The present disclosure provides coating compositions which are transparent and hydrophobic or superhydrophobic. The coating composition may include a compound with hydrophobic moieties and a transparent binder. Methods of preparing such coatings at room temperature are also provided, along with methods of providing a transparent and hydrophobic or superhydrophobic coating to a surface. The coating compositions of the present disclosure may exhibit a transparency of at least about 95%.

An oil-resistant agent including a non-fluorine compound containing a repeating unit formed from an acrylic monomer having an urea bond and alkyl group having 1 to 12 carbon atoms. The non-fluorine compound satisfies, in an X-ray diffraction (XRD) measurement, (iii) having a half width of a peak at 2? of 15 to 25? of 2.0? or more at a measurement temperature of 25? C. The non-fluorine compound optionally further satisfies, in an X-ray diffraction (XRD) measurement, at least one of: parameters (i), (ii), (iv) and (vi) as defined herein relating to peak intensity or peak top, and in a differential scanning calorimetry measurement (DSC), parameter (vi) relating to a half width of a melting peak. Further, the non-fluorine compound has a hexadecane (HD) contact angle of 30? or more at a measurement temperature of 25? C. and/or is not soluble in corn oil at 25? C.

A barrier layer applied to a cellulose substrate to protect sensitive substances. The cellulose substrate is coated with the barrier layer composition. An aqueous mineral suspension and an aqueous composition for preparing the barrier layer composition includes a polymeric stabilising agent prepared from (meth)acrylic acid and a polyalkoxylated methacrylic derivative.

A coating agent is disclosed containing a carboxy group-containing polyvinyl alcohol-based resin, a crosslinking agent, and a modified starch. Also disclosed is an oil-resistant paper including a layer containing the coating agent.

The present invention relates to a polymer comprising (a1) silyl ester group(s) and (a2) quaternary ammonium group(s) and/or quaternary phosphonium group(s), said quaternary ammonium groups and/or quaternary phosphonium groups being neutralised by counter-ions, wherein the counter-ions consist of the conjugate base of an acid having an aliphatic, aromatic, or alkaryl hydrocarbyl group. The invention further relates to a fouling control coating composition comprising said polymer, a method of protecting a man-made structure immersed in water from fouling, and a substrate or structure coated with the fouling control coating composition.

Provided is an antifouling coating composition, which can form a coating film having good hardness and good physical properties and having a wear degree appropriate for expressing a long-term antifouling effect, has a viscosity not being excessively high, and makes it possible to reduce a content of volatile organic compounds, and a polymer-containing composition which is suitable for obtaining the antifouling coating composition. The polymer-containing composition contains a (meth)acryl-based copolymer (A-1), in which the (meth)acryl-based copolymer (A-1) contains a constitutional unit (U11) or a constitutional unit (U12) having carboxylate forming an ionic bond with a divalent metal atom, and has a weight-average molecular weight of 1,000 to 5,000, and the polymer-containing composition has a coating film hardness (Martens hardness) equal to or higher than 2.5 N/mm.sup.2.

The present invention relates to antifouling compositions comprising copper di(ethyl 4,4,4-trifluoroacetoacetate) (Cu(ETFAA)2) that are highly effective against marine biofouling of surfaces of ships and marine structures, their use for inhibiting marine biofouling, as well as antifouling paints comprising said compositions.

A substrate comprising a surface at least a portion of which is covered with an epilame agent, comprising at least one compound in the form of a copolymer comprising units M and units N, associated by covalent bonds via their main chains, where

M is

##STR00001##

N is

##STR00002##

where R.sub.1 and R.sub.2, which may be identical or different, are H, a C.sub.1-C.sub.10 alkyl group, a C.sub.2-C.sub.10 alkenyl group; X and Y, which may be identical or different, are spacer arms consisting of a heteroatom or a linear or branched hydrocarbon chain containing at least one heteroatom and comprising at least one carbon atom; A, which may be identical or different, forms an anchoring group to the substrate; L, which may be identical or different, is a halogenated ether group according to formula (I)

##STR00003##

where Q is a halogen atom; P, which may be identical or different, is a C.sub.1-C.sub.10 alkyl group or a C.sub.2-C.sub.10 alkenyl group comprising at least one halogen atom and being linear or branched; p is chosen between 1 and 4; and n is chosen between 1 and 20.

The invention provides a highly durable surface coating intended to inhibit the formation of ice at sub-0 C. temperatures as well as reduce the accumulation of dirt and insect debris to a vehicle surface upon impact. A continuous, durable matrix surrounds both low-surface-energy (low-adhesion) material inclusions as well as hygroscopic material inclusions. Some variations provide a low-friction, low-adhesion material comprising: a durable continuous matrix; a plurality of first inclusions, dispersed within the matrix, each comprising a low-surface-energy polymer; and a plurality of second inclusions, dispersed within the matrix, each comprising a hygroscopic material. The matrix and the first and second inclusions form a lubricating surface layer in the presence of humidity. Other variations employ a durable continuous matrix and a plurality of inclusions, dispersed within the matrix, each comprising a low-surface-energy polymer surrounding a hygroscopic material. Coating precursors and methods of forming final coatings are also described.

A heat-exchanger fin material (1) has a coating film (3) formed on at least one surface of an aluminum substrate (2). An outermost surface of the coating film (3) is a positively-chargeable coating (31) that is essentially composed of only one or more resins selected from the group consisting of cellulose-based resins, acrylic-based resins, vinyl alcohol-based resins, acrylamide-based resins, and ester-based resins. The surface roughness Ra of the coating film (3) is 100 nm or less. A heat exchanger (5) includes a plurality of fins composed of the fin material (1) and at least one metal tube (7) passing through the plurality of fins (1).