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| Number | Title | Issue Date |
| 8461376 | Systems for alkyl ester production In one embodiment, a method for the production of alkyl esters comprises: introducing liquid biomass and an alcohol to a first transesterification reactor at a point in a lower 25% of the reactor; reacting the liquid biomass and the alcohol to form a liquid glycerol... | 06/11/2013 |
| 8455676 | Process for preparing carboxylic esters by reactive distillation In a process for preparing carboxylic esters by transesterification, a first feed stream comprising a first carboxylic ester, e.g. methyl formate, is introduced laterally into a reaction column at least one first feed point located between top and bottom of the reac... | 06/04/2013 |
| 8436202 | Use of pressure swing absorption for water removal from a wet methanol stream The present invention includes a process to dry a feed steam containing alcohol and a small quantity of water. The process includes the step of using pressure swing adsorption to produce a first alcohol stream of substantially dehydrated alcohol and a second mixed s... | 05/07/2013 |
| 7999131 | Manufacture of esters The invention relates to a process in which a compound R1COOR3 (I) is made by a transesterification reaction of an ester compound R1COOR2 (II) with an alcohol R3OH (III) in the presence of a transesterification ... | 08/16/2011 |
| 7696376 | Method for manufacture of esters by transesterification A method for the manufacture of an ester by transesterification allows the transesterification reaction to proceed within a short reaction time and under a pressure of the order of normal pressure. It was found that transesterification proceeds when a starting mater... | 04/13/2010 |
| 7399881 | Transesterification process of methyl acetate A transesterification process of methyl acetate is provided. The process comprises: (a) performing a first reactive distillation of a methyl acetate solution and a first alcohol to generate a first ester and a first mixture; (b) performing a first distillation of a ... | 07/15/2008 |
| 7358030 | Process for producing ether compound The present invention provides the following process for production of an ether compound, which is useful for chemical amplification type resist compositions, synthetic intermediates of pharmaceuticals, paints, or the like, with less side reaction and in high yield.... | 04/15/2008 |
| 7312355 | Method of preparing fatty acid monoesters The invention relates to a method of producing fatty acid monoesters and polyhydroxylic alcohols by means of transesterification between a polyhydroxylic alcohol and a compound that is selected from a fat of animal origin, a fat of vegetable origin, and a fatty acid... | 12/25/2007 |
| 7253305 | Tertiary alkyl acetate preparation Esters are formed by reaction of acetic anhydride with tertiary butyl or tertiary anyl alcohol in the presence of tertiary amine catalyst such as DMAP or NMI catalyst and acetic acid in amount sufficient to present catalyst degradation; in preferred practice a mixed... | 08/07/2007 |
| 7253316 | Flexible method for the joint production of (i) formic acid, (ii) a carboxylic acid comprising at least two carbon atoms and/or the derivatives thereof, and (iii) a carboxylic acid anhydride Disclosed is a method for jointly producing (i) formic acid (III); (ii) a carboxylic acid comprising at least two carbon atoms (II) and/or the derivatives thereof; and (iii) a carboxylic acid anhydride (VII). According to said method, (a) a formic acid ester (I) is ... | 08/07/2007 |
| 7211681 | Ester production method by transesterification reaction using solid acid catalyst It is an object of this invention to provide a method for producing an ester by a transesterification reaction in which the reaction can be stably performed in a short time at a pressure approximately equal to normal pressure. The ester is produced by a transesterif... | 05/01/2007 |
| 6992212 | Felxible method for the common production of formic acid, a carboxylic acid having at least two carbon atoms, and/or the derivatives of the same Formic acid and a carboxylic acid having at least two carbon atoms and/or derivatives thereof are prepared jointly by a process in which (a) a formic ester (I) is transesterified with a carboxylic acid having at least two carbon at... | 01/31/2006 |
