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JP2002338525 |
To promote a reaction for oxycarbonylating and facilitate recovery of respective components in the reaction for oxycarbonylating an aromatic hydroxy compound in the presence of carbon monoxide, oxygen and a catalyst.This method for produ...
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JP2002338523 |
To provide a method by which a reaction for forming a diaryl carbonate is made to more efficiently proceed than a conventional method.This method for producing the diaryl carbonate comprises converting a mixture containing an aromatic hy...
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JP2002338524 |
To provide a method by which a reaction for forming a diaryl carbonate is made to more efficiently proceed than a conventional method.This method for producing the diaryl carbonate comprises feeding a mixture of carbon monoxide with oxyg...
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JP2002322130 |
To obtain a purified diphenyl carbonate usable as a raw material for a less-colored polycarbonate by reducing the total chlorine of an acidic polymerization inhibitory substance derived from chlorine to 20 ppb or below.The method for pro...
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JP3363516 |
PURPOSE: To provide a method for simultaneously producing dialkyl carbonates and glycols which are industrially extremely important from an alkylene carbonate and alcohols by using a heterogeneous catalyst in a high conversion rate and s...
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JP3363517 |
PURPOSE: To provide a method for simultaneously producing dialkyl carbonates and glycols which are industrially extremely important from a carbonic acid ester of a glycol and a monohydric alcohol in a high conversion rate and selectivity...
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JP2002308804 |
To produce a diol of high purity having high ultraviolet transmissivity without lowering a yield in a method for producing a dialkyl carbonate and the diol using a cyclic carbonate and an aliphatic monohydric alcohol as a raw material.In...
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JP2002302468 |
To provide a method for recycling a mother liquor containing a catalyst to a reactor for producing a diarylcarbonate without causing inactivation of the catalyst in a method for collecting the catalyst from a diarylcarbonate- containing ...
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JP2002226434 |
To provide a two stage interfacial polycondensation process for producing a carboxylic acid diaryl ester in a good yield and in a good purity.This process for producing the carboxylic acid diaryl ester by an interfacial polycondensation ...
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JP2002212141 |
To provide a catalyst that can economically and efficiently produce an aromatic carbonate by reaction between an aromatic hydroxy compound, carbon monoxide and molecular oxygen with high catalytic activity, high selectivity and prolonged...
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JP2002212135 |
To provide a method for synthesizing a (substituted) aliphatic, alicyclic or araliphatic chloroformate by a reaction of phosgene, diphosgene and/or triphosgene with a corresponding alcohol.The reaction is carried out under a pressure of ...
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JP2002194022 |
To provide a method for purifying a (meth)acrylate ester wherein a coloration causing material can be removed by an efficient and easy method and to obtain a (meth)acrylate ester having a small amount of the coloration causing material a...
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JP2002193890 |
To provide a method for producing a high-purity carboxylic acid diaryl ester in an excellent yield achieving a reduced environmental pollution and a low content of organic substances in the drainage.This method for continuously producing...
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JP2002193891 |
To provide a method for producing a carboxylic acid diaryl ester having a low chlorine content, especially few amount of by-product, particularly a low urethane content.This method for continuously producing the carboxylic acid diaryl es...
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JP2002193892 |
To provide a method for producing a high-purity carbonate, with which impurities such as a very small amount of alcohols, ethers, etc., in the carbonate are extremely removed.This method for producing the high-purity carbonate is charact...
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JP2002167359 |
To provide a catalyst of high activity and selectivity and a method of reaction to use the above catalyst which enable to produce economically and effectively an aromatic carbonate by reacting an aromatic hydroxy compound, carbon monoxid...
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JP3314970 |
PURPOSE: To produce dihydroxy compounds and carbonic acid ester by spliting polycarbonates continuously. CONSTITUTION: Polycarbonate resin and monohydroxy compound are reacted in a distillation column in the presence of transesterificati...
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JP3310061 |
PURPOSE: To control reaction temperature by simple equipment and simple operations. CONSTITUTION: In an exothermic reaction which is conducted in a liquid phase between a liquid reactive component and a vapor reactive component, a gas of...
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JP3305066 |
PURPOSE: To produce the subject compound useful as a raw material for a transparent resin producible by an easily controllable polymerization process and having high surface strength and excellent heat-resistance, etc., without using a l...
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JP2002128741 |
To provide a method for separating dimethylcarbonate from reaction liquid obtained through transesterification between an alkylene carbonate and methanol.The reaction liquid obtained through the transesterification is continuously suppli...
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JP2002128744 |
To obtain a nonionic surfactant having good hydrolytic stability and high biodegradability.This surfactant is represented by general formula (1) [wherein, R1 denotes a chain hydrocarbon group; AO denotes an oxyalkylene group; X denotes H...
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JP2002128740 |
To produce a chloroformic acid phenyl ester compound in high yield by using a method having excellent safety and operationality.The chloroformic acid phenyl ester compound is produced by reacting a phenolic compound with phosgene while a...
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JP2002105029 |
To provide a method capable of inexpensively and industrially advantageously producing a formylcyclopropanecarboxylic acid ester in high yield.This method for producing a formylcyclopropanecarboxylic acid ester expressed by general formu...
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JP2002097172 |
To provide an efficient method for producing di-t-butyldicarbonate.There is disclosed a method for producing di-t-butyldicarbonate featured by that when di-t-butyldicarbonate is produced by reacting a metal t-butyl carbonate with methane...
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JP2002053526 |
To reactivate a solid catalyst comprising a platinum group metal, a platinum group metal compound or a platinum group metal-containing complex supported on a support used for reacting an aromatic hydroxy compound with carbon monoxide and...
