Abstract: Provided are a curable composition and an application thereof. The curable composition contains: a compound A having a polymerizable group (a) and an oxyfluoroalkylene group; a polymerization initiator; and a compound B having a polymerizable group different from the polymerizable group (a). The polymerizable group (a) in the compound A is at least one selected from the group consisting of a vinylphenyl group, a vinylphenyloxy group, a vinylbenzyloxy group, a vinyloxy group, a vinyloxycarbonyl group, a vinylamino group, a vinylaminocarbonyl group, a vinylthio group, an allyloxy group, an allyloxycarbonyl group, an allylamino group, an allylaminocarbonyl group, an allylthio group, an epoxy group, and an epoxycycloalkyl group.

Abstract: To provide a method for surface modification of a fluororesin, that enables graft polymerization at a lower temperature than a conventional method. A method for surface modification of a fluororesin, which comprises reacting a fluororesin with a radical reactive compound in the presence of an organometallic compound.

Abstract: The present invention relates to a method for producing a 1,3-dioxolane compound represented by formula 1, the method containing step (a), in which hexafluoroacetone monohydrate is brought into contact with a metal fluoride, step (b), in which fluorine gas is brought into contact, and step (c), in which an olefin compound represented by formula 2 is brought into contact. In formulae 1 and 2, X1 to X4 each independently represent a hydrogen atom, fluorine atom, chlorine atom, or trifluoromethyl group.

Abstract: The present invention relates to a method for producing a 1,3-dioxolane compound represented by formula 1, the method containing step (a), in which hexafluoroacetone monohydrate is brought into contact with a metal fluoride, step (b), in which fluorine gas is brought into contact, and step (c), in which an olefin compound represented by formula 2 is brought into contact. In formulae 1 and 2, X1 to X4 each independently represent a hydrogen atom, fluorine atom, chlorine atom, or trifluoromethyl group.

Abstract: Provided is a fluorinated ether compound capable of imparting excellent antifouling properties such as oil-based ink repellency, fingerprint stain removability, to a hard coating layer; a composition for forming a hard coating layer, and an article having an antifouling hard coating layer formed from the composition. The fluorinated ether compound has either a poly(oxyperfluoroalkylene) chain having a repeated unit that includes a C1-2 oxyperfluoroalkylene group and a C3-6 oxyperfluoroalkylene group, bonded to each other, or a poly(oxyperfluoroalkylene) chain having a repeated unit that contains a C4 oxyperfluoroalkylene group and a different oxyperfluoroalkylene group, bonded to each other, a linking group bonded to a first terminal of the poly(oxyperfluoroalkylene) chain, and at least one (meth)acryloyl group bonded to the linking group.

Abstract: To provide a fluorinated ether compound, a fluorinated ether composition and a coating liquid, whereby it is possible to form a surface-treated layer which has high initial water/oil repellency and which is excellent in abrasion resistance and fingerprint stain removability, and a substrate having a surface-treated layer and a method for its production. A fluorinated ether compound which has a poly(oxyperfluoroalkylene) chain (??) having a C4 oxyperfluoroalkylene unit (?) and an oxyperfluoroalkylene unit (?) other than the unit (?) and which has a hydrolysable silyl group on at least one terminal of the poly(oxyperfluoroalkylene) chain (??) via a linking group.

Abstract: To provide a fluorinated ether compound, a fluorinated ether composition and a coating liquid, capable of forming a surface layer which has high initial water/oil repellency and which is excellent in abrasion resistance, fingerprint stain removability, lubricity and uniformity, as well as a substrate having such a surface layer, and a method for its production. A substrate having a surface layer formed of a fluorinated ether compound represented by D1-Rf1—O—CH2—(CmF2mO)n-A (D1 is CF3— or CF3—O—; Rf1 is a C1-20 fluoroalkylene group containing at least one hydrogen atom, etc.; m is 1 to 6; n is 1 to 200; A is —CaF2a—B—CbH2b—SiLcR3-c; B is —CgH2gO—, —ChH2hO—C(?O)NH—, etc.; L is a hydrolysable group; R is a monovalent hydrocarbon group, etc.; a is 1 to 5; b is 1 to 10; c is 1 to 3; g is 1 to 5; and h is 1 to 5) or a fluorinated ether composition containing the compound; and a method for its production.

