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.

The present invention provides a method of treating a surface of a substrate, the method comprising: a) growing a microbe on the surface of the substrate to be treated to form a layer of microbial structures, wherein the microbe is selected from fungi, algae, lichens and any combination thereof; and b) coating the microbial structures to form a first coating thereon, wherein the first coating has a thickness of no more than 1 μm. The present invention also provides an article comprising a layer of microbial structures, optionally made by using the method of the present invention.

The present invention provides a method for producing an optical film excellent in anti-fouling properties and scratch resistance as well as anti-reflection properties. The method includes the steps of: (1) applying a lower layer resin and an upper layer resin; (2) forming a resin layer having the uneven structure on a surface thereof by pressing a mold against the lower layer resin and the upper layer resin from the upper layer resin side in the state where the applied lower layer resin and upper layer resin are stacked; and (3) curing the resin layer, the lower layer resin containing at least one kind of first monomer that contains no fluorine atoms, the upper layer resin containing a fluorine-containing monomer and at least one kind of second monomer that contains no fluorine atoms, at least one of the first monomer and the second monomer containing a compatible monomer that is compatible with the fluorine-containing monomer and being dissolved in the lower layer resin and the upper layer resin.

A textured film is provided which comprises nanocellulose. At least a first surface of the film comprises a patterned, textured surface formed by repeating protruding regions and at least one non-protruding region arranged between said protruding regions. A particular height difference between the protruding and non-protruding regions can give liquid repellent properties. Methods for making the textured film are also provided.

The present disclosure provides for compositions, articles including the composition, and articles and structures having a superhydrophobic, a superoleophobic, or an omniphobic surface after disposing the composition onto a surface of the article or structure. In general, the composition includes a fluid and a plurality of composite particles having a hydrophilic core and hydrophobic agents on the surface of the hydrophilic core. The composition can be processed so that the composite particles are dispersible in water, while generating a superhydrophobic, superoleophobic, or omniphobic surface upon application.

Methods for hydrophobizing arrows are described herein. In one aspect, the method can include applying a ceramic-based hydrophobic coating to the arrow; and curing the arrow for a predefined period of time.

The present disclosure provides for a coating composition system suitable for forming a stain resistant and soft tactile texture coating onto a variety of substrate materials including plastic materials, metal materials, ceramic materials, and concrete materials. The coating composition system can be cured under mild curing conditions, and provides the resulting coating with excellent properties in terms of adhesion to the substrates, strength, and abrasion resistance. The present disclosure also provides for a method for preparing the coating composition system, and the use thereof.

A coating film and a method for forming the same are provided. The coating film controls reduction in repellency of hydrophobic fine particles and increases rub fastness of the coating film. The coating film includes a ground layer containing thermoplastic resin (chlorinated polyolefin or acid modified chlorinated polyolefin, for example) and an upper layer containing hydrophobic fine particles (hydrophobic silica particle or silicone resin particle, for example) formed on the ground layer. Parts of the hydrophobic fine particles contained in the upper layer are buried in the ground layer.

A water-repellent structure includes: a base material; and a water-repellent layer located on a surface of the base material. The water-repellent layer contains water-repellent particles and filler particles having an average particle size that is 20 times or more as large as an average particle size of the water-repellent particles.