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.

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.

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 A.sup.1-O(R.sup.f1O).sub.m1-Q.sup.1-[C(O)N(R.sup.1)].sub.p1R.sup.11C[R.sup.12SiR.sup.13.sub.n1X.sup.1.sub.3-n1].sub.3, wherein A.sup.1 is a C.sub.1-20 perfluoroalkyl group; R.sup.f1 is a fluoroalkylene group having no branched structure; m1 is an integer from 2 to 210; Q.sup.1 is a single bond or a fluoroalkylene group having no branched structure; R.sup.1 is a hydrogen atom, etc.; p1 is 0 or 1; R.sup.11 is a single bond, an alkylene group, etc.; R.sup.12 is an alkylene group, etc.; R.sup.13 is a monovalent hydrocarbon group, etc.; X.sup.1 is a hydrolyzable group; and n1 is an integer of from 0 to 2.

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 A.sup.1-O(R.sup.f1O).sub.m1-Q.sup.1-[C(O)N(R.sup.1)].sub.p1R.sup.11C[R.sup.12SiR.sup.13.sub.n1X.sup.1.sub.3-n1].sub.3, wherein A.sup.1 is a C.sub.1-20 perfluoroalkyl group; R.sup.f1 is a fluoroalkylene group having no branched structure; m1 is an integer from 2 to 210; Q.sup.1 is a single bond or a fluoroalkylene group having no branched structure; R.sup.1 is a hydrogen atom, etc.; p1 is 0 or 1; R.sup.11 is a single bond, an alkylene group, etc.; R.sup.12 is an alkylene group, etc.; R.sup.13 is a monovalent hydrocarbon group, etc.; X.sup.1 is a hydrolyzable group; and n1 is an integer of from 0 to 2.

The present invention addresses the problem of providing a super-liquid-repellent coating film that has improved abrasion resistance. Provided as a means for solving the problem is a coating film that has a fluorine atom content of 1 to 60 wt %, the coating film having a surface that has an average surface roughness Ra of 0.5 to 20, a surface area ratio of 1.7 to 5, a contact angle with water of 150 or more, a contact angle with n-hexadecane of 80 or more, and a surface that has a contact angle with water of 150 or more after being rubbed 100 times with a PET film under a load of 100 g.

The present invention addresses the problem of providing a super-liquid-repellent coating film that has improved abrasion resistance. Provided as a means for solving the problem is a coating film that has a fluorine atom content of 1 to 60 wt %, the coating film having a surface that has an average surface roughness Ra of 0.5 to 20, a surface area ratio of 1.7 to 5, a contact angle with water of 150 or more, a contact angle with n-hexadecane of 80 or more, and a surface that has a contact angle with water of 150 or more after being rubbed 100 times with a PET film under a load of 100 g.

A water based paint that can be used to form a superhydrophobic coating includes a fluorinated particulate filler, a water soluble or water suspendable resin, and an aqueous solvent. The superhydrophobic paint can be applied to a surface where the loss of the solvent results in a superhydrophobic coating.

A water based paint that can be used to form a superhydrophobic coating includes a fluorinated particulate filler, a water soluble or water suspendable resin, and an aqueous solvent. The superhydrophobic paint can be applied to a surface where the loss of the solvent results in a superhydrophobic coating.

Provided is a coating composition containing: water; a water-soluble organic solvent that has a flash pint of at least 80 C. and not more than 200 C. and dissolves a fluorine resin; a fluorine resin; hydrophilic silica particles; and hydrophobic silica particles. The hydrophilic silica particles are preferably contained in the coating composition in an amount of at least 0.001 mass % and not more than 1 mass %. The average particle diameter of the hydrophilic silica particles is preferably at least 5 nm and not more than 30 nm.

Provided is a coating composition containing: water; a water-soluble organic solvent that has a flash pint of at least 80 C. and not more than 200 C. and dissolves a fluorine resin; a fluorine resin; hydrophilic silica particles; and hydrophobic silica particles. The hydrophilic silica particles are preferably contained in the coating composition in an amount of at least 0.001 mass % and not more than 1 mass %. The average particle diameter of the hydrophilic silica particles is preferably at least 5 nm and not more than 30 nm.