A primer composition comprising metal oxide particles modified with an alkyltrialkoxy silane; an organic polymer; and a solvent. The weight ratio of alkyltrialkoxy silane to metal particles is at least 0.9:1. The primer compositions produce films having excellent optical and adhesion characteristics.

An alkoxysilane comprising a functional group is used as an additive in the silver nanoparticle ink, and as an adhesion promoter (or primer layer) on the surface of the substrate in order to enhance the adhesion of silver nanoparticle inks on temperature-sensitive plastic substrates. The combination of the functionalized alkoxysilane both in the ink and on the substrate's surface provides enhanced adhesion after annealing the ink at a low temperature. The adhesion of the annealed films improves from a 0B-3B level to 4B-5B when tested according to ASTM D3359. No degradation of adhesion and no change of color are observed after aging the annealed films in a humidity chamber.

A primer layer comprising a polyvinyl butyral resin enhances adhesion of silver nanoparticle inks onto plastic substrates. The primer layer comprises a polyvinyl butyral (PVB) resin having a polyvinyl alcohol content between about 18 wt. % to about 21 wt. %. The PVB resin may also have a glass transition temperature greater than about 70° C. Optionally, the PVB primer layer may further be enhanced by cross-linking using a melamine-formaldehyde resin. Conductive traces formed on plastic substrates having the PVB primer layer exhibit an acceptable cross-hatch adhesion rating with little to no degradation of adhesion being observed after exposure to 4-days salt mist aging or 1-day high humidity aging.

Electrophotographic printing techniques offer excellent image quality, but image adhesion to a desired substrate may be problematic in many instances. Primer coatings for improving image adhesion to a substrate may be formed from primer compositions comprising a fluid and an amine-functionalized copolymer dispersed in the fluid as an emulsion, in which the amine-functionalized copolymer has an amine number of about 10 to about 180 mg KOH/g copolymer. The fluid may be aqueous or organic. Suitable amine-functionalized copolymers may be formed by an emulsion polymerization reaction of one or more first ethylenically unsaturated monomers lacking an amine group and one or more second ethylenically unsaturated monomers bearing at least one amine group. The at least one amine group comprises a side chain of the amine-functionalized copolymer.

The invention provides a water- and oil-repelling member having a primer layer as a first layer on at least one surface of a base material and further having a water- and oil-repelling layer as a second layer on the outer surface of the primer layer. The primer layer comprises a layer containing nano-diamonds and having a film thickness of 0.5 to 500 nm, the main component being an organic silicon compound having a plurality of silanol groups within a molecule. The water- and oil-repelling layer comprises a layer having a film thickness of 0.5 to 30 nm, the main component being a cured product of a hydrolysable fluorine-containing compound. The water- and oil-repelling member can stably and simply impart a water- and oil-repelling coat having excellent abrasion resistance to various base materials. In addition, the primer layer and the water- and oil-repelling layer can be coated even in a room-temperature (25° C.) process.

An adhesion promoter composition is disclosed. The adhesion promoter composition also includes one or more reactive silanes which includes a mercaptopropyltrimethoxysilane, a glycidoxypropyltrimethoxysilane, or combinations thereof. The adhesion promoter composition also includes one or more reactive organometallics. The composition may include one or more organic solvents, an optional one or more gelling agents, and an optional one or more functional additives. A method for applying the adhesion promoter composition is disclosed, including contacting the one or more organic solvents, the one or more reactive silanes, the one or more reactive organometallics, the optional one or more gelling agents, and the one or more functional additives with one another to prepare the adhesion promoter composition, homogenizing the adhesion promoter composition, applying the adhesion promoter composition to a substrate, evaporating the organic solvents from the adhesion promoter composition, and applying a resin or paint layer over the adhesion promoter composition.

Disclosed are a binder composition, a slurry composition, and a method of coating the surface of a metal with a superabsorbent polymer. Even when the slurry composition contains a large amount of the superabsorbent polymer, the low viscosity thereof can be maintained, thus enabling the uniform coating of the surface of the metal with the superabsorbent polymer. Also, even when a plurality of humidification-drying cycles is repeated in the coating process, no detachment occurs, and thus the superabsorbent polymer can be applied to various fields.

An adhesion promoter composition is disclosed. The adhesion promoter composition includes a first reactive silane compound and a second reactive silane compound, where the second reactive silane is different from the first. The adhesion promoter composition also includes one or more organic solvents and an organic base. A method for applying the adhesion promoter composition is also disclosed.

Coating compositions are disclosed that include corrosion resisting particles such that the coating composition can exhibit corrosion resistance properties. Also disclosed are substrates at least partially coated with a coating deposited from such a composition and multi-component composite coatings, wherein at least one coating later is deposited from such a coating composition. Methods and apparatus for making ultrafine solid particles are also disclosed.

The present invention relates to a primer coating composition that includes, (a) a (meth)acrylic polymer that includes hydroxyl groups, and which has a Tg of at least 30° C. The primer coating composition further includes, (b) a polyester that includes hydroxyl groups, and which has a weight average molecular weight of less than 3000, and a hydroxyl value of at least 100. The primer coating composition also includes, (c) a crosslinking agent having at least two isocyanate groups. The present invention also relates to a coated article that includes a repaired area that includes a primer coating formed from the primer coating composition of the present invention. The primer coating compositions, in accordance with some embodiments, provide reduced or minimal ringing defects.