| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 560076000 | Polycarboxylic acid | 68 |
| 20100105943 | HYPERBRANCHED POLYESTERS - The present invention relates to new hyperbranched polyesters based on oligohydroxycarboxylic acids with defined functionality. | 04-29-2010 |
| 20100168461 | Bio-Based Terephthalate Polyesters - Bio-based terephthalic acid (bio-TPA), bio-based dimethyl terephthalate (bio-DMT), and bio-based polyesters, which are produced from a biomass containing a terpene or terpenoid, such as limonene are described, as well as the process of making these products. The bio-based polyesters include poly(alkylene terephthalate)s such as bio-based poly(ethylene terephthalate) (bio-PET), bio-based poly(trimethylene terephthalate) (bio-PTT), bio-based poly(butylene terephthalate) (bio-PBT), and bio-based poly(cyclohexylene dimethyl terephthalate) (bio-PCT). | 07-01-2010 |
| 20110015426 | NOVEL DIAMANTANE COMPOUNDS, LIQUID CRYSTALLINE COMPOUNDS, AND LIQUID CRYSTALLINE COMPOSITIONS - A liquid crystalline compound has excellent liquid crystal properties, particularly high phase transition temperature. Diamantane compounds are represented by the general formula (I): | 01-20-2011 |
| 20120253059 | Hydroformylation Of Butenes - Mixed butene streams containing butene-1 and isobutylene and optionally butene-2 are hydroformylated under conditions that hydroformylates all the monomers to yield a mixture of valeraldehydes. Higher temperatures and/or longer residence times and/or higher partial pressure of carbon monoxide than in conventional processes are used to ensure hydroformylation of all the monomers. | 10-04-2012 |
| 20120302781 | Catalytic Depolymerization of Polymers Containing Electrophilic Linkages Using Nucleophilic Reagents - The disclosure relates to methods and materials useful for depolymerizing a polymer. In one embodiment, for example, the disclosure provides a method for depolymerizing a polymer containing electrophilic linkages, wherein the method comprises contacting the polymer with a nucleophilic reagent in the presence of a guanidine-containing compound. The methods and materials of the disclosure find utility, for example, in the field of waste reclamation and recycling. | 11-29-2012 |
| 20120310004 | NONYL ALCOHOLS WITH A LOW DEGREE OF BRANCHING AND THEIR DERIVATIVES - The invention relates to nonyl alcohols with a low degree of branching and derivatives produced using them. In particular the present invention relates to mixture of primary nonyl alcohols in which at least 80% of the alkyl chains are linear and at least 15% of the alkyl chains are branched at the 2-carbon position and its derivatives. The low degree of branching produces derivatives that are more elongated and less bulky that similar derivatives produced with more highly branched alcohols. | 12-06-2012 |
| 20140249328 | FORMULATIONS - This invention relates to a formulation comprising a compound of formula (I) where R1 and R2 are each independently hydrogen, optionally substituted C1-18 alkyl, optionally substituted C1-18 alkenyl, optionally substituted C3-8 cycloalkyl, optionally substituted C3-8 cycloalkenyl or optionally substituted aryl; provided that the total number of carbon atoms in R1 and R2 is an integer from 5 to 40 inclusive; the use of a compound of formula (I) (i) as an adjuvant provided that the total number of carbon atoms in R1 and R2 is an integer from 5 to 40 inclusive; and (ii) as a solvent provided that the total number of carbon atoms in R1 and R2 is an integer from 5 to 20 inclusive; to certain novel compounds of formula (I) and to a process for preparing those novel compounds. | 09-04-2014 |
| 20140275605 | (Methylcyclohexyl)Toluene Isomer Mixtures,Their Production and Their Use in the Manufacture of Plasticizers - A composition is described comprising a mixture of (methylcyclohexyl)toluene isomers having the following formula: | 09-18-2014 |
| 560077000 | Producing carboxyl group by oxidation | 7 |
| 20110137069 | METHOD FOR PRODUCING BIPHENYLTETRACARBOXYLIC ACID TETRAESTER - Disclosed is a method for producing a biphenyltetracarboxylic acid ester by oxidative coupling a phthalic acid ester by using a catalyst comprising at least a palladium salt, a copper salt and a β-dicarbonyl compound in the presence of a molecular oxygen, wherein the β-dicarbonyl compound is supplied into a reaction mixture liquid intermittently at an interval of less than 30 minutes, or continuously. This method allows, in particular, the selective and economical production of an asymmetric biphenyltetracarboxylic acid tetraester such as 2,3,3′,4′-biphenyltetracarboxylic acid tetraester. | 06-09-2011 |