| 6710204 | Decreasing method of N-oxyl compound There is provided a superior decreasing method of an N-oxyl compound contained in an easily polymerizable material, according to which the N-oxyl compound contained in an easily polymerizable material can be sufficiently decreased and loss of the easily polymerizabl... | 03/23/2004 |
| 6706910 | Method for producing cyclopropanecarboxylates There is provided a method for producing a cyclopropanecarboxylate of formula (1): which comprises contacting a cyclopropanecarboxylate of formula (2): with a monohydr... | 03/16/2004 |
| 6441220 | Methods for producing cyclopropane carboxylates There is provided a method for producing a cyclopropanecarboxylate of formula (3): ##STR1## wherein R1, R2, R3, R4 and R5 each independently represent: a hydrogen atom, halogen atom, an optionally sub... | 08/27/2002 |
| 6342199 | Method for carrying out reactions characterized by an equilibrium The invention relates to a process for conducting a chemical reaction characterized by an equilibrium in a reaction system designed as a loop reactor, said loop reactor comprising a reactor vessel (1), at least one loop connected to said reactor vessel (1... | 01/29/2002 |
| 6323362 | Continuous process for producing esters A process for the continuous and simultaneous manufacture of at least two different acetates by at least two simultaneous transesterification reactions comprising continuously bringing into contact in the presence of a catalyst in a reaction zone: (i) an ... | 11/27/2001 |
| 6316664 | Process for preparing hydroxy-containing compounds from formic acid esters Formic ester is transesterified with a hydroxyl-containing compound in the presence of a tertiary amine as transesterification catalyst to form a formic ester which differs from the formic ester used as reactant, and of a hydroxyl-containing compound whic... | 11/13/2001 |
| 6215019 | Synthesis of 5-decenyl acetate and other pheromone components The present invention relates to syntheses of 5-decenyl acetate, the major component in Peach Twig Borer pheromone, and other pheromone components. The syntheses entails few reaction steps, use commercially available starting materials, and have relativel... | 04/10/2001 |
| 6130191 | Process for the preparation of trimethylolpropane caprylate/caprate A process for the preparation of a mixture of trimethylolpropane caprylate and trimethylolpropane caprate comprising the steps of A) purifying a less than pure mixture of methyl caprylate and methyl caprate; B) reacting the purified mixture from step A) with t... | 10/10/2000 |
| 6018074 | Process for the preparation of polyalcohols A process for the preparation of polyalcohols comprises the stages: (a) Reaction of an alkanal or ketone with formaldehyde in aqueous solution in the presence of a tertiary amine, to form a formates containing polyalcohol product mixture, (b) removal of water,... | 01/25/2000 |
| 6008404 | Acrylate monomer preparation using alkali metal alkoxides as ester interchange catalysts and bromide salt polymerization inhibitors The present invention relates to a process to prepare alkyl (meth)acrylate esters from corresponding alkyl/methacrylate esters using an alkali metal alkoxide as an ester interchange catalyst to produce an alkyl (meth)acrylate ester monomer product C ... | 12/28/1999 |
| 5973214 | Method for producing an optically active 2-alkanol Both enantiomers of optically active 2-alkanol are produced by transesterification reaction of racemic 2-alkanol and aliphatic acid 2,2,2-trichloroethylester in the presence of enzyme derived from Candida antarctica. Both enantiomers of optically active 2... | 10/26/1999 |
| 5847239 | Transesterification process Dihydromyrcene is reacted with a carboxylic acid, eg acetic acid, to produce an ester which is then reacted with an alcohol in a transesterification reaction to produce (dihydro)myrcenol and another ester. The preferred alcohol is 4-tertiarybutylcyclohexa... | 12/08/1998 |
| 5817844 | Method of manufacturing a fatty acid ester of polyoxyalkylene alkyl ether A method of manufacturing a fatty acid ester of polyoxyalkylene alkyl ether wherein a fatty acid ester of polyoxyalkylene alkyl ether represented by the following formula (I) is produced through a reaction between a fatty acid alkyl ester with an alkylene... | 10/06/1998 |
| 5723639 | Esterification of fermentation-derived acids via pervaporation A low temperature method for esterifying ammonium- and amine-containing salts is provided whereby the salt is reacted with an alcohol in the presence of heat and a catalyst and then subjected to a dehydration and deamination process using pervaporation. T... | 03/03/1998 |
