Class / Patent application number | Description | Number of patent applications / Date published |
549464000 | Plural ring oxygens in the bicyclo ring system | 51 |
20080249323 | Sorbitol Conversion Process - A process for converting aqueous sorbitol to xylitol and isosorbide in the presence of an acid catalyst, and in the absence of an enzyme or of a hydrogenating catalyst, is disclosed. In the process, a sorbitol solution is reacted with an acid zeolite to produce xylitol and isosorbide. | 10-09-2008 |
20090176999 | Process for producing hexahydrofurofuranol derivative - The present invention provides; a process for producing a compound (IV) comprising a step of reacting a compound (I) with a compound (II) in the presence of an optionally substituted cyclic secondary amine to obtain a compound (III) and a step of sequentially or simultaneously eliminating R | 07-09-2009 |
20090187034 | PROCESS FOR THE PREPARATION OF STIRIPENTOL PARTICLES HAVING A DEFINED PARTICLE SIZE DISTRIBUTION - The invention relates to a process for the preparation of stiripentol particles having a defined particle size distribution. | 07-23-2009 |
20090253920 | METHOD FOR PREPARATION OF ANHYDROSUGAR ETHERS - A method for alkylation of an anhydrosugar compound in which a dialkyl carbonate is reacted with an anhydrosugar compound in the presence of a solid phase basic catalyst. A typical anhydrosugar compound is anhydrosugar alcohol, a dianhydromonoether and mixtures thereof. The reaction step uses zeolyte as the solid phase basic catalyst. The zeolite catalyst is typically a zeolite having ammonium groups. The reaction is carried out at a temperature below 240° C. and the reaction time is 2 hours or less. | 10-08-2009 |
20090259056 | Recovery and Refining of Dianhydrosugars - A process for the production of a refined dianhydrosugar-containing product is disclosed. The process includes controlled continuous crystallization of the dianhydrosugar-containing product to produce a solution saturated with the dianhydrosugar. The saturated solution is mechanically separated, for example by centrifugation, and the crystalline product is washed. The only solvent used is water. The dianhydrosugar-containing product is upgraded to at least 99.8% purity and recovery is 95% or greater. | 10-15-2009 |
20090259057 | Dianhydrosugar Production Process - An enhanced process for the production of a dianhydrosugar, such as isosorbide, from the corresponding sugar alcohol is described. The sugar alcohol is combined with an acid catalyst and reacted at elevated temperatures and at atmospheric pressure, eliminating the need for a vacuum. High selectivity and yields are achieved. | 10-15-2009 |
20100094028 | METHODS FOR THE PREPARATION OF HEXAHYDROFURO[2,3-b]FURAN-3-OL - Methods for the preparation of hexahydrofuro[2,3-b]furan-3-ol and especially its enantiomer (3R,3aS,6aR) hexahydrofuro[2,3-b]furan-3-ol, as well as certain novel intermediates for use in such methods. | 04-15-2010 |
20100130759 | NOVEL FUNCTIONAL COMPOUNDS WITH AN ISOSORBIDE OR ISOSORBIDE ISOMER CORE, PRODUCTION PROCESS AND USES OF THESE COMPOUNDS - The present invention relates to compounds of formula (I): R—(CH | 05-27-2010 |
20100160652 | STEREOSPECIFIC METHOD FOR THE PREPARATION OF DIOXA-BICYCLOOCTANE NITRATE COMPOUNDS - This invention relates to a new method for the stereospecific thiocarboxylation and nitration of organic compounds for the preparation of compounds according to formula (I): | 06-24-2010 |
20110060148 | PROCESS FOR CONVERTING POLYSACCHARIDES IN AN INORGANIC MOLTEN SALT HYDRATE - A process is disclosed for converting polysaccharides to platform chemicals. The process comprises dissolving the polysaccharides in a inorganic molten salt hydrate, converting the polysaccharides to monosaccharides, and converting the monosaccharides to platform chemicals that are easily separable from the inorganic molten salt hydrate. | 03-10-2011 |