| 20130197261 | 3,4-DIALKYLBIPHENYLDICARBOXYLIC ACID COMPOUND, 3,4-DICARBOALKOXYBIPHENYL-3', 4'-DICARBOXYLIC ACID AND CORRESPONDING ACID ANHYDRIDES, AND PROCESSES FOR PRODUCING THESE COMPOUNDS - The present invention relates to the 3,4-Dicarboalkoxybiphenyl-3′,4′-dicarboxylic acid (including the corresponding acid anhydride) represented by the general formula (1): | 08-01-2013 |
| 20140107373 | Polyvalent Vinyl Aromatic Compound and Method for Producing Same - A polyvalent vinyl aromatic compound represented by chemical formula (4) is produced by reacting (1) a specific vinyl aromatic compound and (2) a specific vinyl compound in the presence of (3-1) a metal complex and (3-2) a percarboxylic acid or a hypervalent iodine compound so that a vinyl group derived from the vinyl compound is introduced onto a carbon atom that is adjacent to the carbon atom to which a vinyl group is bonded in the vinyl aromatic compound. (In the formula, Ar represents a monocyclic aromatic hydrocarbon group or the like; R | 04-17-2014 |
| 20140275606 | Methyl-Substituted Biphenyl Compounds, Their Production and Their Use in the Manufacture of Plasticizers - In a process for producing a methyl-substituted biphenyl compound, at least one methyl-substituted cyclohexylbenzene compound of the formula: | 09-18-2014 |
| 20140275607 | Methyl-Substituted Biphenyl Compounds, Their Production and Their Use in the Manufacture of Plasticizers - In a process for producing a methyl-substituted biphenyl compound, at least one methyl-substituted cyclohexylbenzene compound of the formula: | 09-18-2014 |
| 20150361027 | Biphenyl Esters, Their Production and Their Use in the Manufacture of Plasticizers - A biphenyl diester useful as a plasticizer having the formula (I): | 12-17-2015 |
| 20160115113 | Aerobic Oxidative Esterification of Sugar-Derived 1,4-Disubstituted Benzene for Direct Synthesis of Dimethylterephthalate - This invention relates to a dimethylterephthalate production process comprising reacting substituted furan with ethylene under cycloaddition reaction conditions and in the presence of a cycloaddition catalyst to produce a bicyclic ether, dehydrating the bicyclic ether to produce a substituted phenyl, dissolving said substituted phenyl in methanol, and oxidizing and esterifying the substituted phenyl in the presence of an oxidative esterification catalyst to form dimethylterephthalate. Importantly, the process does not include oxidizing the substituted phenyl to form terephthalic acid. | 04-28-2016 |
| 560078000 | Purification or recovery | 6 |
| 20080275267 | Plasticiser Esters - Esters produced by the catalyzed reaction of alcohols and acids or anhydrides are neutralized by treatment with an aqueous alkaline alkali metal salt solution in an amount that provides less than a stoichiometric amount of alkali metal salt in relation to the acidity of the crude ester and the amount of water present during the treatment is from 0.8 to 1.4 wt % of water based on the weight of crude ester. When using titanium as the esterification catalyst, the ester resulting from this process contains less than 0.01 ppm by weight of titanium residue, so that it is storage stable when stored in the presence of an antioxidant. | 11-06-2008 |
| 20090171113 | Ethanolysis of PET to Form DET and Oxidation Thereof - A process for ethanolysis of PET is disclosed wherein a feed comprising PET is reacted with ethanol and recovering ethylene glycol and an aromatic diethyl ester such as diethyl isophthalate and/or diethyl terephthalate. PET, or a terpolymer comprising terephthalate monomer and ethylene glycol monomers, is reacted with ethanol and ethanol, diethyl terephthalate, ethylene glycol and optionally diethyl isophthalate are recovered. Recovered diethyl components can be subjected to liquid-phase oxidation to produce aromatic carboxylic acid. Acetic acid may also produced via liquid-phase oxidation of recovered diethyl components. The aromatic carboxylic acid can be used to form polymer. | 07-02-2009 |
