Abstract: To provide a fluorinated ether compound, a fluorinated ether composition and a coating liquid that are able to form a surface layer which is excellent in water/oil repellency, abrasion resistance, fingerprint stain removability, lubricity and outer appearance, and an article having such a surface layer. A fluorinated ether compound represented by A1-O—(Rf1O)m1-Q1-[C(O)N(R1)]p1—R11—C[—R12—SiR13n1X13-n1]3, wherein A1 is a C1-20 perfluoroalkyl group; Rf1 is a fluoroalkylene group having no branched structure; m1 is an integer from 2 to 210; Q1 is a single bond or a fluoroalkylene group having no branched structure; R1 is a hydrogen atom, etc.; p1 is 0 or 1; R11 is a single bond, an alkylene group, etc.; R12 is an alkylene group, etc.; R13 is a monovalent hydrocarbon group, etc.; X1 is a hydrolyzable group; and n1 is an integer of from 0 to 2.

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: Processes for producing a fluorinated ether compound are provided by which fluorinated ether compound capable of imparting excellent water/oil repellency, to a substrate surface or a hard coat layer can be easily produced in high yield. A process comprising reacting Rf(CF2)a—CF2OC(?O)Rf4 or Rf(CF2)a—C(?O)X1 with HN(—R1CH?CH2)2 to obtain Rf(CF2)a—C(?O)N(—R1CH2?CH2)2 and a process comprising obtaining the above product and reacting the product with HSiR2nL3?n to obtain Rf(CF2)a—C(?O)N(—R1CH2CH2SiR2nL3?n)2 wherein Rf is a linear polyfluoroalkyl group having at least two carbon atoms and at least one etheric oxygen atom between carbon atoms, Rf4 is a C1-30 perfluoroalkyl group or the like, X1 is a halogen atom, R1 is an alkylene group, a is an integer of from 1 to 5, R2 is a monovalent hydrocarbon group, L is a hydrolyzable group, and n is an integer of from 0 to 2.

Abstract: Processes for producing a fluorinated ether compound are provided by which fluorinated ether compound capable of imparting excellent water/oil repellency, to a substrate surface or a hard coat layer can be easily produced in high yield. A process comprising reacting Rf(CF2)a—CF2OC(?O)Rf4 or Rf(CF2)a—C(?O)X1 with HN(—R1CH?CH2)2 to obtain Rf(CF2)a—C(?O)N(—R1CH2?CH2)2 and a process comprising obtaining the above product and reacting the product with HSiR2nL3-n to obtain Rf(CF2)a—C(?O)N(—R1CH2CH2SiR2nL3-n)2 wherein Rf is a linear polyfluoroalkyl group having at least two carbon atoms and at least one etheric oxygen atom between carbon atoms, Rf4 is a C1-30 perfluoroalkyl group or the like, X1 is a halogen atom, R1 is an alkylene group, a is an integer of from 1 to 5, R2 is a monovalent hydrocarbon group, L is a hydrolyzable group, and n is an integer of from 0 to 2.

Abstract: To provide a fluorinated ether compound, a fluorinated ether composition and a coating liquid that are able to form a surface layer which is excellent in water/oil repellency, abrasion resistance, fingerprint stain removability, lubricity and outer appearance, and an article having such a surface layer. A fluorinated ether compound represented by A1-O—(Rf1O)m1-Q1-[C(O)N(R1)]p1—R11—C[—R12—SiR13n1X13-n1]3, wherein A1 is a C1-20 perfluoroalkyl group; Rf1 is a fluoroalkylene group having no branched structure; m1 is an integer from 2 to 210; Q1 is a single bond or a fluoroalkylene group having no branched structure; R1 is a hydrogen atom, etc.; p1 is 0 or 1; R11 is a single bond, an alkylene group, etc.; R12 is an alkylene group, etc.; R13 is a monovalent hydrocarbon group, etc.; X1 is a hydrolyzable group; and n1 is an integer of from 0 to 2.

Abstract: To provide a fluorinated ether compound, a fluorinated ether composition and a coating liquid that are able to form a surface layer which is excellent in water/oil repellency, abrasion resistance, fingerprint stain removability, lubricity and outer appearance, and an article having such a surface layer. A fluorinated ether compound represented by A1-O—(Rf1O)m1Q1-[C(O)N(R1)]p1—R11—C[—R12—SiR13n1X13-n1]3, wherein A1 is a C1-20 perfluoroalkyl group; Rf1 is a fluoroalkylene group having no branched structure; m1 is an integer from 2 to 210; Q1 is a single bond or a fluoroalkylene group having no branched structure; R1 is a hydrogen atom, etc.; p1 is 0 or 1; R11 is a single bond, an alkylene group, etc.; R12 is an alkylene group, etc.; R13 is a monovalent hydrocarbon group, etc.; X1 is a hydrolyzable group; and n1 is an integer of from 0 to 2.

