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WO/2007/063757A1 |
Disclosed is a specific process for producing a high-quality/high-performance aromatic polycarbonate free from discoloration and having excellent mechanical properties from a dialkyl carbonate and an aromatic dihydroxy compound stably, i...
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WO/2007/060894A1 |
The invention aims at providing a concrete process for producing a dialkyl carbonate and a diol stably on an industrial scale of 2 tons or above and 1.3 tons or above respectively per hour with high selectivity and high productivity over...
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WO/2007/060893A1 |
The invention aims at providing a concrete process for producing a dialkyl carbonate and a diol stably on an industrial scale of 2 tons or above and 1.3 tons or above respectively per hour with high selectivity and high productivity over...
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WO/2007/050030A1 |
There is disclosed a method for manufacturing fatty acid alkyl esters from tall oil comprising the steps of a) esterifying tall oil in at least one esterification reactor in the presence of an acidic catalyst and an C1 to C8 alcohol to f...
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WO/2007/047225A1 |
A method of making a dialkyl carbonate comprises: reacting, in a reactor comprising tantalum, an alkanol, oxygen, and carbon monoxide, in the presence of a catalyst. The reaction occurs in a mixture comprising a liquid phase wherein the ...
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WO/2007/043062A1 |
The present invention provides a novel transesterification catalyst having the general formula: Zn3M2(CN)n(ROH).xZnCl2.yH2O wherein R is tertiary-butyl and M is a transition metal ion selected from Fe, Co and Cr, x varies from O to 0.5, ...
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WO/2007/034669A1 |
Disclosed is a process for production of a dialkyl carbonate and a diol from a cyclic carboante and an univalent aliphatic alcohol, in which the cyclic carbonate can be converted at a high conversion rate, the dialkyl carboante and the d...
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WO/2007/002343A2 |
Disclosed in embodiments herein is a method of synthesizing device forming monomers using N-(Vinyloxycarbonyloxy) succinimide.
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WO/2007/001757A1 |
A method for preparing an aromatic chloroformate comprising, introducing a mixture of at least one aromatic hydroxyl compound, phosgene, at least one solvent, and at least one organic base into a flow reactor to obtain a unidirectionally...
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WO/2006/109775A1 |
A process for the production of carbonic esters by reacting an alcohol with carbon dioxide in the presence of a cyclopentadienyl -metal complex represented by the general formula (I), preferably in the presence of both such a cyclopentad...
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WO/2006/077254A1 |
The invention relates to an improved catalyst for synthesizing dimethyl carbonate by reacting methanol, carbon monoxide, and oxygen in the gas phase as well as the use thereof. Said catalyst is composed of a copper-containing zeolite whi...
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WO/2006/067982A1 |
A process for producing an aromatic carbonate, characterized by continuously feeding an aliphatic carbonate represented by the following general formula (1) as a starting material, an aromatic monohydroxy compound represented by the foll...
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WO/2006/068053A1 |
Production of an aromatic carbonic ester through an ester exchange reaction between a starting material and a reactant while distilling by-product alcohols and/or by-product dialkyl carbonates off the reaction system, wherein use is made...
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WO/2006/054833A1 |
A method for preparing asymmetric linear carbonate useful as an electrolyte for lithium secondary battery is disclosed. The method comprises the steps of: carrying out transesterification of symmetric linear carbonate with linear ester c...
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WO/2006/054832A1 |
A method for preparing asymmetric linear carbonate useful as an electrolyte for lithium secondary battery is disclosed. The method comprises the steps of: removing methyl acetate by a distillation while carrying out a transesterification...
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WO/2006/051595A1 |
A process for producing muscone by methyl addition to the 1,4-conjugation of 2-cyclopentadecenone. By the process, muscone is produced in high yield not under reaction conditions including an extremely low temperature and a low concentra...
