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JP10045675 |
To provide a method by which a carbonic acid ester can be produced at a lower cost. This method for producing a carbonic acid ester is to feed a carboxylic acid ester formed as a by-product in a latter-stage reaction as at least a part o...
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JP10045680 |
To separate and recover a catalytic system in high space-time yield without deactivating a catalyst according to a mild method by treating a reactional solution produced by an oxidative carbonylation of an aromatic hydroxy compound under...
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JP10045674 |
To enable a high content of a diaryl carbonate having a large tilt angle in a reactional mixture obtained in a short reactional time and carry out the isolation of a diaryl carbonate on the downstream side with the minimal energy consump...
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JP10045677 |
To provide a method for producing an aromatic carbonate from an aromatic hydroxy compound in high yield and high selectivity by using a catalyst better in handleability and simplicity than those of a conventional palladium-based catalyst...
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JP10045678 |
To produce the subject compound useful as an additive, etc., in the field of polyurethane final products, etc., by respectively carrying out a reaction of a polyether glycol with dimethyl carbonate and transesterification of the polyethe...
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JP10043596 |
To easily reactivate a deactivated catalyst system contg. a metal of the platinum group by treating the catalyst system with a specified amt. of an oxidizing agent in a liq. phase at a specified temp., removing the surplus oxidizing agen...
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JP10036322 |
To enable to effectively and continuously produce dimethyl carbonate by converting ethylene glycol by-produced on the transesterification reaction of ethylene carbonate with methanol into the ethylene carbonate in the reaction system and...
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JP10036297 |
To obtain dimethyl carbonate and ethylene glycol by transesterification between ethylene carbonate and methanol in the presence of a specified catalyst. This method comprises (1) 1st step of separating the distillate from the catalytic r...
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JP10036323 |
To enable to profitably and continuously obtain a diaryl carbonate in good selectivity and high activity and in a high space time yield without damaging a catalyst by reacting an aromatic hydroxy compound with carbon monoxide and oxygen ...
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JP10036321 |
To easily obtain an aromatic carbonate useful as a raw material of a polycarbonate without any loss of an aliphatic carboxylate by using a specific aliphatic carboxylate in an ester interchange reaction with an aliphatic carbonate. The o...
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JP10017529 |
To continuously obtain the subject compound by reacting an aromatic hydroxyl compound with phosgene in the presence of a heterogeneous catalyst and removing phosgene still existing from an exhaust gas flow by returning the exhaust gas to...
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JP10005586 |
To provide granular activated carbon formed bodies having ≤300μm average particle diameter and excellent in wear resistance and mechanical strength, a carrier consisting of the formed bodies and a catalyst. The objective granular acti...
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JP10005593 |
To provide a catalyst for synthesis of carbonic ester having high activity and high selectivity, less liable to reduce its activity over a long term and suppressing the formation of a corrosive compd., a method for regenerating the catal...
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JP10007623 |
To provide a method for efficiently producing bis(trichloromethyl) carbonate industrially useful as a substitute of phosgene. In this method for producing bis(trichloromethyl) carbonate from dimethyl carbonate by irradiating dimethyl car...
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JP2735737 |
PURPOSE: To produce the subject high-purity dicarbonic acid dialkyl ester in a high yield. CONSTITUTION: An alkaline metal salt of a carbonic acid alkyl ester, e.g. sodium t-butyl carbonate is reacted with an acid halide compound e.g. to...
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JP2735467 |
PURPOSE: To obtain the subject compd. useful as a monomer for preparation of polymers with a high purity in high yield by reacting phenolate with a compd. selected from acid anhydrides, acid chlorides, halogen-substd. alkly, etc., in the...
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JP10001460 |
To provide a method for continuously and efficiently producing an aromatic carbonate by performing a transesterification of an aromatic carboxylic acid ester with an aliphatic carbonate and/or an aromatic aliphatic carbonate. A raw mater...