| 20100210867 | Addition of a Methyl Hydrogen Terephthalate Reactor to a Dimethyl Terephthalate Process - An MHT reactor is added to a DMT process to eliminate the majority of the DMT/MHT recycle back to the DMT reactor, allowing for an increase in capacity to the DMT reactors. | 08-19-2010 |
| 20110251419 | METHOD FOR REGENERATION OF RAW ESTER - The invention relates to a raw ester of an esterification reaction catalyzed by a metal-containing esterification catalyst generated by a) mixing the raw ester at a temperature T of more than 100° C. under a pressure p that is equal to or greater than the vapor pressure of water at the temperature T with an aqueous base, b) relaxing the ester-base mixture and evaporating water, c) mixing the obtained fluid phase with water forming a water-in-oil emulsion, d) distilling water out of said emulsion and e) filtering the ester. Said method results in esters having low acid value and residues accrue in easily filterable form in the solid catalyst residues. | 10-13-2011 |
| 20120041225 | KIT FOR AUTOMATED RESOLVING AGENT SELECTION AND METHOD THEREOF - The present invention provides a means for the rapid selection of optimum resolving agents and solvents, combinations and conditions to separate optical isomers. The present invention combinedly describes and automates a full lifecycle of chiral separation method development and optimization through a series of kits and procedures providing screening, automation for screening, racemate recovery, enantiomer preparation, and method optimization. | 02-16-2012 |
| 20160096798 | METHOD FOR PURIFYING DIOCTYL PHTHALATE - Disclosed is a method of reducing the ultraviolet-light absorbing properties of a composition comprising dioctyl phthalate, the method comprising (a) obtaining a composition comprising dioctyl phthalate and phthalide, wherein said composition has an absorbance of greater than 0.1 at a wavelength of about from 230 to 360 nm, (b) contacting the composition with activated carbon, silica gel, or diatomaceous earth, for a sufficient amount of time to allow the phthalide to contact the activated carbon, silica gel, or diatomaceous earth, and (c) removing the composition from the activated carbon, silica gel, or diatomaceous earth, wherein the composition obtained from step (c) has an absorbance equal to or less than about 0.1 at a wavelength of about from 230 to 360 nm and has a reduced amount of phthalide when compared with the composition from step (a). | 04-07-2016 |
| 560080000 | Ortho fused rings in acid moiety | 5 |
| 20090247782 | NOVEL POLYMERIZABLE COMPOUNDS - A novel polymerizable compound of the present invention is represented by the following general formula (I). Due to the presence of a reactive phenolic hydroxyl group at the end of the molecule, it can be reacted easily with various functional compounds and is useful as a monomer and an intermediate for various functional materials, especially as an intermediate for a polymerizable liquid crystal material. | 10-01-2009 |
| 20100274040 | 1,1'-Bi-2-Naphthol Derivatives Having (Meth)acrylate Groups - The present invention relates to 1,1′-bi-2-naphthol derivatives having (meth)acrylate groups, which can be used for preparing photocurable coating and has a refractive index of 1.53 or more. By using the present 1,1′-bi-2-naphthol derivatives, optical components with high refractive index and less light dispersion can be produced. | 10-28-2010 |
| 20120253060 | METHOD FOR PRODUCING LIQUID CRYSTAL POLYESTER - Disclosed is a method for producing a liquid crystal polyester, which includes the steps of: | 10-04-2012 |
| 20150105579 | NOVEL CRYSTALLINE COMPOUNDS FOR PHASE CHANGE INKS - Novel crystalline compounds with at least two aromatic moieties for use in the phase change inks. The crystalline compound is derived from bio-renewable materials and can be used in phase change ink compositions to impart desirable ink properties. For example, the crystalline compounds provide phase change ink compositions suitable for ink jet printing, including robust printing on coated paper substrates. | 04-16-2015 |
| 20160200662 | COMPOUNDS HAVING NEGATIVE OPTICAL DISPERSION, NEGATIVE OPTICAL DISPERSION COMPOSITION COMPRISING THE COMPOUNDS, AND OPTICALLY ANISOTROPIC BODY COMPRISING THE COMPOSITION (As Amended) | 07-14-2016 |
| 560081000 | Esterified carboxy not bonded directly to a ring | 1 |
| 560082000 | Malonates | 1 |
