Abstract: A fluoropolymer of a monomer (I) represented by the general formula (I), wherein a content of a polymerization unit (I) derived from the monomer (I) is 50% by mass or more based on all polymerization units constituting the fluoropolymer: CX2?CX—O—Rf—SO3M??General formula (I) wherein X is independently F or CF3; Rf is a fluorine-containing alkylene group having 1 to 40 carbon atoms or a fluorine-containing alkylene group having 2 to 100 carbon atoms and having an ether bond or a keto group; and M is —H, a metal atom, —NR74, imidazolium optionally having a substituent, pyridinium optionally having a substituent, or phosphonium optionally having a substituent, wherein R7 is H or an organic group. Also disclosed are an aqueous solution and coating composition containing the fluoropolymer.

Abstract: An object of this invention is to provide a simple method for producing sulfur tetrafluoride. The object is achieved by a method for producing sulfur tetrafluoride, comprising step A of reacting a fluorinated halogen compound with sulfur chloride, the fluorinated halogen compound being represented by formula: XFn, wherein X is chlorine, bromine, or iodine; and n is a natural number of 1 to 5.

Abstract: A method for producing a fluoropolymer which includes polymerizing a fluoromonomer in an aqueous medium in the presence of a surfactant to provide a fluoropolymer, the surfactant being represented by the general formula (1): CR1R2R4—CR3R5—X-A, wherein R1 to R5 are each H or a monovalent substituent, with the proviso that at least one of R1 and R3 represents a group represented by the general formula: —Y—R6 and at least one of R2 and R3 represents a group represented by the general formula: —X-A or a group represented by the general formula: —Y—R6; and A is the same or different at each occurrence and is —COOM, —SO3M, or —OSO3M. Also disclosed is a surfactant for polymerization represented by the general formula (1), a method for producing a fluoropolymer using the surfactant, a composition including a fluoropolymer and the surfactant and a molded body including the composition.

Abstract: The present disclosure addresses the problem of providing a method for purifying a halogen-containing (meth)acrylic acid ester, the method being capable of removing an alcohol to a high degree.

Abstract: The present disclosure addresses the problem of providing a method for purifying an acrylic acid ester compound. This problem can be solved by a method for purifying a compound represented by formula (1) (wherein R1 and R2 are the same as or different and each represent an alkyl group, a fluoroalkyl group, an aryl group optionally having one or more substituent groups, a halogen atom, or a hydrogen atom, R3 is an alkyl group, a fluoroalkyl group, or an aryl group optionally having one or more substituent groups, and X is a fluoroalkyl group or a halogen atom), the method including step A of distilling composition A containing (a) the compound represented by formula (1), (b) an alcohol, and (c) a salt so as to obtain a concentrate containing the compound represented by formula (1).

Abstract: A novel branched fluorine-containing compound represented by formula (1): wherein L represents a predetermined carbon-containing linker moiety; Rf, in each occurrence, is the same or different and represents fluoroalkyl optionally having at least one ether bond; Y, in each occurrence, is the same or different and represents a predetermined divalent linking group or a bond; RY, in each occurrence, is the same or different and represents hydrogen or an organic group; L represents an (n1+n2)-valent carbon-containing linker moiety having at least one carbon atom; n1 represents a number greater than or equal to 1; n2 represents a number greater than or equal to 1; n1+n2 is a number from 3 to 6; X, in each occurrence, is the same or different and represents a divalent linking group or a bond; A, in each occurrence, is the same or different and represents -ArSO3M or the like; M, in each occurrence, is the same or different and represents hydrogen, —NR4, or a metal salt; and R represents hydrogen or a C1-4 organi

Abstract: A method for producing a fluoropolymer which includes polymerizing a fluoromonomer in an aqueous medium in the presence of a surfactant to provide a fluoropolymer, the surfactant being represented by the general formula (1): CR1R2R4—CR3R5—X-A, wherein R1 to R5 are each H or a monovalent substituent, with the proviso that at least one of R1 and R3 represents a group represented by the general formula: —Y—R6 and at least one of R2 and R5 represents a group represented by the general formula: —X-A or a group represented by the general formula: —Y—R6; and A is the same or different at each occurrence and is —COOM, —SO3M, or —OSO3M. Also disclosed is a surfactant for polymerization represented by the general formula (1), a method for producing a fluoropolymer using the surfactant and a composition including a fluoropolymer and the surfactant.