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JP10000301 |
To improve the reaction efficiency of an equilibrium reaction by increasing tower temperature with bottom temperature being maintained, that is, lessening the temperature difference between the bottom and the top of a tower. A reacting d...
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JP10001459 |
To provide a method for producing an aromatic carbonate from an aromatic hydroxy compound in high yield and selectivity by using an extremely economical catalyst compared to a conventional platinum-based or palladium- based catalyst. Thi...
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JP2733035 |
PURPOSE: To enable efficient production of carbonate which is useful as a starting substance for polycarbonate by ester-interchanging reaction between a carboxylate and an aromatic hydroxy compound followed by ester-interchanging reactio...
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JP2733036 |
PURPOSE: To provide a method for efficiently and continuously producing a carbonic acid ester by transesterifying a carboxylic acid ester with a raw material carbonic acid ester in the presence of a catalyst and successively taking out a...
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JP09328453 |
To readily and simply obtain an asymmetrical chain carbonic acid ester, by subjecting two kinds of symmetrical chain carbonic acid esters to a disproportionate reaction in the presence of a specific catalyst. Two kinds of symmetrical cha...
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JP09328454 |
To obtain the subject compound in a short time in high yield by reacting a carbonic acid monotertiary butyl monoalkali metal salt with an aromatic sulfonyl halide under a specific condition. A carbonic acid monotertiary butyl monoalkali ...
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JP09308801 |
To provide a reaction distilling apparatus to which a relatively complex reaction in which at least two stages of an equilibrium reaction are combined is applicable, and a reaction distilling method which can perform the reaction efficie...
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JP09301931 |
To provide a method for producing a diaryl carbonate, capable of easily and efficiently recovering and reutilizing an aromatic heterocyclic nitrogen-containing compound of catalyst and capable of efficiently obtaining the highly pure dia...
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JP09295959 |
To safely obtain a diaryl carbonate useful as a raw material for polycarbonate from a diaryl oxalate in high reaction rate and selectivity without using highly toxic phosgene. A diaryl carbonate of formula II is produced by the decarbony...
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JP09278689 |
To provide a method for efficiently producing dimethyl carbonate and ethylene glycol from methanol and ethylene carbonate continuously and simultaneously. (a) Ethylene carbonate and methanol are continuously fed to a reactor having a dis...
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JP09278713 |
To efficiently produce an aromatic carbonic acid ester by completely suppressing nucleus halogenation of an aromatic hydroxyl compound. In this method for producing an aromatic carbonic acid ester by reacting an aromatic hydroxy compound...
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JP09278716 |
To efficiently produce an aromatic carbonic acid ester such as diphenyl carbonate useful as a raw material for a polycarbonate, etc., while controlling formation of by-products, by suppressing nucleus halogenation of an aromatic hydroxy ...
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JP09278714 |
To provide a process for producing a diaryl carbonate having low aryl chloroformate content. This process for the production of a diaryl carbonate by reacting an aromatic monohydroxy compound with phosgene in the presence of a nitrogen-c...
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JP09278715 |
To efficiently produce an aromatic carbonic acid ester such as diphenyl carbonate useful as a raw material for a polycarbonate, etc., by suppressing formation of a by-product difficult to distill. An aromatic carbonic acid ester is react...
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JP09255630 |
To obtain an aliphatic carbonic acid diester in a high yield and a high selectivity by reacting a urea and an aliphatic alcohol in the presence of a specific catalyst without using phosgene or CO gas having a high toxicity. This method f...
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JP09255629 |
To suppress the generation of an oxidative by-product and achieve a good selectivity by carrying out the reaction in the presence of a specific compound when producing an aromatic carbonic acid ester from an aromatic hydroxy compound. Wh...
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JP09255628 |
To readily produce a diaryl carbonate useful as a raw material for producing a polycarbonate at a sufficient rate of reaction by using a diaryl oxalate as a raw material with out using strongly toxic phosgene. A diaryl oxalate is heated ...
