Abstract: To achieve a method for producing a carbonic ester at a high yield by a simple process while suppressing formation of by-products, for example, a method for producing an aliphatic carbonic ester. The above problem is solved by a method for producing a carbonic ester, the method including a carbonic ester formation reaction in which an alcohol and carbon dioxide are reacted in the presence of an aromatic nitrile compound and a catalyst, wherein the water content in the alcohol used in the carbonic ester formation reaction is 0.10% by mass or less.

Abstract: Realized is a method for restoring the activity of a catalyst for producing a carbonate ester by a simple technique with no use of a complicated step such as calcining or the like to allow the catalyst to be reusable, and a method for producing a carbonate ester at a high yield by use of the catalyst thus regenerated. The above-described problem has been solved by a method for regenerating a catalyst containing CeO2, the catalyst being usable for a carbonate ester generation reaction of generating a carbonate ester from carbon dioxide and an alcohol, the method comprising (a) a separation step of separating the catalyst as a crude catalyst from a reaction solution of carbon dioxide and the alcohol; and (b) a catalyst processing step of washing the crude catalyst with a washing alcohol to provide a purified catalyst.

Abstract: Provided is a method of manufacturing an aromatic polycarbonate resin composition with high fluidity, particularly during low shear, and a good color. An aromatic polycarbonate resin composition including: an aromatic polycarbonate resin that has a structural unit expressed by general formula (1); a aliphatic cyclic carbonate that is expressed by general formula (2) and is included at a ratio of 10 ppm-10,000 ppm; an aromatic cyclic carbonate that is expressed by general formula (3); and at least one compound selected from the group consisting of compounds expressed by general formulas (4)-(6), wherein the total content of the aromatic cyclic carbonate and the compound(s) expressed by general formula(s) (4)-(6) is 0.1 mass %-2.0 mass % by bisphenol A-converted value.

Abstract: Provided is a dialkyl carbonate production method that enables a dialkyl carbonate to be produced in a simple manner and in a short reaction time and enables easy processing of by-products. This dialkyl carbonate production method involves generation reaction of a carbonate ester through reaction between carbon dioxide and an alcohol represented by formula (1), wherein the generation reaction of a carbonate ester is performed in the presence of a carbodiimide compound represented by formula (2) (R1-R3 in the formula are as described in the description of the present application).

Abstract: Provided is a method for regenerating an aromatic amide compound into a corresponding aromatic nitrile compound, the method realizing a dehydration reaction of providing a target compound selectively at a high yield, with generation of a by-product being suppressed. Also provided is a method for producing an aromatic nitrile compound that decreases the number of steps of the dehydration reaction and significantly improves the reaction speed even at a pressure close to normal pressure. In addition, the above-described production method is applied to a carbonate ester production method to provide a method for producing a carbonate ester efficiently. The above-described methods are realized by a method for producing an aromatic nitrile compound including a dehydration reaction of dehydrating an aromatic amide compound, in which the dehydration reaction uses, as a solvent, any of 1,2-dimethoxybenzene, 1,3-dimethoxybenzene and 1,3,5-trimethoxybenzene.

Abstract: Provided are a method for producing carbonate esters, and a catalytic structure for producing carbonate esters, whereby solid catalyst powder formation and detachment are suppressed and superior carbonate ester reaction efficiency is yielded when a catalytic structure constituted by a sufficient quantity of a cerium-oxide-containing solid catalyst supported on a substrate is used. The method for producing carbonate esters includes reacting a monohydric alcohol and carbon dioxide in the presence of a catalytic structure and a hydrating agent. The catalytic structure includes a substrate and a catalytic layer that is formed on at least a portion of the surface of the substrate and contains a solid catalyst and an inorganic binder. The solid catalyst contains cerium oxide. The supported quantity of the solid catalyst is 15 g/m2 to 200 g/m2, inclusive. The inorganic binder contains silica and/or alumina.

Abstract: Provided is a manufacturing method for a high molecular weight aromatic polycarbonate resin that has superior fluidity and for which a good color and a sufficiently high molecular weight can be achieved. A manufacturing method for a high molecular weight aromatic polycarbonate resin includes: a step in which a dialcohol compound expressed by general formula (1) and a catalyst are mixed to obtain a catalyst composition; a step in which the obtained catalyst composition is kept in a molten state, and is mixed with an aromatic polycarbonate prepolymer within ten hours after obtaining the catalyst composition, to obtain a prepolymer mixture; and a high molecular weight achievement step in which the obtained prepolymer mixture is heat-treated under reduced pressure conditions to obtain a high molecular weight aromatic polycarbonate resin.