Abstract: To provide a fluorinated ether compound, a fluorinated ether composition and a coating liquid, whereby it is possible to form a surface-treated layer which has high initial water/oil repellency and which is excellent in abrasion resistance and fingerprint stain removability, and a substrate having a surface-treated layer and a method for its production. A fluorinated ether compound which has a poly(oxyperfluoroalkylene) chain ((??)n) made of at least two units (??) linked to one another, and which has a hydrolysable silyl group on at least one terminal of the chain ((??)n) via a linking group, wherein each unit (??) is a poly(oxyperfluoroalkylene) group comprising one to three groups (?) made of at least one type of a C1-2 oxyperfluoroalkylene group and one to three groups (?) made of at least one type of a C3-6 oxyperfluoroalkylene group.

Abstract: To provide a fluorinated ether compound, a fluorinated ether composition and a coating liquid, capable of forming a surface layer which has high initial water/oil repellency and which is excellent in abrasion resistance, fingerprint stain removability, lubricity and uniformity, as well as a substrate having such a surface layer, and a method for its production. A substrate having a surface layer formed of a fluorinated ether compound represented by D1-Rf1—O—CH2—(CmF2mO)n-A (D1 is CF3— or CF3—O—; Rf1 is a C1-20 fluoroalkylene group containing at least one hydrogen atom, etc.; m is 1 to 6; n is 1 to 200; A is —CaF2a—B—CbH2b—SiLcR3-c; B is —CgH2gO—, —ChH2hO—C(?O)NH—, etc.; L is a hydrolysable group; R is a monovalent hydrocarbon group, etc.; a is 1 to 5; b is 1 to 10; c is 1 to 3; g is 1 to 5; and h is 1 to 5) or a fluorinated ether composition containing the compound; and a method for its production.

Abstract: To provide a fluorinated ether compound capable of imparting excellent antifouling properties (oil-based ink repellency, fingerprint stain removability) to a hard coating layer, etc., a composition for forming a hard coating layer, containing such a compound, and an article having an antifouling hard coating layer formed from such a composition.

Abstract: To provide a copolymer which can impart sufficient dynamic water repellency, after air-drying water repellency and friction durability to a surface of an article, and which has low impact on the environment, a method for producing the same, a water repellent composition and an article excellent in dynamic water repellency, after air-drying water repellency and friction durability.

Abstract: To provide a fluorinated copolymer and a water/oil repellent composition having adequate water/oil repellency, excellent washing durability and low environmental impact. A fluorinated copolymer comprising units (A) derived from a macromonomer (a) which has, on average, at least two units (X) derived from 2-perfluorohexylethyl (meta)acrylate or the like, units (B) derived from a monomer (b) which has no fluoroalkyl group and no cross-linkable functional group and of which the glass transition temperature, when formed into a homopolymer, is from 50 to 150° C., and units (C) derived from a monomer (c) which has a cross-linkable functional group and no fluoroalkyl group, and a water/oil repellent composition containing such a fluorinated copolymer.

Abstract: To provide a fluorinated copolymer and a water/oil repellent composition, whereby adequate water/oil repellency and excellent dynamic water repellency are obtainable and environmental impact is low. A fluorinated copolymer comprising units (A1) derived from a macromonomer wherein the average polymerization degree of e.g. 2-perfluorohexylethyl acrylate is from 20 to 30, and units (B) derived from a monomer (b) which has no fluoroalkyl group and no cross-linkable functional group and of which the glass transition temperature, when formed into a homopolymer, is from 50 to 150° C., wherein the average polymerization degree of the macromonomer per one molecule of the fluorinated copolymer is at least 1, and a water/oil repellent composition containing such a fluorinated copolymer.

Abstract: To provide a fluorinated ether compound, a fluorinated ether composition and a coating liquid, whereby it is possible to form a surface-treated layer which has high initial water/oil repellency and which is excellent in abrasion resistance and fingerprint stain removability, and a substrate having a surface-treated layer and a method for its production. A fluorinated ether compound which has a poly(oxyperfluoroalkylene) chain ((??)n) made of at least two units (??) linked to one another, and which has a hydrolysable silyl group on at least one terminal of the chain ((??)n) via a linking group, wherein each unit (??) is a poly(oxyperfluoroalkylene) group comprising one to three groups (?) made of at least one type of a C1-2 oxyperfluoroalkylene group and one to three groups (?) made of at least one type of a C3-6 oxyperfluoroalkylene group.