20110071305 | PRODUCTION OF 5-MEMBERED AND 6-MEMBERED CYCLIC ESTERS OF POLYOLS - Described herein are improved methods for the preparation of 5- and 6-membered cyclic mono and diesters of sugar alcohols and anhydrosugar alcohols by reaction with an organic acid RCOOH over a solid acidic substrate. The process is adaptable to a continuous process for simultaneously making and separating the cyclic esters from the sugar alcohols and anhydrosugar alcohols under mild conditions using the solid acid substrate as both the catalyst and a chromatographic bed for separation. The reactions are performed at mild temperatures of 700 C to 1000 C and the formation of the cyclic esters is nearly quantitative. Also described is a method for making 5- and 6-membered cyclic mono and diesters of sugar alcohols and anhydrosugar alcohols using microwave irradiation in the presence of the organic acid. | 03-24-2011 |
20110092718 | POLYMERIZABLE CHIRAL COMPOUNDS COMPRISING 2,6-NAPHTHYL AND ISOMANNITOL UNITS, AND USE THEREOF AS CHIRAL DOPANTS - The present invention relates to compounds of the general formula I | 04-21-2011 |
20110160468 | PROCESS FOR THE PREPARATION OF (3R,3AS,6AR)-HEXAHYDROFURO [2,3-B] FURAN-3-YL (1S,2R)-3-[[(4-AMINOPHENYL) SULFONYL] (ISOBUTYL) AMINO]-1-BENZYL-2-HYDROXYPROPYLCARBAMATE - The present invention relates to a process for the preparation of (3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yl(1S,2R)-3-[[(4-aminophenyl)sulfonyl](isobutyl)amino]-1-benzyl-2-hydroxypropylcarbamate as well as novel intermediates for use in said process. (3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yl(1S,2R)-3-[[(4-aminophenyl)sulfonyl](isobutyl)amino]-1-benzyl-2-hydroxypropylcarbamate is particularly useful as an HIV protease inhibitor. | 06-30-2011 |
20110196161 | METHOD FOR PREPARING DIANHYDROHEXITOL DIESTER COMPOSITIONS - A method for preparing a dianhydrohexitol diester composition, characterized in that it comprises a step which consists in esterifying a dianhydrohexitol composition with a carboxylic acid in the presence of an acid catalyst and hypophosphorous acid. Preferably, the hypophosphorous acid is introduced in an amount ranging between 0.05 and 2 wt. % of dianhydrohexitol, and in a hypophosphorous acid/acid catalyst weight ratio less than 1/1. The method enables novel dianhydrohexitol diester compositions, for example isosorbide diesters, isomannide and/or isoidide richer in diester(s) and/or less coloured, useful in numerous industrial applications, in particular in plastic compositions, to be obtained. | 08-11-2011 |
20110237809 | Isosorbide Derivatives - Disclosed are derivatives of isosorbide having formula (1) | 09-29-2011 |
20110251409 | STEREOSPECIFIC METHOD FOR THE PREPARATION OF DIOXA-BICYCLOOCTANE NITRATE COMPOUNDS - This invention relates to a new method for the stereospecific thiocarboxylation and nitration of organic compounds for the preparation of compounds according to formula (I): | 10-13-2011 |
20110269977 | METHOD FOR PRODUCING 2,6-DIOXABICYCLO-(3.3.0)-OCTANE-4,8-DIONE - The invention relates to a method for producing 2,6-dioxabicyclo-(3.3.0)-octane-4,8-dione (I), comprising the oxidation of dianhydrohexitols (II-IV), or of corresponding hydroxy ketones, with an oxygen-containing gas in the presence of a catalyst composition, the reaction proceeding without the addition of halogen sources. | 11-03-2011 |
20120041216 | METHOD FOR PRODUCING MULTICYCLICAL RING SYSTEMS CARRYING AMINO GROUPS - The invention relates to a method for the amination of at least one keto group in a multicyclic ring system comprising at least one keto group into an amino group, using at least one enzyme E having transaminase activity. | 02-16-2012 |
20120108827 | PROCESS FOR CONVERTING POLYSACCHARIDES IN AN INORGANIC MOLTEN SALT HYDRATE - A process is disclosed for converting a polysaccharide-containing biomass material to platform chemicals. | 05-03-2012 |
20120116101 | METHOD FOR PREPARING DIAHYDROHEXITOL DIESTER COMPOSITIONS - A dianhydrohexitol diester composition is obtained by esterifying a dianhydrohexitol composition with a carboxylic acid in the presence of an acid catalyst and hypophosphorous acid. Preferably, the hypophosphorous acid is introduced in an amount between 0.05 and 2 wt. percent of dianhydrohexitol, and in a hypophosphorous acid/acid catalyst weight ratio of less than 1/1. Dianhydrohexitol diester compositions, for example isosorbide diesters, isomannide and/or isoidide rich in diester(s), and having a low yellow index (YI), are useful in numerous industrial applications, in particular in plastic compositions. | 05-10-2012 |
