Abstract: Provided is a method of stabilizing a perfluorodioxolane compound, which includes having a quinone compound present in a composition containing a perfluorodioxolane compound, wherein the perfluorodioxolane compound is one or more perfluorodioxolane compounds selected from the group consisting of a perfluorodioxolane compound denoted by general formula (1) and a perfluorodioxolane compound denoted by general formula (2).

Abstract: Provided is a method of stabilizing a perfluorodioxolane compound, which includes having a quinone compound present in a composition containing a perfluorodioxolane compound, wherein the perfluorodioxolane compound is one or more perfluorodioxolane compounds selected from the group consisting of a perfluorodioxolane compound denoted by general formula (1) and a perfluorodioxolane compound denoted by general formula (2).

Abstract: Provided is a method of manufacturing a trifluoropyruvyl fluoride dimer, including a reaction step of reacting hexafluoropropylene oxide and aldehyde.

Abstract: Provided is a method of manufacturing a trifluoropyruvyl fluoride dimer, including a reaction step of reacting hexafluoropropylene oxide and aldehyde.

Abstract: [Problem] To provide a fluorine-containing phosphate ester-amide which has high flame retardancy such as exhibiting flame retardant effects at a small quantity of addition, and sufficient hydrolysis resistance. [Solution] A fluorine-containing phosphate ester-amide represented by general formula (1). (In the formula, R1 and R2 are the same or different and represent a branched or linear alkyl group having 1 to 20 carbon atoms in which at least one carbon bonded to a nitrogen atom is a secondary or tertiary carbon, wherein R1 and R2 may have a substituent group selected from the group consisting of an alkoxy group, a hydroxy group, an amino group, a methyl amino group, an ethyl amino group, a dimethyl amino group, diethyl amino group and a fluorine atom. In addition, R1 and R2 may be bonded together to form a five- to eight-membered cyclic structure. X and Y are the same or different and represent a hydrogen atom or a fluorine atom, and n and m represent an integer of 1 to 6.

Abstract: Provided is a flame-retardant electrolytic capacitor which is capable of maintaining flame-retardant effect even after a prolonged period of time. This is an electrolytic capacitor comprising an anode foil that is provided with an oxide film on the surface, a cathode foil, a separator, and an electrolytic solution that contains a solute in a solvent, wherein a phosphoric acid ester amide represented by the following general formula (1) is contained in the electrolytic solution: in which n is 1 or 2, and R1 and R2 each independently represent a linear or branched alkyl group having 1 to 10 carbon atoms, and Rf represents a linear or branched fluoroalkyl group having 1 to 10 carbon atoms or a linear or branched alkyl group having 1 to 10 carbon atoms).

Abstract: A method for stabilizing a solution that contains LiPF6 by increasing thermal stability of LiPF6 without changing the structure thereof; an electrolyte solution for nonaqueous secondary batteries, which has increased thermal stability; and a nonaqueous secondary battery which has increased thermal stability. The solution containing LiPF6 contains a phosphoric acid ester amide in such an amount that the molar ratio of the phosphoric acid ester amide relative to LiPF6 is 0.001-2.

Abstract: Provided is a flame-retardant electrolytic capacitor which is capable of maintaining flame-retardant effect even after a prolonged period of time. This is an electrolytic capacitor comprising an anode foil that is provided with an oxide film on the surface, a cathode foil, a separator, and an electrolytic solution that contains a solute in a solvent, wherein a phosphoric acid ester amide represented by the following general formula (1) is contained in the electrolytic solution: in which n is 1 or 2, and R1 and R2 each independently represent a linear or branched alkyl group having 1 to 10 carbon atoms, and Rf represents a linear or branched fluoroalkyl group having 1 to 10 carbon atoms or a linear or branched alkyl group having 1 to 10 carbon atoms).

Abstract: [Problem] To provide: a method for stabilizing a solution that contains LiPF6 by increasing thermal stability of LiPF6 without changing the structure thereof; an electrolyte solution for nonaqueous secondary batteries, which has increased thermal stability; and a nonaqueous secondary battery which has increased thermal stability. [Solution] To have a solution containing LiPF6 contain a phosphoric acid ester amide represented by general formula (I) in such an amount that the molar ratio of the phosphoric acid ester amide relative to LiPF6 is 0.001-2.

Abstract: [Problem] To provide a fluorine-containing phosphate ester-amide which has high flame retardancy such as exhibiting flame retardant effects at a small quantity of addition, and sufficient hydrolysis resistance. [Solution] A fluorine-containing phosphate ester-amide represented by general formula (1). (In the formula, R1 and R2 are the same or different and represent a branched or linear alkyl group having 1 to 20 carbon atoms in which at least one carbon bonded to a nitrogen atom is a secondary or tertiary carbon, wherein R1 and R2 may have a substituent group selected from the group consisting of an alkoxy group, a hydroxy group, an amino group, a methyl amino group, an ethyl amino group, a dimethyl amino group, diethyl amino group and a fluorine atom. In addition, R1 and R2 may be bonded together to form a five- to eight-membered cyclic structure. X and Y are the same or different and represent a hydrogen atom or a fluorine atom, and n and m represent an integer of 1 to 6.

