Abstract: An object is to provide a method for producing a fluorine-containing compound by using an easily available compound under relatively mild reaction conditions to produce a fluorine-containing compound, a fluorine-containing compound suitably used in the production method, and a fluorine-containing compound obtained by the production method. There is provided a method for producing a fluorine-containing compound, the method including: reacting a compound having a partial structure represented by the following formula (a) with a Grignard reagent in the presence of a transition metal compound. —C(—Ra)(—Rb)—CH2-L??Formula (a) where, in the formula, Ra is a fluorine atom or a fluoroalkyl group, Rb is a hydrogen atom or a fluoroalkyl group, and L is a sulfonate group.

Abstract: A substrate with a water and oil repellent layer having excellent abrasion resistance and a method for producing the substrate are provided. The substrate with a water and oil repellent layer contains a substrate, an undercoat layer formed on the surface of the substrate, and a water and oil repellent layer formed on the surface of the undercoat layer. The undercoat layer contains an oxide containing silicon and a specific element. The water and oil repellent layer is made of a hydrolytic condensation compound of a fluorinated ether compound, which is a compound represented by the formula (A1) or a compound represented by the formula (A2): Rf—O—(Rf1O)m—Rf2[—R1—C(—R2-T)a(—R3)3-a]b??(A1) [(T-R2—)a(R3—)3-aC—R1—]bRf2—O—(Rf1O)m—Rf2[—R1—C(—R2-T)a(—R3)3-a]b??(A2).

Abstract: To provide a fluorinated ether compound capable of forming a water and oil repellent layer with excellent abrasion resistance on a metal surface of a substrate, a composition, and an article provided with a water and oil repellent layer. The fluorinated ether compound of the present invention is represented by [Rf—(OX)m—O—]j1Y1—Z1[-L1-S—R11]g11[R12]g12. Rf is a perfluoroalkyl group, X is a fluoroalkylene group having at least one fluorine atom, m is an integer of at least 2, Y1 is a single bond or a (j1+1) valent linking group, and Z1 is a (g11+g12+1) valent linking group, L1 is a single bond or a divalent linking group, R11 is a hydrogen atom or a monovalent substituent, R12 is a hydrogen atom or a monovalent substituent, j1 is an integer of at least 1, g11 is an integer of at least 2, and g12 is an integer of at least 0.

Abstract: To provide a composition with which a surface layer excellent in abrasion resistance and sliding resistance can be formed, and an article. The composition of the present invention comprises a compound represented by the formula (1) and a compound represented by the formula (2), wherein the ratio of the number of moles of the group represented by —CF3 in Rf1 in the formula (1) to the total of the number of moles of the group represented by —CF2— closest to Y1 in Rf2 in the formula (1), the number of moles of the group represented by —CF2— closest to Y2 in Rf3 in the formula (2) and the number of moles of the group represented by —CF2— closest to Y3 in Rf3 in the formula (2), is from 0.001 to 0.

Abstract: To provide a substrate with a film excellent in fingerprint stain removability and sliding resistance. The substrate with a film of the present invention comprises a substrate and a film having a poly(oxyfluoroalkylene) chain disposed only on a part of region on the principal plane of the substrate.

Abstract: To provide a flame retardant non-aqueous electrolyte solution for secondary batteries, with which a lithium ion secondary battery which is less likely to undergo thermal runaway and which is excellent in the high temperature storage properties can be obtained; and a lithium ion secondary battery using the non-aqueous electrolyte solution for secondary batteries. A non-aqueous electrolyte solution for secondary batteries, comprising an electrolyte salt and a liquid composition, which contains either one or both of monofluorophosphate anions and difluorophosphate anions derived from at least part of the electrolyte salt, wherein at least a lithium salt is contained as one type of the electrolyte salt, and the liquid composition comprises at least one fluorine-containing solvent (?) selected from the group consisting of a fluorine-containing ether compound, a fluorine-containing chain carboxylic acid ester compound and a fluorine-containing chain carbonate compound, and a cyclic carboxylic acid ester compound.

Abstract: To provide a flame-retardant non-aqueous electrolyte solution for secondary batteries, with which a lithium ion secondary battery excellent in the rate properties can be obtained; and a safe lithium ion secondary battery excellent in the rate properties. A non-aqueous electrolyte solution for secondary batteries, comprising a lithium salt and a liquid composition, wherein the liquid composition comprises at least one fluorine-containing solvent (?) selected from the group consisting of a fluorine-containing ether compound, a fluorine-containing chain carboxylic acid ester compound and a fluorine-containing chain carbonate compound, and a cyclic carboxylic acid ester compound, the lithium salt contains LiPF6, and the lithium ion diffusion coefficient of the non-aqueous electrolyte solution at 25° C. is at least 1.1×10?10 m2/s.

Abstract: To provide a flame retardant non-aqueous electrolyte solution for secondary batteries, with which a lithium ion secondary battery which is less likely to undergo thermal runaway and which is excellent in the high temperature storage properties can be obtained; and a lithium ion secondary battery using the non-aqueous electrolyte solution for secondary batteries. A non-aqueous electrolyte solution for secondary batteries, comprising an electrolyte salt and a liquid composition, which contains either one or both of monofluorophosphate anions and difluorophosphate anions derived from at least part of the electrolyte salt, wherein at least a lithium salt is contained as one type of the electrolyte salt, and the liquid composition comprises at least one fluorine-containing solvent (?) selected from the group consisting of a fluorine-containing ether compound, a fluorine-containing chain carboxylic acid ester compound and a fluorine-containing chain carbonate compound, and a cyclic carboxylic acid ester compound.

Abstract: A non-aqueous electrolyte solution for secondary batteries, comprising a lithium salt (total number of moles of lithium atoms: NLi) and a liquid composition, wherein the liquid composition comprises a specific fluorinated solvent (?) and a cyclic carboxylic acid ester compound (total number of moles: NA), and may contain a specific compound (?) (total number of moles: NB), the content of the fluorinated solvent (?) is from 40 to 80 mass %, NA/NLi is from 1.5 to 7.0, and (NA+NB)/NLi is from 3 to 7.0; and, a lithium ion secondary battery employing such a non-aqueous electrolyte solution for secondary batteries.

Abstract: A non-aqueous electrolyte solution for secondary batteries, comprising a lithium salt (total number of moles of lithium atoms: NLi) and a liquid composition, wherein the liquid composition comprises a specific fluorinated solvent (?) and a cyclic carboxylic acid ester compound (total number of moles: NA), and may contain a specific compound (?) (total number of moles: NB), the content of the fluorinated solvent (?) is from 40 to 80 mass %, NA/NLi is from 1.5 to 7.0, and (NA+NB)/NLi is from 3 to 7.0; and, a lithium ion secondary battery employing such a non-aqueous electrolyte solution for secondary batteries.