20120149923 | BISPHENOL POLYMER STRUCTURAL UNITS AND METHOD OF MAKING THE SAME - Provided herein are isosorbide-based bisphenol polymer structural units and methods of making the same. These structural units may be polymerized with one or more other types of structural units to form polymers, such as polycarbonates. | 06-14-2012 |
20120296101 | PROCESS FOR THE PREPARATION OF DARUNAVIR AND DARUNAVIR INTERMEDIATES - The present invention relates to a process for the preparation of darunavir, a nonpeptide protease inhibitor (PI), useful for the treatment of HIV/AIDS patients harboring multidrug-resistant HIV-1 variants that do not respond to previously existing HAART regimens. The present invention further relates to processes for the stereo-directed preparation of darunavir intermediates, in particular (3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-ol and to certain novel intermediates obtained by such processes. | 11-22-2012 |
20130116451 | METHOD FOR PREPARING DIAMINO-DIANHYDRO-DIDEOXYHEXITOLS, PARTICULARLY PREFERABLY 2,5-DIAMINO-1,4:3,6-DIANHYDRO-2,5-DIDEOXY-D-HEXITOL - Method for preparing diamino-dianhydro-dideoxyhexitols, particularly 2,5-diamino-1,4:3,6-dianhydro-2,5-dideoxy-D-hexitol. | 05-09-2013 |
20130123520 | MICROWAVE ASSISTED SYNTHESIS OF DEHYDRATED SUGAR DERIVATIVES HYDROXYMETHYLFURFURAL, LEVULINIC ACID, ANHYDROSUGAR ALCOHOLS, AND ETHERS THEREOF - Methods for the production of dehydrated sugars and derivatives of dehydrated sugars using microwave (MW) irradiation and methods of purifying the same are described. The dehydrated sugars derivatives include 5-hydroxymethyl-2-furfural (HMF) and anhydrosugar alcohols such as sorbitans and isosorbide. The derivatives include HMF ethers, levulinic acid esters, and ether derivatives of the anhydrosugar alcohols. The described methods require lower reaction temperatures and shorter reaction times than similar non microwave mediated reactions known in the art. Typical reaction conditions are 120-210° C., and typical reaction times are 30 minutes or less. | 05-16-2013 |
20130165672 | PROCESS FOR THE DIRECT AMINATION OF SECONDARY ALCOHOLS WITH AMMONIA TO GIVE PRIMARY AMINES - The invention relates to a process for preparing primary amines which comprises the process steps
| 06-27-2013 |
20130267718 | NOVEL AMIDE GELLANT COMPOSITIONS CONTAINING ISOSORBIDE - Disclosed herein are ester-terminated polyamide gellant compounds end-caped with isosorbide and UV curable ink compositions containing them. | 10-10-2013 |
20130281718 | HIGH-FLUIDITY NON-CAKING DIANHYDROHEXITOL PELLETS - Dianhydrohexitol pellets, whose fluidity is preserved even after lengthy storage, include between 90% and 100%, preferably between 95% and 100%, and more preferentially between 97% and 100% of dianhydrohexitols by weight, on a dry weight basis, and have the particularity of not being subject to caking. A process for preparing the dianhydrohexitol pellets is also described. | 10-24-2013 |
20130296584 | Production of 5-Membered and 6-Membered Cyclic Esters of Polyols - Described herein are improved methods for the preparation of 5- and 6-membered cyclic mono and diesters of sugar alcohols and anhydrosugar alcohols by reaction with an organic acid RCOOH over a solid acidic substrate. The process is adaptable to a continuous process for simultaneously making and separating the cyclic esters from the sugar alcohols and anhydrosugar alcohols under mild conditions using the solid acid substrate as both the catalyst and a chromatographic bed for separation. The reactions are performed at mild temperatures of 70° C. to 100° C. and the formation of the cyclic esters is nearly quantitative. Also described is a method for making 5- and 6-membered cyclic mono and diesters of sugar alcohols and anhydrosugar alcohols using microwave irradiation in the presence of the organic acid. | 11-07-2013 |
20130303790 | Pseudopolymorphic Forms Of A HIV Protease Inhibitor - New pseudopolymorphic forms of (3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yl(1S,2R)-3-[[(4-aminophenyl)sulfonyl](isobutyl)amino]-1-benzyl-2-hydroxypropylcarbamate and processes for producing them are disclosed. | 11-14-2013 |