| 5543560 | Hydrogenolytic reduction of peroxidic ozonolysis products A method for the hydrogenolytic reduction of peroxidic ozonolysis products to the corresponding carbonyl compounds in the presence of an inert organic diluting agent and in the presence of a monolith catalyst at hydrogen pressures of 0.01 to 2.0 MPa and a... | 08/06/1996 |
| 5516776 | Enantioselective synthesis of antifolates A process and intermediates for the enantioselective synthesis of 5,10-dideaza-5,6,7,8-tetrahydrofolic acid are disclosed.... | 05/14/1996 |
| 5481029 | Process for preparation of ketones A process for preparing ketones, for example CF3 C(O)CH3, CF3 C(O)CH2 C(O)CF3 and CF3 C(O)CF2 H, in which ଲ-ketoesters are transesterified and decarboxylated using a carbox... | 01/02/1996 |
| 5430178 | Process for the preparation of acetic esters from methanol Acetic ester is produced economically by a gas phase carbonylation of methanol with carbon monoxide followed by a transesterification. Specifically, the inventive process comprises (a) carbonylating methanol in a gas phase with carbon monoxide to produce ... | 07/04/1995 |
| 5405992 | Process for concurrent esterification and separation using a simulated moving bed A process for the continuous esterification of at least one alcohol and at least one carboxylic acid to form at least one ester and water, and the concurrent separation of the esterification products has been developed. The process uses a solid bed which ... | 04/11/1995 |
| 5350879 | Transesterification using metal oxide solid solutions as the basic catalyst Base-catalyzed transesterification may be effected in the presence of certain metal oxide solid solutions and layered double hydroxides as the basic catalyst. Use of the latter materials as the base catalyst readily permits one to conduct transesterificat... | 09/27/1994 |
| 5254722 | Process for the production of triglycerides A process for the production of triglycerides of C1 -C4 alkyl esters of C6 -C22 fatty acids: a) where dry sodium carbonate catalyst is dissolved in glycerol and mixed with a molar excess of preferably the methyl este... | 10/19/1993 |
| 5225590 | Alkoxy methyl ether and alkoxy methyl ester derivatives Intermediates and methods for producing intermediates for use in preparing 9-(1,3-dihydroxy-2-propoxymethyl)-guanine and esters and ethers thereof.... | 07/06/1993 |
| 5183930 | Transesterification catalyst A process is described for preparing carboxylic acid esters via transestierification using a new heterogeneous, transition-metal transesterification catalyst of enhanced activity. The catalyst is prepared by an improved method of reacting a metal alkoxide... | 02/02/1993 |
| 5149861 | Recovery of trialkylamines and methyl formate from mixtures obtained in the preparation of trimethylolalkanes Trialkylamines and methyl formate are recovered from reaction mixtures obtained in the preparation of trimethylolalkanes by reaction of n-alkanals with from 2.2 to 4.5 moles of formaldehyde in aqueous solution in the presence of from 0.6 to 3 mole of tria... | 09/22/1992 |
| 5116546 | Process for producing fatty-acid lower-alkyl mono-esters The invention pertains to the production of high-purity fatty-acid lower-alkyl mono-esters which comprises a first transesterification step between glycerol fatty-acid esters and a lower alcohol, a separation step wherein the reaction product of the ester... | 05/26/1992 |
| 5093517 | Method for the esterification of thiopropionates There is disclosed a method for making compounds such as 3,6,9-trioxaundecane-1,11-bis (3-n-dodecylthiopropionate) which comprises reacting an alkyl thiopropionate with a glycol at temperatures between 50° C. and 180° C. in the presence of a catalytic a... | 03/03/1992 |
| 5047583 | Production of carboxylic acids A carboxylic acid of formula RCO2 H, for example acetic acid, is prepared from a formate ester of formula HCO2 R, for example methyl formate, by heating the ester at elevated temperature with an iridium catalyst, a halide promoter an... | 09/10/1991 |
| 4996357 | Process for preparing acetic acid Acetic acid is advantageously prepared from a starting material having a formic acid moiety and a methyl ester moiety by heating said starting material in the presence of (1) carbon monoxide, (2) at least one of (2-a) a metal accelerator selected from ber... | 02/26/1991 |