Abstract: To achieve a method for producing a carbonic ester at a high yield by a simple process while suppressing formation of by-products, for example, a method for producing an aliphatic carbonic ester. The above problem is solved by a method for producing a carbonic ester, the method including a carbonic ester formation reaction in which an alcohol and carbon dioxide are reacted in the presence of an aromatic nitrile compound and a catalyst, wherein the water content in the alcohol used in the carbonic ester formation reaction is 0.10% by mass or less.

Abstract: Provided is a high molecular weight aromatic polycarbonate resin manufacturing method that suppresses the occurrence of heterogeneous structures and can achieve a sufficiently high molecular weight. A high molecular weight aromatic polycarbonate resin manufacturing method including: a step in which a dialcohol compound expressed by general formula (1) and a catalyst are mixed to obtain a catalyst composition; a step in which the obtained catalyst composition is transferred to a prepolymer mixing tank via a transfer pipe, with a transfer period of 10 hours or less; a step in which the transferred catalyst composition and an aromatic polycarbonate prepolymer are mixed in the prepolymer mixing tank to obtain a prepolymer mixture; and a high molecular weight achievement step in which the obtained prepolymer mixture is heat-treated under reduced pressure conditions to obtain a high molecular weight aromatic polycarbonate resin.

Abstract: A high molecular weight aromatic polycarbonate resin manufacturing method that can achieve good quality and sufficiently high molecular weight includes: a step in which a dialcohol compound expressed by general formula (1) and a catalyst are mixed to obtain a catalyst composition; a step in which the obtained catalyst composition is transferred to a prepolymer mixing tank via a transfer pipe; a step in which the transferred catalyst composition and an aromatic polycarbonate prepolymer are mixed in the prepolymer mixing tank, under a pressure that is greater than or equal to the vapor pressure of the dialcohol compound at the temperature of the prepolymer mixing tank and is less than or equal to 5 MPa, to obtain a prepolymer mixture; and a high molecular weight achievement step in which the obtained prepolymer mixture is heat-treated under reduced pressure conditions to obtain a high molecular weight aromatic polycarbonate resin.

Abstract: Provided is a method for regenerating an aromatic amide compound into a corresponding aromatic nitrile compound, the method realizing a dehydration reaction of providing a target compound selectively at a high yield, with generation of a by-product being suppressed. Also provided is a method for producing an aromatic nitrile compound that decreases the number of steps of the dehydration reaction and significantly improves the reaction speed even at a pressure close to normal pressure. In addition, the above-described production method is applied to a carbonate ester production method to provide a method for producing a carbonate ester efficiently. The above-described methods are realized by a method for producing an aromatic nitrile compound including a dehydration reaction of dehydrating an aromatic amide compound, in which the dehydration reaction uses, as a solvent, any of 1,2-dimethoxybenzene, 1,3-dimethoxybenzene and 1,3,5-trimethoxybenzene.

Abstract: Provided is a method for regenerating an aromatic amide compound into a corresponding aromatic nitrile compound, the method realizing a dehydration reaction of providing a target compound selectively at a high yield, with generation of a by-product being suppressed. Also provided is a method for producing an aromatic nitrile compound that decreases the number of steps of the dehydration reaction and significantly improves the reaction speed even at a pressure close to normal pressure. In addition, the above-described production method is applied to a carbonate ester production method to provide a method for producing a carbonate ester efficiently. The above-described methods are realized by a method for producing an aromatic nitrile compound including a dehydration reaction of dehydrating an aromatic amide compound, in which the dehydration reaction uses, as a solvent, any of 1,2-dimethoxybenzene, 1,3-dimethoxybenzene and 1,3,5-trimethoxybenzene.

Abstract: Realized is a method for restoring the activity of a catalyst for producing a carbonate ester by a simple technique with no use of a complicated step such as calcining or the like to allow the catalyst to be reusable, and a method for producing a carbonate ester at a high yield by use of the catalyst thus regenerated. The above-described problem has been solved by a method for regenerating a catalyst containing CeO2, the catalyst being usable for a carbonate ester generation reaction of generating a carbonate ester from carbon dioxide and an alcohol, the method comprising (a) a separation step of separating the catalyst as a crude catalyst from a reaction solution of carbon dioxide and the alcohol; and (b) a catalyst processing step of washing the crude catalyst with a washing alcohol to provide a purified catalyst.

Abstract: Provided is a manufacturing method for a high molecular weight aromatic polycarbonate resin that has superior fluidity and for which a good color and a sufficiently high molecular weight can be achieved. A manufacturing method for a high molecular weight aromatic polycarbonate resin includes: a step in which a dialcohol compound expressed by general formula (1) and a catalyst are mixed to obtain a catalyst composition; a step in which the obtained catalyst composition is kept in a molten state, and is mixed with an aromatic polycarbonate prepolymer within ten hours after obtaining the catalyst composition, to obtain a prepolymer mixture; and a high molecular weight achievement step in which the obtained prepolymer mixture is heat-treated under reduced pressure conditions to obtain a high molecular weight aromatic polycarbonate resin.