20130338381 | Crude Reaction Product Comprising Dianhydro Sugar Alcohol and Method for Preparing the Same - A crude reaction product includes: (A) about 90 to 100% by weight of a dianhydro sugar alcohol in a solid form and (B) about 0 to about 10% by weight of a reaction byproduct in a solid form. The reaction product is prepared by the steps of (a) preparing a monoanhydro sugar alcohol by reacting a sugar alcohol in the presence of a first cyclization catalyst and (b) preparing a dianhydro sugar alcohol by reacting the monoanhydro sugar alcohol in the presence of a second catalyst. | 12-19-2013 |
20140039208 | PROCESS FOR CONVERTING POLYSACCHARIDES IN AN INORGANIC MOLTEN SALT HYDRATE - A process is disclosed for converting polysaccharides to platform chemicals. The process comprises dissolving the polysaccharides in a inorganic molten salt hydrate, converting the polysaccharides to monosaccharides, and converting the monosaccharides to platform chemicals that are easily separable from the inorganic molten salt hydrate. | 02-06-2014 |
20140066638 | NOVEL PROCESS FOR PREPARATION OF DARUNAVIR AND DARUNAVIR ETHANOLATE OF FINE PARTICLE SIZE - The present invention provides a novel process for preparation of darunavir that involves reduction of [(1S,2R)-3-[[(4-nitrophenyl)sulfonyl](2-methylpropyl)amino]-2-hydroxy-1-(phenylmethyl)propyl]carbamic acid (3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yl ester, of formula (5). The present invention also provides darunavir ethanolate of particle size wherein d | 03-06-2014 |
20140088315 | METHOD FOR PREPARATION OF ANHYDROSUGAR ALCOHOLS - Disclosed is a method for the preparation of an anhydrosugar alcohol using a starch-derived hexitol such as sorbitol or mannitol Anhydrosugar alcohol is in the form of a diol having two hydroxyl groups in the molecule thereof and has a very high utility value as a physical property modifier which can be used primarily in plastics. Representative examples of anhydrosugar alcohols include isosorbide and isomannide. These anhydrosugar alcohols are capable of increasing a glass transition temperature of and improving strength of PET, polyesters, polycarbonates, etc., and are therefore highly valuable as biodegradable environmentally-friendly bioplastics. | 03-27-2014 |
20140135510 | PROCESS FOR CONVERTING POLYSACCHARIDES IN AN INORGANIC MOLTEN SALT HYDRATE - A process is disclosed for converting a polysaccharide-containing biomass material to platform chemicals. | 05-15-2014 |
20140200356 | POLYMORPHS OF DARUNAVIR - The present invention provides novel solvated forms of darunavir and processes for their preparation. The present invention also provides novel processes for the preparation of darunavir amorphous form and pharmaceutical compositions comprising it. Thus, for example, darunavir 2-methyl-2-butanol solvate was dissolved in methylene dichloride, distilled under vacuum at 45° C. to obtain a residue, cyclohexane was added to the residue and stirred for 30 hours at 20 to 25° C., and the separated solid was filtered, washed with cyclohexane and dried under vacuum at 50° C. for 12 hours to yield darunavir amorphous form. | 07-17-2014 |
20140350270 | Crystalline Darunavir - The present invention relates to a non-solvated crystalline Darunavir, process for its preparation and pharmaceutical composition comprising it. The present invention also relates to a process for the preparation of amorphous Darunavir from a non-solvated crystalline Darunavir. | 11-27-2014 |
20140371472 | METHOD OF MAKING ISOIDIDE - Disclosed is a process for the preparation of isoidide from isosorbide. An aqueous solution of isosorbide is subjected to epimerization in the presence of hydrogen under the influence of a catalyst comprising ruthenium on a support, preferably a carbon support. The process of the invention can be conducted using a relatively low hydrogen pressure, and leads to a desired distribution of epimers, favoring isoidide over isomannide and isosorbide. | 12-18-2014 |
