A (meth)acrylic copolymer of the present invention includes at least one constituent unit (A) selected from the group consisting of a constituent unit (A1) having at least one structure (I) represented by Formula (1), Formula (2), or Formula (3), a constituent unit (A2) containing a triorganosilyloxycarbonyl group, and a constituent unit (A3) having at least one structure (III) represented by Formula (4) or Formula (5), a constituent unit (B) derived from a specific polysiloxane block-containing polymerizable monomer (b), and a constituent unit (C) derived from a macromonomer (c).

A film including: an organic polymeric substrate having a first major surface and a second major surface; an optional acrylic hardcoat layer disposed on the first major surface of the substrate; a siliceous primer layer disposed on the organic polymeric substrate or on the optional acrylic hardcoat layer, wherein the siliceous primer layer includes silica nanoparticles modified by an organic silane; and a superhydrophilic surface layer disposed on the siliceous primer layer, wherein the superhydrophilic surface layer includes hydrophilic-functional groups.

To provide an article with a water and oil repellent layer, which is excellent in friction resistance.

The article with a water and oil repellent layer of the present invention comprises a substrate, a water and oil repellent layer consisting of a hydrolyzed condensation product of a compound represented by the formula [A-(OX).sub.m-].sub.jY.sup.1[—Si(R).sub.nL.sub.3-n].sub.g, and a silicon oxide layer containing alkali metal atoms that exists between the substrate and the water and oil repellent layer, wherein the average value of the concentration of alkali metal atoms in a predetermined area in the silicon oxide layer is at least a predetermined value. In the formula, X is a fluoroalkylene group, m is at least 2, j, g, and k are at least 1, and Y.sup.1 and Y.sup.2 are linking groups, R is a monovalent hydrocarbon group, L is a hydrolyzable group or hydroxy group, n is 0 to 2, A is a perfluoroalkyl group or —Y.sup.2[—Si(R).sub.nL.sub.3-n].sub.n. When A is —Y.sup.2[—Si(R).sub.nL.sub.3-n].sub.k, j is 1, and when A is a perfluoroalkyl group and j is 1, g is at least 2.

The present disclosure relates to a laminate and a method for preparing the same. The laminate comprises a substrate, a coating layer, and a water-repellent layer sequentially laminated, the coating layer comprises a first coating layer and a second coating layer laminated one or more times alternately, the first coating layer comprises at least one metal oxide selected from a group consisting of a lanthanide metal oxide, a transition metal oxide, and a composite metal oxide comprising lanthanum metal and transition metal, the second coating layer comprises an alkaline earth metal fluoride and a transition metal oxide.

Repellent coatings for solid surfaces that repeatedly are subjected to high temperatures cycles are disclosed. The repellent coatings on such surfaces are formed from a formulation having (i) one or more reactive silane or siloxane components that can form a bonded layer on the surface in which the bonded layer comprises an array of compounds each compound having one end bound to the surface and an opposite end extending away from the surface, (ii) an acid catalyst, and (iii) a solvent. A lubricant can be included in the formulation or applied on a formed bonded layer. The surface of the substrate and repellent coating thereon are subjected to a temperature of above and below 65° C. as a cycle and the cycle repeated at least twice.

Formulations for preparing repellent coatings on surfaces of substrates, such as medical devices, can include a non-cyclic volatile siloxane solvent such as a linear or a branched volatile alkyl (e.g., methyl) siloxane solvent and mixtures thereof. Such formulations include (i) one or more reactive components that can form a bonded layer on a surface in which the bonded layer comprises an array of compounds having one end bound to a surface and an opposite end extending away from the surface; (ii) an acid catalyst; and (iii) the non-cyclic volatile siloxane solvent. The formulation can also include (iv) a lubricant.

The present application describes novel antifouling coating compositions comprising carbon-based hydrolysable polymers of ethylenically unsaturated monomers of which some include cyclic carbonates or cyclic ethers, e.g. (2,2-dimethyl-1,3-dioxolan-4-yl)methyl (meth)acrylate (IPGA/IPGMA), isopropylidene glycerol ethoxylated acrylate (iPGEOA), isopropylidene glycerol ethoxylated methacrylate (iPGEOMA) and (2-oxo-1,3-dioxolan-4-yl)methyl (meth)acrylate (GCA/GCMA), and their use in antifouling coating compositions. Novel polymers are also described.

This water-repellent, oil-repellent member is obtained via, inter alia, a method having: a step for wet-coating a substrate surface with a solution that contains a solvent and an organosilicon compound comprising multiple silanol groups in the molecule; a step for drying the solvent to form and laminate a primer layer on the substrate surface; a step for wet-coating the outer surface of the primer layer with a solution containing a hydrolyzable fluorine-containing compound and a solvent, and subsequently drying the solvent, or dry-coating the outer surface of the primer layer with a hydrolyzable fluorine-containing compound obtained by evaporating the solvent from the solution; and a step for curing the hydrolyzable fluorine-containing compound to form and laminate a water-repellent, oil-repellent layer on the outer surface of the primer layer. The water-repellent, oil-repellent member is obtained by providing, on various substrates: a primer layer of a specific thickness that contains, as a main component, an organosilicon compound having multiple silanol groups in the molecule; and, on the outer surface of the primer layer, a water-repellent, oil-repellent layer of a specific thickness that contains, as a main component, the cured hydrolyzable fluorine-containing compound. The water-repellent, oil-repellent member makes it possible for a water-repellent, oil-repellent coating exhibiting superior abrasion resistance and antistatic properties to be stably and straightforwardly formed on various substrates.

The present invention concerns a composition for a surface coating (10), in particular for aquatic applications, characterized in that the composition (12) has a polymer structure which is composed of at least three units, a first unit comprising a dendrimer structure based on a polyamidoamine, a second unit (14) comprising an epoxy resin, and a third unit (16) comprising an amine-reactive polysiloxane, the polymer structure being arranged such that the first unit is formed as a central unit to which the second unit (14) and the third unit (16) are each covalently bonded

The present invention belongs to the field of super-hydrophobic surface technology, and discloses a durable hydrophilic-super-hydrophobic bipolar self-cleaning composite film and a preparation method therefor. The preparation method is as follows: adding an epoxy silane coupling agent into an organic solvent; after stirring and mixing well, adding an amine curing agent and distilled water to the mixture; stirring and adding micron-sized solid particles and hydrophobic nano silicon dioxide particles; continuing stirring to obtain a hydrophilic layer solution; adding a hydrophobic modifier and a hydrophilic nano silicon dioxide particles into the solvent to obtain a hydrophobic layer solution; coating a pretreated substrate surface with the hydrophilic layer solution, and performing heating treatment at 60° C. to 80° C. for 10-50 min; then coating the surface with the hydrophobic layer solution, and performing heating treatment at 100° C. to 140° C. for 50-90 min to obtain the durable hydrophilic-super-hydrophobic bipolar self-cleaning composite film. The preparation method of the present invention is simple, and the super-hydrophobic surface of the obtained composite film has strong mechanical durability and a good industrial application prospect.