Abstract: To provide a water/oil repellent composition whereby it is possible to obtain an article which is excellent in each of water repellency, oil repellency and heavy rain durability, a method for its production, and an article which is excellent in each of water repellency, oil repellency, heavy rain durability and texture. The water/oil repellent composition comprises a copolymer containing structural units based on a monomer (a), structural units based on a monomer (b) and structural units based on a monomer (c). Here, the monomer (a) is a compound represented by (Z—Y)nX (wherein Z is a C1-6perfluoroalkyl group, etc.; Y is a bivalent organic group, etc.; n is 1 or 2; and X is a polymerizable unsaturated group). The monomer (b) is a (meth)acrylate having no polyfluoroalkyl group and having an alkyl group with at least 12 carbon atoms. The monomer (c) is a monomer having a poly(oxypolyfluoroalkylene) chain.

Abstract: A water/oil repellent composition which comprises a copolymer (A) comprising from 40 to 95 mass % of monomer (a1) units, from 1 to 60 mass % of monomer (a2) units and from 0 to less than 5 mass % of monomer (a3) units, a copolymer (B) comprising from 40 to 91 mass % of monomer (b1) units, from 2 to 20 mass % of monomer (b2) units, from 5 to 20 mass % of monomer (b3) units, and from 2 to 20 mass % of vinyl chloride (b4) units, and a liquid medium (C), wherein monomers (a1) and (b1) are (Z—Y)nX [Z is a C1-6 polyfluoroalkyl group, etc., Y is a divalent organic group having no fluorine atom, etc., n is 1 or 2, and X is a specific group having a polymerizable unsaturated group], monomers (a2) and (b2) are vinylidene chloride or vinylidene fluoride, and monomers (a3) and (b3) are a (meth)acrylate having a saturated hydrocarbon group having at least 12 carbon atoms.

Abstract: To provide a liquid repellent composition which is excellent in liquid repellency and durability and an article having a liquid repelling film. A liquid repellent composition comprising a copolymer (I) and a copolymer (II), characterized in that the copolymer (I) containing from 65 to 95 mass % of a polymerized unit (a) (referred to as “[a1]”) and from 1 to 30 mass % of a polymerized unit (b); and the copolymer (II) containing from 25 to 80 mass % of a polymerized unit (a) (referred to as “[a2]”) and from 1 to 50 mass % of a polymerized unit (c) are contained in an amount of the copolymer (I)/the copolymer (II)=10/90 to 95/5 (mass ratio), and [a1]?[a2]?10 (mass %).

Abstract: To provide a water/oil repellent composition whereby it is possible to obtain an article which is excellent in each of water repellency, oil repellency and heavy rain durability, a method for its production, and an article which is excellent in each of water repellency, oil repellency, heavy rain durability and texture. The water/oil repellent composition comprises a copolymer containing structural units based on a monomer (a), structural units based on a monomer (b) and structural units based on a monomer (c). Here, the monomer (a) is a compound represented by (Z—Y)nX (wherein Z is a C1-6 perfluoroalkyl group, etc.; Y is a bivalent organic group, etc.; n is 1 or 2; and X is a polymerizable unsaturated group). The monomer (b) is a (meth)acrylate having no polyfluoroalkyl group and having an alkyl group with at least 12 carbon atoms. The monomer (c) is a monomer having a poly(oxypolyfluoroalkylene) chain.

Abstract: To provide a fluorinated copolymer comprising, in specific ratios, units derived from F(CF2)6CH2CH2OC(O)C(CH3)?CH2, units derived from vinyl chloride, units derived from vinylidene chloride, units derived from an alkyl (meth)acrylate having a C12-30 alkyl group, and units derived from a monomer having no fluoroalkyl group and having a cross-linkable functional group, wherein units derived from F(CF2)nCH2CH2OC(O)C(CH3)?CH2 (wherein n is an integer of from 1 to 5) are in at most a specific ratio; a process for producing such a fluorinated copolymer; a water repellent composition containing such a fluorinated copolymer; and an article treated with such a water repellent composition.