20150073158 | METHOD FOR PREPARING FUROFURAN LIGNAN COMPOUND - The present invention relates to a method for preparing a furofuran lignan compound, comprising a step of selecting and alkylating an epoxy alcohol compound and an optical isomer thereof. (+)-furofuran lignan and (−)-furofuran lignan, as well as an optical isomer thereof, can be selectively prepared by means of the method. | 03-12-2015 |
20150094477 | PRODUCTION METHOD FOR ANHYDRO SUGAR ALCOHOL HAVING MARKEDLY REDUCED ION CONTENT AND IMPROVED COLOUR CHARACTERISTICS - The present invention relates to a production method for an anhydro sugar alcohol having a markedly reduced ion content and improved colour characteristics, and, more specifically, relates to a method for producing an anhydrous sugar alcohol having a markedly reduced ion content, markedly lowered electrical conductivity and improved colour characteristics, which is obtained by subjecting hydrogenated sugar (sugar alcohol) to a dehydration reaction and thereby converting same to an anhydrous sugar alcohol and then subjecting distilled water, which has been isolated through a distillation step, to a decolourizing process using activated carbon, and subsequently bringing the resulting decolourized substance into contact with an ion exchange resin. | 04-02-2015 |
20150112088 | METHOD FOR PREPARING HIGH PURITY ANHYDROSUGAR ALCOHOLS BY THIN FILM DISTILLATION - The present invention relates to a method for preparing high purity anhydrosugar alcohols using hydrogenated sugar, and more specifically, to a method for preparing high purity anhydrosugar alcohols (particularly, isosorbide, isomannide, isoidide, and the like) with a purity of 97.5% or higher (more preferably, 98.5% or higher) and a pH of a distillate of 3.7 or higher (more preferably, 4.0 or higher) in a distillation yield of 87% or higher (more preferably, 90% or higher) by adding an acid to hexitol so as to convert the same into anhydrosugar alcohols, and single-stage distilling the converted product by using an internal condenser type thin film evaporator. | 04-23-2015 |
20150141671 | DIALLYL ETHERS OF ANHYDROHEXITOLS AND PROCESSES FOR MAKING THE SAME - The invention concerns diallylisoidide in a first aspect, and in a related aspect concerns an improved method for making the diallyl ether derivatives of anhydrohexitols generally, whether isosorbide, isomannide, isoidide or a mixture of two or all three of these, whereby these derivatives may be produced efficiently up to quantitative yields. | 05-21-2015 |
20150141672 | MONOALLYL, MONOGLYCIDYL ETHERS AND BISGLYCIDYL ETHERS OF ISOHEXIDES - An improved, high yielding process is disclosed for making bisglycidyl ether derivatives of isosorbide, isomannide and/or isoidide, wherein up to quantitative yields overall are demonstrated. In another related aspect, a process is disclosed for making novel monoallyl, monoglycidyl ether derivatives or a combination of monoallyl, monoglycidyl ether derivatives and bisglycidyl ether derivatives via the same diallyl isohexide intermediate. | 05-21-2015 |
20150299216 | METHOD FOR PREPARING ANHYDROUS SUGAR ALCOHOL - The present invention relates to a method for preparing anhydrous sugar alcohol, and more particularly, to a cheap and highly efficient method for preparing anhydrous sugar alcohol having a high final purity of at least 99%, and having good ion content, pH, conductivity, and color properties. According to the method, a hydrogenated sugar is dehydrated so as to be transformed into anhydrous sugar alcohol, and a series of processes including distillation, crystallization, decoloration, and ion exchange resin treatment are conducted. | 10-22-2015 |
20150307511 | METHOD FOR PREPARING HIGH-PURITY ANHYDROSUGAR ALCOHOL USING SEQUENTIAL COMBINATION OF THIN FILM DISTILLATION AND SHORT PATH DISTILLATION - The present invention relates to a technique for preparing an anhydrosugar alcohol using hydrogenated sugar as a raw material and, more specifically, to a technique for preparing a high-purity anhydrosugar alcohol (in particular, isosorbide, isomannide, isoidide, and the like) having a purity of 98% or higher and containing less than 0.1% of sorbitol and a sorbitan isomer, which are impurities, in a high total distillation yield of 94% or higher (more preferably, 95% or higher) by adding an acid to hydrogenated sugar (for example, hexitol) to convert same to an anhydrosugar alcohol, and then distilling the converted liquid over two or more stages by sequentially using a combination of an external condenser type wiped film evaporator and an internal condenser type short path evaporator. | 10-29-2015 |