Abstract: Provided is a method for regenerating an aromatic amide compound into a corresponding aromatic nitrile compound, the method realizing a dehydration reaction of providing a target compound selectively at a high yield with generation of a by-product being suppressed. Also provided is a method for producing an aromatic nitrile compound that decreases the number of steps of dehydration reaction and significantly improves the reaction speed at a pressure close to normal pressure. Furthermore, the above-described production method is applied to a carbonate ester production method to provide a method for producing carbonate ester efficiently. The above-described objects are achieved by a method for producing an aromatic nitrile compound including a dehydration reaction of dehydrating an aromatic amide compound, in which the dehydration reaction uses diphenylether.

Abstract: Provided is a method for regenerating an aromatic amide compound into a corresponding aromatic nitrile compound, the method realizing a dehydration reaction of providing a target compound selectively at a high yield, with generation of a by-product being suppressed. Also provided is a method for producing an aromatic nitrile compound that decreases the number of steps of the dehydration reaction and significantly improves the reaction speed even at a pressure close to normal pressure. In addition, the above-described production method is applied to a carbonate ester production method to provide a method for producing a carbonate ester efficiently. The above-described methods are realized by a method for producing an aromatic nitrile compound including a dehydration reaction of dehydrating an aromatic amide compound, in which the dehydration reaction uses, as a solvent, any of 1,2-dimethoxybenzene, 1,3-dimethoxybenzene and 1,3,5-trimethoxybenzene.

Abstract: Provided is a method for regenerating an aromatic amide compound into a corresponding aromatic nitrile compound, the method realizing a dehydration reaction of providing a target compound selectively at a high yield with generation of a by-product being suppressed. Also provided is a method for producing an aromatic nitrile compound that decreases the number of steps of dehydration reaction and significantly improves the reaction speed at a pressure close to normal pressure. Furthermore, the above-described production method is applied to a carbonate ester production method to provide a method for producing carbonate ester efficiently. The above-described objects are achieved by a method for producing an aromatic nitrile compound including a dehydration reaction of dehydrating an aromatic amide compound, in which the dehydration reaction uses diphenylether.

Abstract: A high molecular weight aromatic polycarbonate resin manufacturing method that can achieve good quality and sufficiently high molecular weight includes: a step in which a dialcohol compound expressed by general formula (1) and a catalyst are mixed to obtain a catalyst composition; a step in which the obtained catalyst composition is transferred to a prepolymer mixing tank via a transfer pipe; a step in which the transferred catalyst composition and an aromatic polycarbonate prepolymer are mixed in the prepolymer mixing tank, under a pressure that is greater than or equal to the vapor pressure of the dialcohol compound at the temperature of the prepolymer mixing tank and is less than or equal to 5 MPa, to obtain a prepolymer mixture; and a high molecular weight achievement step in which the obtained prepolymer mixture is heat-treated under reduced pressure conditions to obtain a high molecular weight aromatic polycarbonate resin.

Abstract: Provided is a high molecular weight aromatic polycarbonate resin manufacturing method that suppresses the occurrence of heterogeneous structures and can achieve a sufficiently high molecular weight. A high molecular weight aromatic polycarbonate resin manufacturing method including: a step in which a dialcohol compound expressed by general formula (1) and a catalyst are mixed to obtain a catalyst composition; a step in which the obtained catalyst composition is transferred to a prepolymer mixing tank via a transfer pipe, with a transfer period of 10 hours or less; a step in which the transferred catalyst composition and an aromatic polycarbonate prepolymer are mixed in the prepolymer mixing tank to obtain a prepolymer mixture; and a high molecular weight achievement step in which the obtained prepolymer mixture is heat-treated under reduced pressure conditions to obtain a high molecular weight aromatic polycarbonate resin.

Abstract: Provided is an aromatic polycarbonate resin composition with high fluidity, particularly during low shear, and a good color. An aromatic polycarbonate resin composition including: an aromatic polycarbonate resin that has a structural unit expressed by general formula (1); a aliphatic cyclic carbonate that is expressed by general formula (2) and is included at a ratio of 10 ppm-10,000 ppm; an aromatic cyclic carbonate that is expressed by general formula (3); and at least one compound selected from the group consisting of compounds expressed by general formulas (4)-(6), wherein the total content of the aromatic cyclic carbonate and the compound(s) expressed by general formula(s) (4)-(6) is 0.1 mass %-2.0 mass % by bisphenol A-converted value.