Abstract: A water/oil repellent composition which comprises a copolymer (A) comprising from 40 to 95 mass % of monomer (a1)) units, from 1 to 60 mass % of monomer (a2) units and from 0 to less than 5 mass % of monomer (a3) units, a copolymer (B) comprising from 40 to 91 mass % of monomer (b1) units, from 2 to 20 mass % of monomer (b2) units, from 5 to 20 mass % of monomer (b3) units, and from 2 to 20 mass % of vinyl chloride (b4) units, and a liquid medium (C), wherein monomers (a1) and (b1) are (Z—Y)nX [Z is a C1-6 polyfluoroalkyl group, etc., Y is a divalent organic group having no fluorine atom, etc., n is 1 or 2, and X is a specific group having a polymerizable unsaturated group], monomers (a2) and (b2) are vinylidene chloride or vinylidene fluoride, and monomers (a3) and (b3) are a (meth)acrylate having a saturated hydrocarbon group having at least 12 carbon atoms.

Abstract: It is possible to obtain a porous substrate having a water/oil repellent-treated surface and a moisture-permeable waterproofing film, which has favorable water/oil repellency and wash durability, through which penetration of a coating liquid for formation of the moisture-permeable waterproofing film is suppressed, and from which peeling of the moisture-permeable waterproofing film is suppressed. A water/oil repellent composition comprising a copolymer (A) having from 60 to 95 mass % of units based on a monomer having a RF group having at most 6 carbon atoms and from 5 to 40 mass % of units based on vinylidene chloride, a copolymer (B) having from 50 to 95 mass % of units based on a halogenated olefin and from 5 to 50 mass % of units based on a monomer having a crosslinkable functional group, and a medium (C), wherein the proportion of the copolymer (A) is from 70 to 90 mass %, and the proportion of the copolymer (B) is from 10 to 30 mass %.

Abstract: To provide a water/oil repellent composition with which an article which has favorable water/oil repellency and washing durability, and into which infiltration of a coating liquid can be suppressed, is obtained, and which presents a low environmental impact, its production method and an article having its surface treated with the composition. A water/oil repellent composition comprising a copolymer (X) having structural units based on the monomer (a) and structural units based on the monomer (b), and an aqueous medium, wherein the mass average molecular weight of the copolymer is at least 60,000, and the proportion of the structural units based on the monomer (a) is 60 to 95 mass %. Monomer (a): by (Z—Y)nX, wherein Z is a e.g. C1-6 polyfluoroalkyl group, Y is e.g. a bivalent organic group having no fluorine atom, n is 1 or 2, and X is a polymerizable unsaturated group. Monomer (b): vinyl chloride.

Abstract: To provide a water/oil repellent composition which can give water/oil repellency to a surface of an article and has excellent durability (wash durability and heavy-rain durability), a method for producing such a composition, and an article which has water/oil repellency and is less susceptible to deterioration of water/oil repellency when it is washed or in heavy rain. A water/oil repellent composition which comprises a copolymer having polymerized units derived from monomer (a), polymerized units derived from monomer (b) and polymerized units derived from monomer (c). Here, monomer (a) is a compound represented by the formula: (Z—Y)nX; wherein Z is a C1-6 perfluoroalkyl group or the like; Y is a bivalent organic group or a single bond; n is 1 or 2; and X is a polymerizable unsaturated group; monomer (b) is a (meth)acrylate having no polyfluoroalkyl group and having an C20-30 alkyl group; and monomer (c) is vinylidene chloride.

Abstract: To provide a fluorinated copolymer comprising, in specific ratios, units derived from F(CF2)6CH2CH2OC(O)C(CH3)?CH2, units derived from vinyl chloride, units derived from vinylidene chloride, units derived from an alkyl (meth)acrylate having a C12-30 alkyl group, and units derived from a monomer having no fluoroalkyl group and having a cross-linkable functional group, wherein units derived from F(CF2)nCH2CH2OC(O)C(CH3)?CH2 (wherein n is an integer of from 1 to 5) are in at most a specific ratio; a process for producing such a fluorinated copolymer; a water repellent composition containing such a fluorinated copolymer; and an article treated with such a water repellent composition.

Abstract: It is possible to obtain a porous substrate having a water/oil repellent-treated surface and a moisture-permeable waterproofing film, which has favorable water/oil repellency and wash durability, through which penetration of a coating liquid for formation of the moisture-permeable waterproofing film is suppressed, and from which peeling of the moisture-permeable waterproofing film is suppressed. A water/oil repellent composition comprising a copolymer (A) having from 60 to 95 mass % of units based on a monomer having a RF group having at most 6 carbon atoms and from 5 to 40 mass % of units based on vinylidene chloride, a copolymer (B) having from 50 to 95 mass % of units based on a halogenated olefin and from 5 to 50 mass % of units based on a monomer having a crosslinkable functional group, and a medium (C), wherein the proportion of the copolymer (A) is from 70 to 90 mass %, and the proportion of the copolymer (B) is from 10 to 30 mass %.