| 20090131708 | Method For Production of Substituted Phenylmalonate Esters, Intermediate Compounds and The Use Thereof for production of 5, 7-dihydroxy-6-(2,4,5-trifluorophenyl)-(1,2,4)triazolo(1,5-A)pyrimidines - A process for preparing substituted phenylmalonic esters of the formula I | 05-21-2009 |
| 560083000 | Halogen in acid moiety | 2 |
| 20090099387 | POTASSIUM FLUORIDE DISPERSION SOLUTION, AND PROCESS FOR PRODUCTION OF FLUORINATED ORGANIC COMPOUND USING THE SAME - A potassium fluoride dispersion essentially consisting of potassium fluoride and an aprotic organic solvent having a boiling point higher than that of methanol, which is obtainable by mixing a mixture containing potassium fluoride and 5 to 50 parts by weight of methanol per 1 part by weight of potassium fluoride with the aprotic organic solvent followed by concentrating the obtained mixture, and a process for producing a fluorine-containing organic compound comprising contacting an organic compound having at least one group capable of being substituted nucleophilically with a fluorine atom with the potassium fluoride dispersion. | 04-16-2009 |
| 20110112321 | ALKALI METAL FLUORIDE DISPERSION AND PROCESS FOR PRODUCING FLUORINE-CONTAINING ORGANIC COMPOUND USING THE SAME - An alkali metal fluoride dispersion essentially consisting of an alkali metal fluoride and an aprotic organic solvent obtainable by conducting the following Step (A), subsequently conducting the following Step (B) at least once, and then conducting the following Step(C); | 05-12-2011 |
| 560084000 | Ring in alcohol moiety | 6 |
| 560085000 | Aromatic alcohol moiety | 6 |
| 20100174105 | Production of Substituted Phenylene Aromatic Diesters - The present disclosure is directed to the production of 5-tert-butyl-3-methyl-1,2-phenylene dibenzoate and the purification thereof. Synthesis pathways for a precursor to 5-tert-butyl-3-methyl-1,2-phenylene dibenzoate are provided. The precursor is 5-tert-butyl-3-methylcatechol. | 07-08-2010 |
| 20100204506 | Production of Substituted Phenylene Aromatic Diesters and Compositions - The present disclosure provides processes for the production of substituted phenylene aromatic diesters and the resultant compositions. The processes include reacting an aromatic diol with an aromatic carboxylic acid or a derivative thereof. The aromatic diol and/or the aromatic carboxylic acid (or derivative thereof) is/are substituted. The reaction forms a substituted phenylene aromatic diester with the structure (II): | 08-12-2010 |
| 20110152564 | RESIN PRODUCTION APPARATUS AND RESIN PRODUCTION METHOD - A resin production apparatus of the present invention includes: a reactor vessel having a vessel main body which polymerizes an ingredient to produce a thermoplastic synthetic resin which solidifies at room temperature and storing the synthetic resin in the molten state, an output mechanism disposed at a bottom part of the vessel main body, which outputs the synthetic resin in the molten state, and a temperature adjustment mechanism which adjusts temperatures of the vessel main body and the output mechanism so as to maintain the molten state of the synthetic resin; a cooling mechanism arranged below the reactor vessel, which continuously cools and solidifies the synthetic resin output from the output mechanism; and a crushing mechanism which crushes the synthetic resin fed out from the cooling mechanism. | 06-23-2011 |
| 20130178644 | PROCESS FOR THE SYNTHESIS OF TAPENTADOL AND INTERMEDIATES THEREOF - The object of the present invention is a new process for the synthesis of tapentadol, both as free base and in hydrochloride form, which comprises the step of alkylation of the ketone (VII) to yield the compound (VIII), as reported in Diagram 1, with high stereoselectivity due to the presence of the benzyl group as substituent of the amino group. It was surprisingly found that this substitution shifts the keto-enol equilibrium towards the desired enantiomer and amplifies the capacity of the stereocenter present in the compound (VII) to orient the nucleophilic addition of the organometallic compound at the carbonyl towards the desired stereoisomer. This substitution thus allows obtaining a considerable increase of the yields in this step, and consequently allows significantly increasing the overall yield of the entire tapentadol synthesis process. | 07-11-2013 |