Abstract: The problem to be solved by the present invention is to provide a novel method for producing a difluoromethylene compound, in particular, a simple method for producing a difluoromethylene compound. This problem is solved by a method for producing a difluoromethylene compound (I) containing at least one —CF2— moiety, the method comprising step A of allowing IF5 and a disulfide compound (III) of the formula: RA—S—S—RA (wherein RA, in each occurrence, independently represents aryl optionally having at least one substituent or alkyl optionally having at least one substituent) to act on a carbonyl compound (II) containing at least one —C(O)— moiety.

Abstract: An object of this invention is to provide a simple method for producing sulfur tetrafluoride. The object is achieved by a method for producing sulfur tetrafluoride, comprising step A of reacting a fluorinated halogen compound with sulfur chloride, the fluorinated halogen compound being represented by formula: XFn, wherein X is chlorine, bromine, or iodine; and n is a natural number of 1 to 5.

Abstract: An object of this invention is to provide a simple method for producing sulfur tetrafluoride. The object is achieved by a method for producing sulfur tetrafluoride, comprising step A of reacting a fluorinated halogen compound with sulfur chloride, the fluorinated halogen compound being represented by formula: XFn, wherein X is chlorine, bromine, or iodine; and n is a natural number of 1 to 5.

Abstract: The present disclosure provides, for example, a method that can produce a fluorolactone compound from hexafluoropropylene oxide or the like in a single step. The present disclosure relates to a method for producing a compound represented by formula (1): wherein two R1 are the same and each is a fluorine atom or a fluoroalkyl group, the method comprising step A of reacting a compound represented by formula (2): wherein R1 is as defined above, with a compound represented by formula (3): wherein R31, R32, and R33 are the same or different and each is a hydrogen atom or an alkyl group, or two of them are optionally linked to each other to form a ring optionally having one or more substituents, and a compound represented by formula (4-1) or the like: wherein R41, R42, R43, and R44 are the same or different and each is a hydrogen atom ox an alkyl group, or two of them are optionally linked to each other to form a ring optionally having one or more substituents.

Abstract: The present disclosure provides, for example, a method that can produce a fluorolactone compound from hexafluoropropylene oxide or the like in a single step.

Abstract: The problem to be solved by the present invention is to provide a novel method for producing a difluoromethylene compound, in particular, a simple method for producing a difluoromethylene compound. This problem is solved by a method for producing a difluoromethylene compound (I) containing at least one —CF2— moiety, the method comprising step A of allowing IF5 and a disulfide compound (III) of the formula: RA—S—S—RA (wherein RA, in each occurrence, independently represents aryl optionally having at least one substituent or alkyl optionally having at least one substituent) to act on a carbonyl compound (II) containing at least one —C(O)— moiety.

Abstract: A novel branched fluorine-containing compound represented by formula (1): wherein L represents a predetermined carbon-containing linker moiety; Rf, in each occurrence, is the same or different and represents fluoroalkyl optionally having at least one ether bond; Y, in each occurrence, is the same or different and represents a predetermined divalent linking group or a bond; RY, in each occurrence, is the same or different and represents hydrogen or an organic group; L represents an (n1+n2)-valent carbon-containing linker moiety having at least one carbon atom; n1 represents a number greater than or equal to 1; n2 represents a number greater than or equal to 1; n1+n2 is a number from 3 to 6; X, in each occurrence, is the same or different and represents a divalent linking group or a bond; A, in each occurrence, is the same or different and represents -ArSO3M or the like; M, in each occurrence, is the same or different and represents hydrogen, —NR4, or a metal salt; and R represents hydrogen or a C1-4 organi