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 surface treatment agent capable of imparting excellent water/oil repellency, fingerprint stain removability, abrasion resistance and lubricity to the surface of a substrate. A surface treatment agent for a substrate, comprising a perfluoropolyether group-containing phosphate compound, a coating agent comprising the surface treatment agent and a liquid medium, and a substrate having a surface layer formed from the surface treatment agent or the coating agent.

Abstract: To provide a fluorinated ether compound, a fluorinated ether composition and a coating liquid that are able to form a surface layer which is excellent in water/oil repellency, abrasion resistance, fingerprint stain removability, lubricity and outer appearance, and an article having such a surface layer. A fluorinated ether compound represented by A1-O—(Rf1O)m1-Q1-[C(O)N(R1)]p1—R11—C[—R12—SiR13n1X13-n1]3, wherein A1 is a C1-20 perfluoroalkyl group; Rf1 is a fluoroalkylene group having no branched structure; m1 is an integer from 2 to 210; Q1 is a single bond or a fluoroalkylene group having no branched structure; R1 is a hydrogen atom, etc.; p1 is 0 or 1; R11 is a single bond, an alkylene group, etc.; R12 is an alkylene group, etc.; R13 is a monovalent hydrocarbon group, etc.; X1 is a hydrolyzable group; and n1 is an integer of from 0 to 2.

Abstract: To provide a fluorinated ether compound, a fluorinated ether composition and a coating liquid that are able to form a surface layer which is excellent in water/oil repellency, abrasion resistance, fingerprint stain removability, lubricity and outer appearance, and an article having such a surface layer. A fluorinated ether compound represented by A1—O—(Rf1O)m1-Q1[C(O)N(R1)]p1—R11C[—R12—SiR13n1X13-n1]3, wherein A1 is a C1-20 perfluoroalkyl group; Rf1 is a fluoroalkylene group having no branched structure; ml is an integer from 2 to 210; Q1 is a single bond or a fluoroalkylene group having no branched structure; R1 is a hydrogen atom, etc.; p1 is 0 or 1; R11 is a single bond, an alkylene group, etc.; R12 is an alkylene group, etc.; R13 is a monovalent hydrocarbon group, etc.; X1 is a hydrolyzable group; and n1 is an integer of from 0 to 2.

Abstract: To provide a fluorinated ether compound, a fluorinated ether composition and a coating liquid that are able to form a surface layer which is excellent in water/oil repellency, abrasion resistance, fingerprint stain removability, lubricity and outer appearance, and an article having such a surface layer. A fluorinated ether compound represented by A1-O—(Rf1O)m1-Q1-[C(O)N(R1)]p1—R11—C[—R12—SiR13n1X13-n1]3, wherein A1 is a C1-20 perfluoroalkyl group; Rf1 is a fluoroalkylene group having no branched structure; m1 is an integer from 2 to 210; Q1 is a single bond or a fluoroalkylene group having no branched structure; R1 is a hydrogen atom, etc.; p1 is 0 or 1; R11 is a single bond, an alkylene group, etc.; R12 is an alkylene group, etc.; R13 is a monovalent hydrocarbon group, etc.; X1 is a hydrolyzable group; and n1 is an integer of from 0 to 2.

Abstract: Processes for producing a fluorinated ether compound are provided by which fluorinated ether compound capable of imparting excellent water/oil repellency, to a substrate surface or a hard coat layer can be easily produced in high yield. A process comprising reacting Rf(CF2)a—CF2OC(?O)Rf4 or Rf(CF2)a—C(?O)X1 with HN(—R1CH?CH2)2 to obtain Rf(CF2)a—C(?O)N(—R1CH2?CH2)2 and a process comprising obtaining the above product and reacting the product with HSiR2nL3-n to obtain Rf(CF2)a—C(?O)N(—R1CH2CH2SiR2nL3-n)2 wherein Rf is a linear polyfluoroalkyl group having at least two carbon atoms and at least one etheric oxygen atom between carbon atoms, Rf4 is a C1-30 perfluoroalkyl group or the like, X1 is a halogen atom, R1 is an alkylene group, a is an integer of from 1 to 5, R2 is a monovalent hydrocarbon group, L is a hydrolyzable group, and n is an integer of from 0 to 2.