| 20140012035 | Production of Substituted Phenylene Aromatic Diesters - Synthesis pathways for a precursor to 5-tert-butyl-3-methyl-1, 2-phenylene dibenzoate are provided. The precursor is methylcatechol and/or 5-tert-butyl-3-methylcatechol. | 01-09-2014 |
| 560086000 | Esterified phenolic hydroxy | 1 |
| 20120238774 | CHARGE TRANSPORT FILM, METHOD FOR PRODUCING THE SAME, AND LIGHT-EMITTING ELEMENT AND PHOTOELECTRIC CONVERSION ELEMENT USING THE SAME - The present invention provides a charge transport film which is prepared through subjecting a coating film including at least one charge transporting agent to an atmospheric pressure plasma treatment, wherein electron transfer between the charge transport film and a substance that contacts with the charge transport film is promoted, and deterioration in performance due to diffusion and mixing or crystallization of low molecular weight components, such as a charge transporting agent, incorporated in a cured film is suppressed also in the case of film formation by a wet method, and which exhibits excellent charge transportability and stability over time; a production method with good productivity; and a light-emitting element and photoelectric conversion element equipped with the charge transport film, the atmospheric pressure plasma treatment being preferably a treatment that applies plasma, which is generated using a plasma generating apparatus and conveyed using an inert gas, to the coating film. | 09-20-2012 |
| 560088000 | Nitrogen in alcohol moiety | 1 |
| 20110190530 | Polycationic Viscoelastic Compositions - Viscoelastic compositions are disclosed herein containing an effective amount of one or more random or structurally defined polycationic quaternary ammonium compounds for controlling the viscoelasticity of the composition. In one aspect, the present technology provides polycationic quaternary ammonium compounds that comprise bis-quaternary compound. The bis-quaternary compounds of the present technology can be symmetric or dissymmetric. In another aspect, the present technology provides viscoelastic well bore treatment fluids comprising water, and at least one polycationic quaternary ammonium compound that comprises a bis-quaternary compound. In another aspect, the present technology provides polycationic carboxylates. Preferred viscoelastic compositions of the present technology maintain viscoelasticity at a temperature greater than about 80° C., preferably greater than about 100° C. or 110° C. when the amount of the one or polycationic quaternary compounds is less than about 10% by weight based on the total weight of the composition. | 08-04-2011 |
| 560089000 | Polyoxy alcohol moiety | 3 |
| 20090137836 | PROCESSES FOR PREPARING LOW-ACID POLYALKYLENE TEREPHTHALATE FROM DIOL-CAPPED PRE-POLYMER AND LINEAR OLIGOMER RECYCLATE AND USING SUCH IN THE PRODUCTION OF MACROCYCLIC POLYESTER OLIGOMER - The invention relates to a method for producing low-acid polyalkylene terephthalate from which MPO can be advantageously manufactured. In certain embodiments, low-acid polybutylene terephthalate (PBT) is prepared by reacting low molecular weight, diol-stopped PBT pre-polymer with a linear oligomer recyclate in refluxing ortho-dichlorobenzene (oDCB) solvent. The linear oligomer recyclate may be a by-product of the depolymerization/cyclization of the low-acid PBT, thereby synergistically increasing overall conversion of reactants to the MPO product, cyclic polybutylene terephthalate (cPBT). | 05-28-2009 |
| 20110004014 | Catalytic Depolymerization of Polymers Containing Electrophilic Linkages Using Nucleophilic Reagents - The disclosure relates to methods and materials useful for depolymerizing a polymer. In one embodiment, for example, the disclosure provides a method for depolymerizing a polymer containing electrophilic linkages, wherein the method comprises contacting the polymer with a nucleophilic reagent in the presence of a guanidine-containing compound. The methods and materials of the disclosure find utility, for example, in the field of waste reclamation and recycling. | 01-06-2011 |
| 20140107374 | FUNCTIONALIZED POLYETHYLENE TEREPHTHALATE POLYMERS, FUNCTIONALIZED DERIVATIVE POLYMERS OF POLYETHYLENE TEREPHTHALATE, METHODS OF MAKING AND USING SAME - The presently disclosed and claimed inventive concept(s) relates generally to the functionalized polyethylene terephthalate polymers and functionalized derivatives of PET. More particularly, but not to be construed as limiting, the presently disclosed and claimed inventive concept(s) relate to lower molecular weight functionalized digested PET materials from digesting recycled and methods of making and using same. | 04-17-2014 |