Abstract: As to a fluorine-containing phosphate used to impart flame retardancy to an electrolyte solution for a non-aqueous secondary battery, a fluorine-containing phosphate having high flame retardancy and providing high battery performance such as high-rate charge-discharge characteristics, and a method for manufacturing the same are provided. Also provided are a non-aqueous electrolyte solution and a non-aqueous secondary battery each containing the fluorine-containing phosphate. Further a fluorine-containing phosphate having a high ability to dissolve an electrolyte and capable of providing the composition of a safer electrolyte solution is provided.

Abstract: A catalyst for oxidizing 2,2,2-trifluoroethanol to form trifluoroacetaldehyde. The catalyst has a long life and achieves high conversion and selectivity. The catalyst of the present invention comprises one or more metal oxides, including at least vanadium oxide, and zirconia as a carrier.

Abstract: A process for producing a fluorine-containing acrylic acid ester represented by CH2?C(Rf)(COOR) characterized in that 1-bromo-1-perfluoroalkylethene represented by CH2?CBr—Rf, or 1,2-dibromo-1-perfluoroalkylethane represented by CH2CBr—CHBr—Rf is allowed to react with an alcohol represented by ROH in the presence of a palladium catalyst, carbon monoxide, and two or more kinds of bases. The fluorine-containing acrylic acid ester is a useful compound having wide applications in materials for pharmaceuticals and functional polymers.

Abstract: A catalyst for oxidizing 2,2,2-trifluoroethanol to form trifluoroacetaldehyde. The catalyst has a long life and achieves high conversion and selectivity. The catalyst of the present invention comprises one or more metal oxides, including at least vanadium oxide, and zirconia as a carrier.

Abstract: The present invention concerns a method for purifying/separating a 2-fluoro-3-oxoalkylcarboxylic acid ester from a reaction mixture resulting from the fluorination of a 3-oxoalkylcarboxylic acid ester. The method involves depleting the reaction mixture of a hydrogen fluoride byproduct; and subsequently, separating the 2-fluoro-3-oxoalkylcarboxylic acid ester by distillation. The 2-fluoro-3-oxoalkylcarboxylic acid ester obtained by the method of the invention is highly pure and is thus suitable for use as an intermediate for the production of pharmacological products or agricultural chemicals.

Abstract: An ?-pentafluoroethyl acrylic acid derivative represented by the general formula [I]: [wherein R represents a hydrogen atom, a non-substituted or substituted aromatic ring, or a straight or branched alkyl group having 1 to 20 carbon(s) which may have a cyclic moiety optionally substituted with at least one substituent (halogen atom, hydroxyl group, straight or branched alkoxy group having 1 to 10 carbon(s) which may have a cyclic moiety, non-substituted or substituted aromatic group)].

Abstract: A process for producing a fluorine-containing acrylic acid ester represented by CH2?C(Rf)(COOR) characterized in that 1-bromo-1-perfluoroalkylethene represented by CH2?CBr—Rf, or 1,2-dibromo-1-perfluoroalkylethane represented by CH2CBr—CHBr—Rf is allowed to react with an alcohol represented by ROH in the presence of a palladium catalyst, carbon monoxide, and two or more kinds of bases. The fluorine-containing acrylic acid ester is a useful compound having wide applications in materials for pharmaceuticals and functional polymers.

Abstract: A process for producing a 2-fluoro-3-oxoalkylcarboxylic acid ester by fluorinating 3-oxoalkylcarboxylic acid ester with a fluorine gas is provided. The process is characterized in that the concentration of 3-oxoalkylcarboxylic acid ester in the reaction mixture for fluorination is maintained at 3 wt % or higher. Also provided is a process for purifying 2-fluoro-3-oxoalkylcarboxylic acid ester characterized in that 2-fluoro-3-oxoalkylcarboxylic acid ester is produced at high yield and with less impurities by washing fluorinated 3-oxoalkylcarboxylic acid ester with 3 or more times as much water as the amount of reaction mixture. According to the processes of the present invention, not only is the generation of unwanted by-products minimized, but fluorinated 3-oxoalkylcarboxylic acid ester can be purified in an efficient manner.

Abstract: A method for producing fluorinated alcohols from fluorinated alkyl halides can produce fluorinated alcohols at high product yield and at high selectivity in a single-step reaction. The method eliminates the need to use heavy metals and other toxic compounds that are difficult to handle or process. Specifically, the method produces a fluorinated alcohol represented by the following general formula (2): Rf(A)OH??(2) wherein Rf represents a perfluoroalkyl group having 1 to 10 carbon atoms; and A represents a straight-chained or branched saturated hydrocarbon group having 3 to 10 carbon atoms. The method is characterized in that it allows a fluorinated alkyl halide represented by the following general formula (1) to react with an alkali metal salt of 4-hydroxybutyrate in a gamma-butyrolactone solvent: Rf(A)X??(1) wherein Rf and A are as defined above; and X represents a halogen atom.

Abstract: The present invention concerns a method for purifying/separating a 2-fluoro-3-oxoalkylcarboxylic acid ester from a reaction mixture resulting from the fluorination of a 3-oxoalkylcarboxylic acid ester. The method involves depleting the reaction mixture of a hydrogen fluoride byproduct; and subsequently, separating the 2-fluoro-3-oxoalkylcarboxylic acid ester by distillation. The 2-fluoro-3-oxoalkylcarboxylic acid ester obtained by the method of the invention is highly pure and is thus suitable for use as an intermediate for the production of pharmacological products or agricultural chemicals.