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JP2002053543 |
To provide a method for producing a mixed acid anhydride from a carboxylic acid and a carboxylic acid-activating agent in the presence of an organic base, comprising adding the carboxylic acid and the organic base to a solution containin...
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JP2002053657 |
To provide a method by which a polycarbonate having excellent performances can be produced with good reproducibility according to a polycondensing reaction of a diaryl carbonate obtained by a decarbonylating reaction of a diaryl oxalate ...
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JP2002047250 |
To provide an industrially suitable method for producing a diaryl carbonate, preventing the activity of a catalyst from decreasing and capable of continuously producing the diaryl carbonate in a high selectivity and a good efficiency in ...
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JP2002045704 |
To provide an effective method for efficiently recovering a phosphonium salt catalyst from a reaction liquid in the production of carbonic acid diester from oxalic acid diester.An organic polar solvent is added to a reaction mixture, con...
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JP2002047251 |
To provide a method for purifying a diaryl carbonate obtained by performing a decarbonylation reaction of a diaryl oxalate, containing low impurity content, especially capable of reducing the discoloration of the product carbonate and a ...
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JP3273059 |
PURPOSE: To obtain urethanes and carbonates useful in the production of a polymer, etc., in an efficient and safe manner by allowing an amine to react with CO2 in the presence of an N-contg. compd. such as an amidine and allowing the res...
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JP2002020351 |
To provide a method for efficiently and stably recovering heat in the production of a diaryl carbonate from a dialkyl carbonate and an aromatic hydroxy compound.This method for recovering the heat on the production of the diaryl carbonat...
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JP2002012576 |
To provide a method for efficiently producing a dialkyl, carbonate from CO, O2 and an alcohol.This method for producing the dialkyl carbonate is characterized in that when producing the dialkyl carbonate by using the carbon monoxide, the...
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JP2002012577 |
To provide a method for efficiently producing a dialkyl carbonate from CO, O2 and an alcohol.This method for producing the dialkyl carbonate is characterized in that when producing the dialkyl carbonate by using the carbon monoxide, the ...
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JP2002012578 |
To provide a method for efficiently producing a dialkyl carbonate from CO, O2 and an alcohol.This method for producing the dialkyl carbonate is characterized in that when producing the dialkyl carbonate by using the carbon monoxide, the ...
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JP2002012575 |
To provide a method for efficiently producing a dialkyl carbonate from CO, O2 and an alcohol.When producing the dialkyl carbonate by using the carbon monoxide, the oxygen and the alcohol as starting materials, a catalyst comprising (i) a...
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JP2001354623 |
To provide a method for effectively utilizing a by-produced ester of allophanic acid in the method for producing a dialkyl carbonate from urea and an alkyl alcohol.This method for producing the dialkyl carbonate represented by general fo...
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JP2001354624 |
To provide a method for readily and stably feeding urea in the method for producing a dialkyl carbonate from the urea and an alkyl alcohol.This method for feeding the urea comprises regulating the temperature of a feeding liquid so as to...
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JP2001348364 |
To provide a method for producing aromatic carbonates characterized as (1) changing a reflux ratio in a distillation process during the reaction to rare the energy consumed in the distillation and (2) needing no large-scale production pl...
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JP2001335540 |
To provide an effective production method of a high-quality chloroformic acid aryl ester by reaction of a hydroxy group-containing aryl compound with phosgene, capable of obtaining high-purity products with a slight amount of by-product ...
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JP2001318088 |
To provide a method of quantitative analysis for an unstable intermediate of which the standard substance does not exist.When the factor of an atomic group is designated by f, a response from an analyzer by r, the number of unstable inte...
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JP2001316332 |
To recover an intermediate and a by-product as raw materials, when a dialkyl carbonate is produced from an alkylene carbonate and an alcohol by a transesterification reaction.An alkyl hydroxyalkyl carbonate of intermediate is decomposed ...
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JP2001302588 |
To provide a method for efficiently and stably producing halogenated carbonate compound granules excellent in workability, processability and heat resistance. This method for producing halogenated carbonate compound granules comprises th...
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JP2001302589 |
To provide a new ester capable of giving the corresponding polymer which affords a resist material sensitive to high-energy beams, excellent in sensitivity, resolution and etching resistance, and thus useful in fine processing by electro...
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JP2001288148 |
To recover and re-utilize platinum group metal or a platinum group compound catalyst in a process for producing an aromatic carbonate represented by the formula (I) R-O-CO-O-R (wherein R is selected from a substituted or unsubstituted 6-...
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JP2001288149 |
To separate and recover a diaryl carbonate by selective crystallization of the diaryl carbonate from a mixed solution (A) consisting essentially of the diaryl carbonate and an aromatic hydroxy compound. A diaryl carbonate is selectively ...
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JP2001247520 |
To provide a method of producing a desired carbonate compound in a high selectivity without causing problems of environmental contamination and without passing through complex steps.This method of producing a carbonate compound comprises...
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JP2001247518 |
To provide a process of producing diaryl carbonate from an aromatic monohydroxy compound and phosgene by using a catalyst comprising an aromatic nitrogen-containing heterocyclic compound, in which the diaryl carbonate can be produced at ...
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JP2001247519 |
To provide a method of producing a carbonate in an industrially advantageous manner, in which decomposition reaction of a catalyst by by- produced water and hydrolysis reaction (reverse reaction) are suppressed and, a desired carbonate c...
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JP3229657 |
PURPOSE: To obtain a solid catalyst for production of a carbonic acid ester, having high activity, long catalytic life and high corrosion resistance. CONSTITUTION: Copper (I) halide such as copper (I) chloride or a copper (I) halide and ...
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