| 560096000 | Processes | 29 |
| 20090275772 | Metrod for Producing 1,2-Phenylethane Compound Using Atom Transfer Radical Coupling Reaction - An object of the present invention is to provide a method capable of producing a 1,2-phenylethane compound with extremely high yield in a short amount of time. Disclosed is a method for producing a 1,2-phenylethane compound, which comprises subjecting a compound represented by formula (I): | 11-05-2009 |
| 20090281348 | METHOD OF REGENERATING RUTHENIUM CATALYSTS SUITABLE FOR HYDROGENATION - The present invention relates to a method of regenerating a ruthenium catalyst suitable for hydrogenation, which comprises flushing the catalyst with inert gas in a regeneration step until the original activity or part of the original activity has been attained. The method is particularly useful for ruthenium catalysts which are used for the hydrogenation of aromatics. | 11-12-2009 |
| 20100056820 | Method for the production of substituted 2-aryl malonic acid esters - The present invention relates to a process for preparing substituted 2-arylmalonic esters of the general formula I | 03-04-2010 |
| 20100137630 | Manufacture of Purified Alcohols - Acetals are formed from an aldehyde hydrogenation product mixture comprising alcohols and at most | 06-03-2010 |
| 20130041174 | CATALYST FOR ALKYLATION AND PROCESS FOR PRODUCING ALKYLAROMATIC HYDROCARBON COMPOUND USING THE CATALYST - A catalyst for alkylation contains an inorganic structural material having an ion-exchange ability and a metal ion having a valency of 2 or more. The metal ion is supported on the inorganic structural material. The inorganic structural material is preferably a zeolite. The metal ion is preferably a lanthanide metal. The catalyst for alkylation imparts industrially satisfiable activity and selectivity and can be readily separated, collected and recycled. Furthermore, the process for producing an alkylaromatic hydrocarbon compound includes reacting an aromatic hydrocarbon compound and a compound having an unsaturated bond in the presence of the catalyst for alkylation. | 02-14-2013 |
| 20130345467 | PROCESSES FOR PRODUCING TEREPHTHALIC ACID AND TEREPHTHALIC ESTERS - The present invention generally relates to a condensed process for producing terephthalic acid and terephthalic esters from a dialkyl cyclohexane-2,5-di-one-1,4-dicarboxylate; a chemoselective process for preparing a substantially bicyclic-lactone-free dialkyl cyclohexane-2,5-diol-1,4-dicarboxylate; and compositions of matter prepared thereby. | 12-26-2013 |
| 20140275608 | OF REGIOSPECIFIC SYNTHESIS OF TEREPHTHALATES - A method for preparing 1,4-biscarboxylic acid esters of benzene is provided. | 09-18-2014 |
| 20150025263 | 3,4-DIALKYLBIPHENYLDICARBOXYLIC ACID COMPOUND, 3,4-DICARBOALKOXYBIPHENYL-3',4'-DICARBOXYLIC ACID AND CORRESPONDING ACID ANHYDRIDES, AND PROCESSES FOR PRODUCING THESE COMPOUNDS - 3,4-Dicarboalkoxybiphenyl-3′,4′-dicarboxylic acid represented by the general formula (1): | 01-22-2015 |
| 560098000 | Esterification of acid, salt, acid halide or anhydride with alcohol | 21 |
| 20090005587 | METHOD OF MAKING PHTHALIC ACID DIESTERS - Methods and systems for the production of phthalic acid diesters are described herein. The methods and systems incorporate the novel use of a high shear device to promote dispersion and mixing of a phthalic acid derivative with alcohol. The high shear device may allow for lower reaction temperatures and pressures and may also reduce reaction time with existing catalysts. | 01-01-2009 |
| 20100228046 | Cobalt Recovery From Cobalt Catalysed Hydroformylation Reactions - In a hydroformylation reaction, the circulation and recovery of cobalt carbonyl in a cobalt catalyst cycle using carbonylate as an intermediate and acidification thereof, is improved by supplying an aqueous sulfuric acid solution containing less than 16% wt of sulfuric acid to the carbonylate to control sulfuric acid concentration in the carbonylate/acid mixture, before accounting for any acid consuming reaction, to a value of from 2% to 10% by weight. Single step and multistage liquid/liquid extraction techniques as well as vapour/liquid extraction techniques followed by the absorption of cobalt from the vapour in an organic liquid both benefit from this improvement. | 09-09-2010 |