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: A water- and oil-repellent agent composition having a lower environmental impact to obtain articles having higher water-repellent friction durability and improved texture. The invention also provides an article treated on the surface with the water- and oil-repellent agent composition. The water- and oil-repellent agent composition includes a first fluoropolymer having structural units based on a first monomer and structural units based on a second monomer; a second fluoropolymer (excluding the first fluoropolymer) having structural units based on a third monomer; and an aqueous medium. The first monomer: compound represented by (Z—Y)nX, where 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. The second monomer: (meth)acrylate having a C18-30 alkyl group but not a polyfluoroalkyl group. The third monomer: a fluoroolefin.

Abstract: A water/oil repellent composition which comprises a copolymer having polymerized units derived from monomer (a) and polymerized units derived from monomer (b), wherein the proportion of the polymerized units derived from the monomer (b) is 30 to 80 mol % in the total of the polymerized units derived from the monomer (a) and the polymerized units derived from the monomer (b). Monomer (a) is a compound represented by the formula: (Z—Y)nX; wherein Z is a C1-6 perfluoroalkyl 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; and monomer (b) is a (meth)acrylate having no polyfluoroalkyl group and having an C20-30 alkyl group.

Abstract: To provide a water/oil repellent composition with which an article which has favorable water/oil repellency and washing durability, and into which infiltration of a coating liquid can be suppressed, is obtained, and which presents a low environmental impact, its production method and an article having its surface treated with the composition. A water/oil repellent composition comprising a copolymer (X) having structural units based on the monomer (a) and structural units based on the monomer (b), and an aqueous medium, wherein the mass average molecular weight of the copolymer is at least 60,000, and the proportion of the structural units based on the monomer (a) is 60 to 95 mass %. Monomer (a): by (Z—Y)nX, wherein Z is a e.g. C1-6 polyfluoroalkyl group, Y is e.g. a bivalent organic group having no fluorine atom, n is 1 or 2, and X is a polymerizable unsaturated group. Monomer (b): vinyl chloride.

Abstract: A water/oil repellent composition comprising a polymer having structural units based on the following monomer (a) and structural units based on the following monomer (b), and an aqueous medium containing water and the following amide solvent (I) 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 having no fluorine atom or the like, n is 1 or 2, and X is a polymerizable unsaturated group. Monomer (b): vinyl chloride. Amide solvent (I): a compound represented by R1O(CH2)r(CHR4)sC(O)NR2R3, wherein r is an integer of from 0 to 3, s is 0 or 1, R1 is a C1-3 alkyl group, each of R2 and R3 is a methyl group or the like, and R4 is a hydrogen atom or the like.

Abstract: A water and oil repellent composition having excellent durability, which can impart excellent water and oil repellency to an object, even in a process at low temperatures, and which enables water and oil repellent treatment providing a soft hand. A water and oil repellent composition which comprises, as an essential component, a copolymer containing polymerization units of the following monomer (a) and polymerization units of the following monomer (b): monomer (a): an Rf group-containing monomer which forms a photopolymer having no melting point or a melting point of at most 55° C. attributable to fine crystals derived from the Rf groups and having a glass transition point of at least 20° C. monomer (b): a monomer having no Rf group and having a cross-linkable functional group.

Abstract: To provide a water/oil repellent composition which is capable of imparting sufficient dynamic water repellency to the surface of an article, has high stability of the particles of the copolymer, and presents a low environmental impact, a method for its production, and a method for treating an article. A water/oil repellent composition comprising a copolymer (A) having structural units based on a monomer (a) having a C1-6 polyfluoroalkyl group, structural units based on a (meth)acrylate (b) having a C20-30 alkyl group and structural units based on a halogenated olefin (c), a surfactant (B), and a medium (C), wherein the medium (C) comprises water and a propylene glycol type solvent, and the amount of the propylene glycol type solvent is from 35 to 80 parts by mass per 100 parts by mass of the copolymer (A).

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.