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WO/2006/043491A1 |
This invention provides a specific production process in which a high-purity diaryl carbonate usable as a starting material for a high-quality and high-performance polycarbonate using, as a starting material, a reaction mixture containin...
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WO/2006/041075A1 |
The invention aims at providing an industrially advantageous concrete process by which high-purity diaryl carbonates reduced in the content of medium- and high-boiling impurities, which are necessary for the production of high-quality an...
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WO/2006/035642A1 |
This invention provides a specific process for producing an aromatic carbonate on a commercial scale of not less than 1 ton/hr by reactive distillation using continuous multistage distillation columns having a specific structure (a conti...
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WO/2006/033291A1 |
The invention aims at providing an industrial separator which makes it possible to separate an alcohol efficiently and stably over a long time from a large amount of a low-boiling reaction mixture which is produced in subjecting a dialky...
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WO/2006/033288A1 |
The invention aims at providing a concrete process for industrial separation by which an alcohol can be efficiently and stably separated over a long time from a low-boiling reaction mixture having a specific composition which is produced...
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WO/2006/030724A1 |
This invention provides a specific method for separating on a commercial scale by-product alcohols from a large amount of low-boiling reaction mixture containing alcohols as by-products produced in mass production on a commercial scale o...
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WO/2006/027068A1 |
The invention relates to a method for producing carbonic acid esters, according to which the intermediate product obtained by reacting urea, a urea derivative or a dialkyl carbonate with a multi-functional alcohol is heated in the presen...
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WO/2006/027110A1 |
The invention relates to a method for producing polycarbonate according to the transesterification of molten mass method, by reacting at least one aromatic dihydroxyaryl compound and a diarylcarbonate in the melt, at least in the presenc...
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WO/2006/025424A1 |
This invention provides a production process of diphenyl carbonate which can produce high-purity diphenyl carbonate usable as a starting material of a high-quality and high-performance polycarbonate from a reaction mixture composed of a ...
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WO/2006/025478A1 |
This invention provides a process for producing a high-purity diaryl carbonate, characterized in that a reaction mixture containing an alkylaryl carbonate obtained by an transesterification reaction of a dialkyl carbonate with an aromati...
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WO/2006/022294A1 |
This invention provides a production process of diphenyl carbonate which can produce high-purity diphenyl carbonate usable as a starting material of a high-quality and high-performance polycarbonate from a reaction mixture composed of a ...
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WO/2006/017550A1 |
The present invention relates to an interfacial method of preparing ester-substituted diaryl carbonates. The method includes the steps of: forming a reaction mixture comprising phosgene, an ester-substituted phenol, an organic solvent, a...
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WO/2006/006568A1 |
With respect to the continuous production of an aromatic carbonate containing a diaryl carbonate as a main product, comprising providing as a raw material an alkyl aryl carbonate obtained through an ester exchange reaction between a dial...
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WO/2006/006588A1 |
A practical process for stable production of an aromatic carbonate from a dialkyl carbonate and an aromatic monohydroxy compound with high selectivity and high productivity by the use of two continuous multistage distillation columns on ...
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WO/2006/006566A1 |
With respect to the continuous production of an aromatic carbonate containing a diaryl carbonate as a main product, comprising providing as a raw material an alkyl aryl carbonate obtained through an ester exchange reaction between a dial...
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WO/2006/006585A1 |
A practical process for stable production of an aromatic carbonate containing a diaryl carbonate as a main product from a dialkyl carbonate and an aromatic monohydroxy compound with high selectivity and high productivity by the use of tw...
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WO/2006/001257A1 |
This invention provides a specific process for producing an aromatic carbonate from a dialkyl carbonate and an aromatic monohydroxy compound using a continuous multistage distillation column on a commercial scale of not less than one ton...
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WO/2006/001256A1 |
This invention provides a specific process for producing an aromatic carbonate from a dialkyl carbonate and an aromatic monohydroxy compound containing specific amounts of alcohols and aromatic carbonates using a continuous multistage di...
