic Acids - A process for manufacture of hydrofluoroalkanesulfonic acid with at least one hydrogen bonded to the carbon atom adjacent to the carbon atom bonded to the sulfonic acid group comprising: contacting a fluoroolefin with sulfite in an aqueous solution adjusted to about pH 4 to pH 12; removing water from the solution to form a solid; directly treating the solid with oleum; and distilling the hydrofluoroalkanesulfonic acid therefrom. Also a process for manufacture of potassium hydrofluoroalkanesulfonate in high purity is described. | 05-12-2011 |
20110137048 | FUNCTIONALIZED N-SUBSTITUTED PYRROLIDONIUM IONIC LIQUIDS - This invention relates to compounds useful as ionic liquids that are based on an N-substituted pyrrolidinone and incorporate a pendant ammonium cation that is spaced from the pyrrolidone ring by a variable length linker. | 06-09-2011 |
20110296993 | CARBON DIOXIDE REMOVAL AND IONIC LIQUID COMPOUNDS USEFUL THEREIN - This invention relates to compounds useful as ionic liquids that are based on an N-substituted pyrrolidinone and incorporate a pendant ammonium cation that is spaced from the pyrrolidone ring by a variable length linker; and to methods of carbon dioxide removal in which they may be used. | 12-08-2011 |
20120130088 | N-Substituted Pyrrolidonium Ionic Liquids with Expanded Linker - This invention relates to compounds useful as ionic liquids that are based on an N-substituted pyrrolidinone and incorporate a pendant ammonium cation that is spaced from the pyrrolidone ring by a variable length linker. | 05-24-2012 |
20130337249 | Insulating Material Comprising Nonwoven Webs - Insulating materials are provided, the insulating materials comprising a nonwoven web comprising a plurality of continuous spunbonded polyester bicomponent fibers. Each of the plurality of bicomponent fibers comprises a) from about 20% by weight to about 80% by weight of poly(ethylene terephthalate) in a core, and b) from about 80% by weight to about 20% by weight of poly(trimethylene terephathalate) in a sheath surrounding the core, wherein the amounts in percent by weight are based on the total weight of each of the plurality of bicomponent fibers. Also provided are electrical apparatuses comprising the insulating materials and a dielectric fluid, as well as a dielectric material comprising the nonwoven web impregnated with at least 10 weight percent of a dielectric fluid. | 12-19-2013 |
20140079941 | PHENOLIC FOAMS WITH BLOWING AGENT 1,1,1,4,4,4-HEXAFLUORO-2-BUTENE - Disclosed are foam compositions and processes to form closed-cell phenolic foams. The foams comprises a continuous polymeric phase defining a plurality of cells, wherein the continuous polymeric phase comprises a phenol-formaldehyde resole derived from a phenol and formaldehyde, and wherein the plurality of cells comprises a plurality of open-cells and a plurality of closed-cells with an open-cell content measured according to ASTM D6226-5, of less than 50%. The foam composition also comprises a discontinuous phase disposed in at least a portion of the plurality of closed-cells, the discontinuous phase comprising 1,1,1,4,4,4-hexafluoro-2-butene. | 03-20-2014 |
20140093720 | MIXED TANNIN-PHENOLIC FOAMS - Disclosed are foam compositions and processes to form mixed tannin-phenolic foams. The foams comprises a continuous polymeric phase defining a plurality of cells, wherein the continuous polymeric phase comprises a mixed-resin derived from a phenol, a tannin, and a first monomer, and wherein the plurality of cells comprises a plurality of open-cells and a plurality of closed-cells with an open-cell content measured according to ASTM D6226-5, of less than 50%. The foam composition also comprises a discontinuous phase disposed in at least a portion of the plurality of closed-cells, the discontinuous phase comprising one or more blowing agents. | 04-03-2014 |
20140184371 | INSULATING MATERIAL CONTAINING POLY(PHENYLENE-1,3,4-OXADIAZOLE) - A nonwoven web of poly(phenylene-1,3,4-oxadiazole) and polymetaphenylene isopthalamide. was found to have greater retention of tensile strength than kraft paper after immersion in oil at high temperature, making it useful as an insulation material for transformers. | 07-03-2014 |
20140186576 | INSULATING MATERIAL CONTAINING NANOCELLULOSE - A nonwoven web of unmodified or cyanoethylated nanocellulose was found to have greater strength than kraft paper after immersion in oil at high temperature, making it useful as an insulation material for transformers. A mixture of nanocellulose and polymetaphenylene isophthalamide has further improved properties for use as an insulating material. | 07-03-2014 |