Abstract: To provide a fluorinated ether compound, a fluorinated ether composition and a coating liquid, whereby it is possible to form a surface-treated layer which has high initial water/oil repellency and which is excellent in abrasion resistance and fingerprint stain removability, and a substrate having a surface-treated layer and a method for its production. A fluorinated ether compound which has a poly(oxyperfluoroalkylene) chain (??) having a C4 oxyperfluoroalkylene unit (?) and an oxyperfluoroalkylene unit (?) other than the unit (?) and which has a hydrolysable silyl group on at least one terminal of the poly(oxyperfluoroalkylene) chain (??) via a linking group.

Abstract: A fluorinated block copolymer having Rf groups with at most 6 carbon atoms, and a surface treatment agent containing such a copolymer, whereby a coating film excellent in both static liquid repellency and dynamic liquid repellency can be formed. The fluorinated block copolymer comprises a fluorinated moiety (A) having units (a) derived from a specific fluorinated monomer and a non-fluorinated moiety (B) having units (b) derived from a non-fluorinated monomer, wherein to all units, the proportion of the above units (a) is from 15 to 40 mol %, and the proportion of the above units (b) is from 60 to 85 mol %; a process for its production; and a surface treatment agent containing the fluorinated block copolymer.

Abstract: To provide an oil repellent waterproof air-permeable filter of which environmental burden is small and which has an excellent liquid repellency to ketone solvents and ester solvents, and its production process. An oil repellent waterproof air-permeable filter comprising a substrate having a continuous porous structure and a coating material covering the substrate and containing a fluoropolymer having a perfluoroalkyl group, wherein the fluoropolymer has constituent units based on an acrylate having a chlorine atom at an ? position and a C1-6 perfluoroalkyl group, and the proportion of said constituent units is from 40 to 100 mass % in the total constituent units. A process for producing an oil repellent waterproof air-permeable filter, treating the substrate with an oil repellent waterproof composition containing a medium and the coating material and removing the medium.

Abstract: To provide an oil repellent copolymer capable of forming an oil repellent film which is excellent in durability. An oil repellent copolymer characterized by comprising a repeating unit (A) having a polyfluoroalkyl group, a repeating unit (B) having a fluorescent functional group, and a repeating unit (C) having an ester bond other than an ester bond derived from acrylic acid, and/or a hydroxyl group.

Abstract: To provide a water/oil repellent composition which is capable of imparting sufficient dynamic water repellency and post-air-drying water repellency to the surface of an article and which presents a low environmental impact, a method for its production and a method for treating an article. A water/oil repellent composition which comprises a copolymer having structural units based on the following monomer (a) and structural units based on the following monomer (b) and having a mass average molecular weight of at least 40,000, and a medium, is used. Monomer (a): a compound represented by (Z—Y)nX, wherein Z is a C1-6 polyfluoroalkyl group or the like, Y is a bivalent organic group or the like, n is 1 or 2, and X is a polymerizable unsaturated group. Monomer (b): an olefin, a homopolymer of which has a glass transition temperature of from ?50° C. to 50° C.

Abstract: A water/oil repellent composition which imparts sufficient dynamic water repellency and post-air-drying water repellency to a surface of an article and has a low environmental impact; a method for producing the composition; and a method of treating an article. The water/oil repellent composition contains: a copolymer which has a mass average molecular weight of at least 40,000 and includes structural units based on monomer (a), monomer (b), and monomer (c); and a medium. Monomer (a) is a compound represented by (Z—Y)nX, wherein Z is a C1-6 polyfluoroalkyl group, Y is a bivalent organic group, n is 1 or 2, and X is a polymerizable unsaturated group. Monomer (b) is an olefin, a homopolymer of which has a glass transition temperature of at most 50° C. Monomer (c) is a (meth)acrylate having no polyfluoroalkyl group and having a C12-30 alkyl group.