20150336978 | IMPROVED METHOD FOR MANUFACTURING 1,4:3,6-DIANHYDROHEXITOL DI(ALKYL CARBONATE)S - The present invention relates to a process for the manufacturing of pure and substantially oligomers-free 1,4:3,6-dianhydrohexitol di(alkyl carbonate)s which comprises the steps of: a) Preparing a reaction mixture consisting of at least one dianhydrohexitol, at least 2 molar equivalents with respect to the amount of dianhydrohexitol present, of at least one dialkyl carbonate of formula R—O—C(═O)—O—R, where R has the same meaning indicated above, and from 0.01 to less than 0.1 molar equivalents of a transesterification catalyst with respect to the amount of dianhydrohexitol present; and b) Heating the reaction mixture up to its reflux temperature in a reactor preferably equipped with a rectification column comprising a number of theoretical distillation plates sufficient to separate continuously from the reaction mixture by fractional distillation the alcohol obtained or the azeotrope which the alcohol forms with the dialkyl carbonate present in the reaction mixture. The process comprises further recovering the transesterification catalyst from the reaction mixture and isolating the 1,4:3,6-dianhydrohexitol di(alkyl carbonate). | 11-26-2015 |
20150336980 | Pseudopolymorphic Forms Of A HIV Protease Inhibitor - New pseudopolymorphic forms of (3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yl(1S,2R)-3-[[(4-aminophenyl)sulfonyl](isobutyl)amino]-1-benzyl-2-hydroxypropylcarbamate and processes for producing them are disclosed. | 11-26-2015 |
20150353574 | METHOD FOR PRODUCING ANHYDROSUGAR ALCOHOL THROUGH CONTINUOUS DEHYDRATION REACTION OF HYDROGENATED SUGAR - The present invention relates to a method for producing an anhydrosugar alcohol and, more specifically, to a method for producing an anhydrosugar alcohol which, when the step of subjecting a hydrogenated sugar to a dehydration reaction in a reactor so as to convert same to an anhydrosugar alcohol is performed, allows the hydrogenated sugar to be continuously introduced into the reactor and the produced anhydrosugar alcohol to be continuously discharged out of the reactor while the dehydration reaction is carried out, also prevents a reaction mixture from circulating inside and outside the reactor while the dehydration reaction is carried out, and thereby can significantly improve production efficiency compared with a conventional process adopting a batch or semi-batch-type dehydration reaction and thus can be appropriately applied particularly to a large-scale anhydrosugar alcohol production process. | 12-10-2015 |
20160016969 | ISOHEXIDE MONOTRIFLATES AND PROCESS FOR SYNTHESIS THEREOF - Isohexide monotriflate compounds and a method of preparing the same are described. The method involves reacting a mixture of an isohexide, a trifluoromethanesulfonate anhydride, and either 1) a nucleophilic base or 2) a combination of a non-nucleophilic base and a nucleophile. The isohexide monotriflate compounds can serve as precursor materials from which various derivative compounds can be synthesized. | 01-21-2016 |
20160016970 | Process for Acid Dehydration of Sugar Alcohols - A process is described for the acid-catalyzed dehydration of a sugar alcohol, wherein the catalyst comprises a water-tolerant Lewis acid. In particular embodiments, the catalyst comprises a homogeneous water-tolerant Lewis acid, especially a homogeneous Lewis acid selected from the group consisting of bismuth (III) triflate, gallium (III) triflate, scandium (III) triflate, aluminum triflate, tin (II) triflate and indium (III) triflate. Such catalysts are effective for dehydrating both of sorbitol and the 1,4-sorbitan dehydration precursor of isosorbide, and bismuth (III) triflate particularly is beneficial for dehydrating mannitol to isomannide. | 01-21-2016 |
20160168318 | BIOSOURCED ALKYD RESIN AND METHOD FOR MANUFACTURING SUCH AN ALKYD RESIN | 06-16-2016 |
20160251370 | PROCESS FOR PREPARING ISOSORBIDE ETHOXYLATE DI(METH)ACRYLATE | 09-01-2016 |