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WO/2005/123638A1 |
A process for producing a dialkyl carbonate and a diol, comprising (a) subjecting a cyclic carbonate and an aliphatic monohydric alcohol to transesterification in the presence of a transesterification catalyst to produce a reaction solut...
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WO/2005/123654A1 |
The invention relates to a method of obtaining polyoxygenated organic compounds. The inventive method is characterised in that it comprises the oxidation reaction of a diether, preferably an acetal, with an oxygen source, in the presence...
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WO/2005/123657A1 |
A process for producing an aromatic carbonate, characterized by comprising the following steps (I) and (II): (I) a step in which a starting material selected from the group consisting of dialkyl carbonates, alkyl aryl carbonates, and mix...
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WO/2005/123656A1 |
A compound represented by R-OC(=O)OCH3 [wherein R represents -CH(CH2F)(CH3) or -CH2CHFCH3]; a method for producing a compound represented by R-OC(=O)OCH3, characterized in that it comprises reacting a compound represented by R-OH with di...
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WO/2005/111049A1 |
A process for the production of alkyltin alkoxides which comprises subjecting at least one alkyltin compound selected from among organotin compounds having tin-oxygen-tin linkages as the starting compound and a hydroxyl compound as the r...
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WO/2005/110964A1 |
The invention relates to a novel method for producing dialkyl dicarbonates by reacting the corresponding halogenated formic acid alkyl esters with alkali or alkaline earth hydroxides and/or carbonates in the presence of water-immiscible ...
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WO/2005/107941A1 |
The invention relates to a solid basic catalyst comprising $g(a)-alumina-supported cesium fluoride CsF. The invention also relates to a method of preparing said catalyst and to the use thereof for the heterogeneous basic catalysis of che...
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WO/2005/102986A2 |
A process for the production of dialkyl carbonates from the reaction of alcohol, for example C1-C3 alcohols, with urea is disclosed wherein the water and ammonium carbamates impurities in the feed are removed in a prereactor. The water i...
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WO/2005/095323A1 |
La présente invention concerne un procédé de préparation de composé ester activateur de blanchiment. Ce procédé consiste (A) à préparer un monoester d'acide gras, (B) à fabriquer un chloroformate par réaction de ce monoester d...
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WO/2005/073162A1 |
The invention relates to a method for producing diaryl carbonates and polycarbonates, according to which dialkyl carbonate is reacted with boric acid triaryl ester, and the obtained mixture is directly re-esterified and then polycondense...
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WO/2005/066111A1 |
The invention relates to an intermediate product based on the organic carbonates and carbamates mixture and method for the production thereof. The inventive method consists in reacting a carbamide, a substituted carbamide, a carbamic aci...
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WO/2005/066110A1 |
This invention relates to a process for combined production of dialkyl carbonate and diol with low energy consumption, which comprises the synthesis of alkylene carbonate, the generation of dialkyl carbonate and diol and the recovery of ...
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WO2005000783A9 |
A method for producing an aromatic carbonate is characterized by having the following steps (1)-(4): (1) an organic metal compound and carbon dioxide are reacted, thereby obtaining a reaction mixture containing a dialkyl carbonate formed...
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WO/2005/051939A1 |
A process comprising contacting a propylene oxide feed with carbon dioxide in the presence of a suitable catalyst to obtain a reaction mixture comprising propylene carbonate in which process the propylene oxide feed comprises at least 50...
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WO/2005/040089A2 |
A method of increasing the amount of diphenylcarbonate produced per amount of catalyst consumed in a phenol carbonylation process is described. Phenolic carbonylation produces water as a reaction product which reduces the turnover number...
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WO/2005/028415A1 |
The invention relates to a method for the production of monomer organic carbonates from a mixture of organic carbonates and carbamates which are obtained by reacting urea, substituted urea, a salt or ester of carbamide acid or one of the...
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