Abstract: To provide a surface treatment agent capable of imparting excellent water/oil repellency, fingerprint stain removability, abrasion resistance and lubricity to the surface of a substrate. A surface treatment agent for a substrate, comprising a perfluoropolyether group-containing phosphate compound, a coating agent comprising the surface treatment agent and a liquid medium, and a substrate having a surface layer formed from the surface treatment agent or the coating agent.

Abstract: To provide a surface treatment agent capable of imparting excellent water/oil repellency, fingerprint stain removability, abrasion resistance and lubricity to the surface of a substrate. A surface treatment agent for a substrate, comprising a perfluoropolyether group-containing phosphate compound, a coating agent comprising the surface treatment agent and a liquid medium, and a substrate having a surface layer formed from the surface treatment agent or the coating agent.

Abstract: A composition including a fluorinated compound (A), a compound (B) and a solvent (S1), wherein the content of the fluorinated compound (A) in the composition is from 5 to 30 mass % to the composition, and the content of the compound (B) is from 0.1 to 2 mass % to the composition, wherein the fluorinated compound (A) has no isocyanate group and has a portion derived from a compound (a) having a poly(oxyperfluoroalkylene) chain and an active hydrogen-containing group, a portion derived from a compound (b) having a polymerizable carbon-carbon double bond and an active hydrogen-containing group, and a portion derived from a polyisocyanate (c), and wherein the compound (B) has a polymerizable carbon-carbon double bond and an active hydrogen-containing group.

Abstract: A fluorinated compound represented by D1-Rf1—O—CH2—(CmF2mO)n-A (wherein D1 is CF3— or CF3—O—, Rf1 is a C1-20 fluoroalkylene group containing at least one hydrogen atom, a C2-20 fluoroalkylene group containing at least one hydrogen atom and having an etheric oxygen atom between carbon-carbon atoms, etc., m is an integer of from 1 to 6, n is an integer of from 1 to 200, and A is a monovalent organic group having at least one (meth)acryloyl group), which is capable of imparting excellent antifouling properties (oily ink repellency, fingerprint stain removability) and lubricity to e.g. a hard coat layer; a hard coat layer-forming composition which contains such a fluorinated compound; and an article having a hard coat layer formed from such a composition.

Abstract: To provide a fluorinated ether compound, a fluorinated ether composition and a coating liquid that are able to form a surface layer which is excellent in water/oil repellency, abrasion resistance, fingerprint stain removability, lubricity and outer appearance, and an article having such a surface layer. A fluorinated ether compound represented by A1—O—(Rf1O)m1-Q1-[C(O)N(R1)]p1—R11—C[—R12—SiR13n1X13?n1]3, wherein A1 is a C1-20 perfluoroalkyl group; Rf1 is a fluoroalkylene group having no branched structure; m1 is an integer from 2 to 210; Q1 is a single bond or a fluoroalkylene group having no branched structure; R1 is a hydrogen atom, etc.; p1 is 0 or 1; R11 is a single bond, an alkylene group, etc.; R12 is an alkylene group, etc.; R13 is a monovalent hydrocarbon group, etc.; X1 is a hydrolyzable group; and n1 is an integer of from 0 to 2.

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 compound-containing composition which is capable of imparting excellent antifouling properties to an object (such as a hard coat layer) and which is excellent in compatibility and has foaming suppressed. This composition comprises the following fluorinated compound (A), the following compound (B) and a solvent (S1), wherein the content of the following fluorinated compound (A) in the composition is from 5 to 30 mass % to the composition, and the content of the following compound (B) is from 0.

Abstract: To provide a fluorinated compound capable of imparting excellent antifouling properties (oily ink repellency and fingerprint-stain removability) and abrasion resistance of the antifouling properties to an object (such as a hard coat layer). It is a reaction product of a compound (a1) having a poly(oxyperfluoroalkylene) chain and one active hydrogen-containing group, a compound (a2) having a poly(oxyperfluoroalkylene) chain and two active hydrogen-containing groups, a compound (b) having a polymerizable carbon-carbon double bond and an active hydrogen-containing group, and a polyisocyanate (c), wherein the proportion of the portion derived from the compound (a1) to the total (100 mass %) of the portion derived from the compound (a1) and the portion derived from the compound (a2) is from 60 to 99.9 mass %.