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JP09249617 |
To produce a dialkyl dicarbonate using an easy-to-bauble alkyl alcohol and alkali metal carbonate, as starting substance. An alkyl alcohol such as t-butanol is reacted with an alkali metal carbonate under pressure by carbon dioxide to pr...
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JP09241219 |
To easily obtain aromatic carbonic esters in a sufficiently high reaction rate without the need of operation to remove byproducts. A dialkyl carbonic ester of the formula, R-OCOO-R (R is a ≤3C alkyl) is reacted with a higher fatty acid...
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JP09241217 |
To obtain diaromatic and/or aliphatic-aromatic carbonate compound(s) useful as e.g. a raw material for polycarbonates in high yield. This compound, for example, a diaromatic carbonate of formula I (Ar1 and Ar2 are each a monovalent aroma...
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JP09241373 |
To obtain a polycarbonate resin without using phosgene by producing a diaryl carbonate by oxidative carbonylation of an arom. hydroxy compd. and then producing a polycarbonate by transesterification thereof with an arom. dihydroxy compd....
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JP09239270 |
To obtain a carboxylic acid derivative at a high selection rate and a high yield through an eliminable group-exchange reaction by forming a catalyst of the chemical compounds of the group III elements of the periodic table. This catalyst...
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JP09241218 |
To obtain diaromatic and/or aliphatic-aromatic carbonate compound(s) useful as e.g. a raw material for polycarbonates in high yield. This compound, for example, a diaromatic carbonate of formula I (Ar1 and Ar2 are each a monovalent aroma...
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JP09235252 |
To obtain an alkylene carbonate in a high yield, useful as a raw material for an organic solvent, a synthetic fiber treating material, a medicine, an alkylene glycol, etc., by using a catalyst having a high activity. This alkylene carbon...
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JP09234373 |
To obtain a catalyst low in the corrosiveness of a reaction soln. used in the production of carbonic ester and reduced in the deterioration of catalytic activity by supporting metal copper, a metal copper compd. or a copper complex compd...
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JP09227463 |
To mildly separate the subject compounds economically and industrially under reproducible conditions in high space-time yield from a reaction liquor resulted from oxidative carbonylation of an aromatic hydroxy compound. (A) A diaryl carb...
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JP09221436 |
To obtain a dialkyl carbonate and dial in high conversion and selectivity by the reaction of a cyclic carbonate with an aliphatic monoalcohol under specified conditions. The dialkyl carbonate and diol are obtained by reaction of a cyclic...
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JP09208530 |
To efficiently obtain an aliphatic carbonic acid diester under mild reaction conditions in a short time by reacting alcohols with carbon dioxide in the presence of an organic base and a sulfonic acid ester compound. When (A) an alcohol o...
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JP09202751 |
To efficiently obtain di-t-butyl dicarbonate useful as e.g. an amino group protective agent with a simple operation in high purity and yield by reaction of a mono-t-butyl monoalkali metal carbonate with a phosgene compound in the presenc...
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JP09202750 |
To efficiently obtain a mono-t-butyl monoalkali metal carbonate useful as e.g. an amino group protective agent in high purity and yield by reaction between an alkali metal t-butoxide and carbon dioxide in the presence of an organic solve...
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JP09194437 |
To obtain a carbonic diester by a controlled continuous distillation so as to have quality esp. suitable for producing a polycarbonate through melt transesterification process. The objective purified carbonic diester is obtained by conti...
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JP09194436 |
To continuously obtain phenyl methyl carbonate in high conversion and productivity and in minimal energy consumption. The objective phenyl methyl carbonate is obtained continuously by using phenol, dimethyl carbonate and a transesterific...
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JP09194435 |
To continuously obtain dialkyl carbonates and diols in high reactional ratios, yields and selectivity. A continuous multistage distillation column is continuously fed with a 1st feedstock composed of dialkyl carbonates and aliphatic mono...
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