Abstract: A novel branched fluorine-containing compound represented by formula (1): (Rf—Yn1LX-A)n2??(1) wherein L represents a predetermined carbon-containing linker moiety; Rf, in each occurrence, is the same or different and represents fluoroalkyl optionally having at least one ether bond; Y, in each occurrence, is the same or different and represents a predetermined divalent linking group or a bond; RY, in each occurrence, is the same or different and represents hydrogen or an organic group; L represents an (n1+n2)-valent carbon-containing linker moiety having at least one carbon atom; n1 represents a number greater than or equal to 1; n2 represents a number greater than or equal to 1; n1+n2 is a number from 3 to 6; X, in each occurrence, is the same or different and represents a divalent linking group or a bond; A, in each occurrence, is the same or different and represents —ArSO3M or the like; M, in each occurrence, is the same or different and represents hydrogen, —NR4, or a metal salt; and R represents hydroge

Abstract: A method for producing a fluoropolymer, which includes polymerizing a fluoromonomer in an aqueous medium in the presence of a surfactant to provide a fluoropolymer, wherein the surfactant is a carboxylic acid type hydrocarbon-containing surfactant.

Abstract: A method for producing a fluoropolymer which includes polymerizing a fluoromonomer in an aqueous medium in the presence of a surfactant to provide a fluoropolymer, the surfactant being represented by the general formula (1): CR1R2R4—CR3R5—X-A, wherein R1 to R5 are each H or a monovalent substituent, with the proviso that at least one of R1 and R3 represents a group represented by the general formula: —Y—R6 and at least one of R2 and R5 represents a group represented by the general formula: —X-A or a group represented by the general formula: —Y—R6; and A is the same or different at each occurrence and is —COOM, —SO3M, or —OSO3M. Also disclosed is a surfactant for polymerization represented by the general formula (1), a method for producing a fluoropolymer using the surfactant and a composition including a fluoropolymer and the surfactant.

Abstract: The problem to be solved by the present invention is to provide a novel method for producing a difluoromethylene compound. This problem is solved by a method for producing a difluoromethylene compound containing a —CF2— moiety, the method comprising step A of mixing: a) a carbonyl compound containing a —C(O)— moiety; b) optionally an amine; c) a fluoride represented by the formula: MF, wherein M represents a Group 1 element of the periodic table; d) a halogenated fluorine compound represented by the formula: XFn, wherein X represents chlorine, bromine, or iodine, and n is a natural number of 1 to 5; and e) sulfur chloride.

Abstract: A novel branched fluorine-containing compound represented by formula (1): (Rf—Y?n1L?X-A)n2??(1) wherein L represents a predetermined carbon-containing linker moiety; Rf, in each occurrence, is the same or different and represents fluoroalkyl optionally having at least one ether bond; Y, in each occurrence, is the same or different and represents a predetermined divalent linking group or a bond; RY, in each occurrence, is the same or different and represents hydrogen or an organic group; L represents an (n1+n2)-valent carbon-containing linker moiety having at least one carbon atom; n1 represents a number greater than or equal to 1; n2 represents a number greater than or equal to 1; n1+n2 is a number from 3 to 6; X, in each occurrence, is the same or different and represents a divalent linking group or a bond; A, in each occurrence, is the same or different and represents —ArSO3M or the like; M, in each occurrence, is the same or different and represents hydrogen, —NR4, or a metal salt; and R represents hydr

Abstract: The problem to be solved by the present invention is to provide a novel method for producing a difluoromethylene compound. This problem is solved by a method for producing a difluoromethylene compound containing a —CF2— moiety, the method comprising step A of mixing: a) a carbonyl compound containing a —C(O)— moiety; b) optionally an amine; c) a fluoride represented by the formula: MF, wherein M represents a Group 1 element of the periodic table; d) a halogenated fluorine compound represented by the formula: XFn, wherein X represents chlorine, bromine, or iodine, and n is a natural number of 1 to 5; and e) sulfur chloride.