| 20110282092 | Lowering Nitrogen-Containing Lewis Bases In Molecular Sieve Oligomerisation - Nitrogen-containing Lewis bases act as poisons for molecular sieve catalysts used in oligomerisation reactions. Lowering their presence in the feed prior to the contacting thereof with the molecular sieve brings a significant extension of catalyst life. Thus, processes that are directed to the lowering of these poisons are provided. | 11-17-2011 |
| 20130190525 | SYNTHETIC METHODS PERTAINING TO TERT-BUTYL-BENZENE-BASED COMPOUNDS - According to some aspects, the present disclosure pertains to methods of forming dimethyl 5-tert-butylisophthalate which comprise comprising converting 5-tert-butylisophthalic acid into dimethyl 5-tert-butylisophthalate in synthesis procedures that comprises methanol and a dehydrating agent as chemical reagents. In other aspects, the present disclosure pertains to methods of forming 5-tert-butyl-1,3-bis(1-methoxy-1-methylethyl)benzene that comprise deprotonating 5-tert-butyl-1,3-bis(1-hydroxy-1-methylethyl)benzene with a Brønsted-Lowry superbase and methylating the deprotonated 5-tert-butyl-1,3-bis(1-hydroxy-1-methylethyl)benzene to form the 5-tert-butyl-1,3-bis(1-methoxy-1-methylethyl)benzene. | 07-25-2013 |
| 20130217911 | Method For Producing Acyloxy Benzoic Acids - The invention relates to a method for producing acyloxy benzoic acids of the formula (I), in which R | 08-22-2013 |
| 20130225851 | Plasticizer - The liquid volume resistivity of plasticiser esters is improved by purifying the ester with an adsorbent having a pH in the range 6 to 11. It is preferable to use a mixture of a filtration aid and an adsorbent. A plasticiser having a desirable combination of high liquid volume resistivity, low amount of light ends and low carbonyl number is obtained. | 08-29-2013 |
| 560099000 | Metal containing catalyst utilized | 15 |
| 20090105496 | REAGENTS AND METHOD FOR MEASURING HYDROXYL NUMBER IN POLYOLS - A pyridine-free esterification reagent for anhydride method to determine the hydroxyl number of polyols is provided. The reagent includes an anhydride, an oxometallic complex having a formula of MO | 04-23-2009 |
| 20100130767 | Process for Producing Esters - A process for producing esters comprises esterifying an acid or anhydride with an excess of an alcohol to produce a crude ester, recovering excess alcohol from the crude ester and recycling recovered excess alcohol to the esterification reaction together with fresh alcohol. The process is improved by controlling the ratio of the amount of recycled alcohol and the amount of fresh alcohol in dependence on the level of impurities in the recycle alcohol. Further improvements come from feed forwarding fresh alcohol analysis results and from preheating the alcohol before loading into the reactor. Preferably, ester product quality is improved by stripping the alcohol for oxygen removal prior to esterification. | 05-27-2010 |
| 20100137631 | BATCH ESTERIFICATION - The efficiency of catalysed batch esterification reactions is improved by the use of a particular temperature and pressure profile during the reaction cycle. In particular elevated pressure is maintained to prevent alcohol boil off during initial mixing and reaction of the reactants prior to any catalyst addition, and preferably the pressure is reduced rapidly after the desired reaction temperature has been reached. | 06-03-2010 |
| 20100152477 | HETEROGENEOUS ORGANOTIN CATALYSTS - Supported heterogeneous organotin catalysts of the formula X1, X2, or X3: | 06-17-2010 |
| 20100174106 | HETEROGENEOUS ORGANOTIN CATALYSTS - Supported heterogeneous organotin catalysts of the formula X1, X2, or X3: | 07-08-2010 |
| 20110251420 | METHOD FOR PRODUCING CARBOXYLIC ACID ESTERS - The invention relates to a method for producing carboxylic esters by converting a carboxylic acid or a carboxylic acid anhydride or a mixture thereof with an alcohol in a reaction system comprising one or more reactors, wherein reaction water is distilled as alcohol-water-azeotrope with the vapors, the vapors are at least partially condensed, the condensate is separated into an aqueous phase and an organic phase and said organic phase is supplied at least partially back into said reaction system. Components boiling lower than the alcohol are at least partially removed from said returned organic phase such as wherein components boiling lower than alcohol are evaporated and/or distilled off. An enrichment in the reaction system of by-products boiling lower than alcohol is avoided. Alcohol losses can be minimized by discharge currents. | 10-13-2011 |
| 20110301377 | PRODUCTION OF CARBOXYLIC ACID ESTERS BY STRIPPING WITH ALCOHOL VAPOR - The invention relates to a method for producing carboxylic acid esters by reacting a reaction mixture, comprising a carboxylic acid and/or a carboxylic acid anhydride, and an alcohol in a reaction system having one or more reactors, wherein reaction water is distilled off as an alcohol/water azeotrope with the exhaust vapor. In addition, the reaction mixture is treated with superheated alcohol vapor. The method allows the production of esters having a low acid number. | 12-08-2011 |
| 20120149935 | Plasticiser Alcohol And Production Improvement - Embodiments of the invention disclosed herein relate to a process for the production of a C | 06-14-2012 |
| 20140288325 | METHOD FOR PRODUCING DI(2-ETHYLYHEXYL) TEREPHTHALATE - Disclosed is a method for producing di(2-ethylhexyl)terephthalate (DOTP), which comprises subjecting terephthalic acid and 2-ethylhexanol to esterification in the presence of a chelate catalyst. The method of the present invention increases the reaction rate, improves the filtration efficiency of the ester product and yields DOTP with low APHA. | 09-25-2014 |
| 20150051420 | Esterification Process - Embodiments of an invention disclosed herein relate to methods to produce terephthalate esters, the methods include esterifying at least one C | 02-19-2015 |
| 20150133683 | Production of Terephthalic Acid Di-Esters Using Alcohol-Amine Promoters - The invention is directed to a process for preparing a terephthalic acid di-ester. The process includes contacting terephthalic acid with a C | 05-14-2015 |
| 20150141691 | METHOD FOR PRODUCING CARBOXYLIC ACID ESTERS - The invention relates to a method for producing carboxylic esters by converting a carboxylic acid or a carboxylic acid anhydride or a mixture thereof with an alcohol in a reaction system comprising one or more reactors, wherein reaction water is distilled as alcohol-water-azeotrope with the vapors, the vapors are at least partially condensed, the condensate is separated into an aqueous phase and an organic phase and said organic phase is supplied at least partially back into said reaction system. Components boiling lower than the alcohol are at least partially removed from said returned organic phase such as wherein components boiling lower than alcohol are evaporated and/or distilled off. An enrichment in the reaction system of by-products boiling lower than alcohol is avoided. Alcohol losses can be minimized by discharge currents. | 05-21-2015 |
| 20150307435 | Esterification Process - Embodiments of an invention disclosed herein relate to methods to produce terephthalate esters, the method including esterifying at least one C | 10-29-2015 |
| 20160075621 | INTEGRATED PROCESS FOR SIMULTANEOUS PRODUCTION OF OXO-ALCOHOLS AND PLASTICIZERS - Disclosed herein are methods and systems for the simultaneous production of oxo-alcohols comprising n-butanol, isobutanol, and 2-ethylhexanol. Also disclosed are methods and systems for simultaneous production of plasticizers using the disclosed oxo-alcohols. | 03-17-2016 |
| 20160159726 | PLASTICIZER COMPOSITION COMPRISING DI(2-ETHYLHEXYL) TEREPHTHALATE - A method for preparing an aromatic di-ester includes combining an aromatic di-acid and a linear or branched C4-C13 alcohol to form a mixture. The method also includes heating the mixture from a first temperature (T1) to a second temperature (T2) without a catalyst present in the mixture. The method further includes combining a titanium catalyst with the mixture after the mixture is at the second temperature (T2). The method further includes increasing pressure from a first pressure (P1) to a second pressure (P2) after the mixture is at the second temperature (T2). The method further includes increasing the temperature of the mixture from the second temperature (T2) to a third temperature (T3) while maintaining the second pressure (P2). | 06-09-2016 |
