Provided is an insulating varnish composition, including: two or more kinds of epoxy resins; and a filler having an average primary particle diameter of 500 nm or less, wherein the two or more kinds of epoxy resins contain 80 mass % or more of an epoxy resin having a number of repetitions of 0 in a molecular structural formula thereof with respect to a total mass of the two or more kinds of epoxy resins.

There is provided a composition comprising: (i) a polymer; (ii) inorganic particles; and (iii) aqueous medium, wherein the inorganic particles are adapted to interact with the polymer to cause an increase in glass transition temperature (Tg) during film formation of the composition. Also provided are a film, a method of preparing said film, a kit and a coated substrate.

Articles including durable and icephobic and/or biocidal polymeric coatings are disclosed. The polymeric coatings can include a bonding layer which may contain a substantially fully cured polymeric resin providing excellent adhesion to metallic or polymer substrates. The polymeric coating further includes an outer surface layer which is smooth, hydrophobic, biocidal and icephobic and, in addition to a substantially fully cured resin, contains silicone comprising additives near the exposed outer surface. The anisotropic polymeric coatings are particularly suited for strong and lightweight parts required in aerospace, automotive and sporting goods to applications. A process for making the articles is disclosed as well.

A coating agent for oil seal comprising 10 to 90 parts by weight of a filler and 10 to 40 parts by weight of a wax, based on 100 parts by weight of isocyanate group-containing 1,2-polybutadiene, and being prepared as an organic solvent solution, wherein as the filler, silicone resin particles having a particle size of 0.5 to 10 μm and fluororesin particles having a particle size of 0.1 to 2 μm are each used at a ratio of 20 to 80 wt. % of the total filler amount. The coating agent for oil seal can exhibit excellent seal performance inherent in oil seal while maintaining excellent dispersibility of the coating agent, and can further achieve low torque characteristics.

Disclosed herein is conductive paint for electro-deposition painting. The conductive paint includes non-oxide ceramic particles each configured such that an oxide layer is provided on a surface thereof. In this case, the non-oxide ceramic particles include at least one type of AxBy-form particles, where the sum of x and y is 7 or less.

A resin formulation that may be used for additive manufacturing, for example, to provide a water-breakable object is generally described.

In various embodiments, the present invention is directed to photothermal-responsive melanin-based nanocomposites comprising a plurality of natural or synthetic melanin nanoparticles distributed with a polymer matrix suitable for use in anti-counterfeiting, photothermal responsive-communication, sensors, and heat management, among other applications. In some embodiments, the present invention will be an ink, paint, or other coating comprising the photothermal-responsive melanin-based nanocomposites. In some embodiments, the present invention is directed to a written message or design comprising one or more of the photothermal-responsive melanin-based nanocomposites. In some of these embodiments, the written message or design will be comprised of two ore more of the photothermal-responsive melanin-based nanocomposites having different concentrations of natural or synthetic melanin nanoparticles.

The present disclosure provides a film-forming composition capable of forming a film having excellent water repellency, a high level of hardness, and excellent water resistance, and provides the film. The film-forming composition of the present disclosure contains an inorganic fine particle, a polymerizable component, and a water-repellent component, wherein the inorganic fine particle has an average particle size of 100 nm or more and 5 μm or less, the content of the inorganic fine particle is 5 to 40 parts by mass per 100 parts by mass of the total mass of the inorganic fine particle, the polymerizable component, and the water-repellent component, and the water-repellent component is a polymer having at least a structure unit based on the compound represented by the following formula (1):

##STR00001##

wherein X represents a hydrogen atom etc., Y represents a direct bond, a C.sub.1-10 hydrocarbon group optionally having an oxygen atom etc., R.sup.a represents a linear or branched alkyl group having 20 or less carbon atoms, or a linear or branched fluoroalkyl group having 6 or less carbon atoms etc.

Provided is a method for producing an aqueous clear coating composition that is capable of providing an aqueous clear coating composition comprising inorganic oxide fine particles as an ultraviolet absorber and an aqueous silicone resin emulsion having good storage stability, which aqueous clear coating composition is capable of forming a coating film being superior in weatherability and durability (especially acid resistance) and high in transparency. A method for producing an aqueous clear coating composition comprising an aqueous silicone resin emulsion, the method comprising the following steps: obtaining a silicone resin-organic solvent mixture from a mixture of a silicone resin (A) with an organic solvent (B1) by replacing at least portion of the organic solvent (B1) with an organic solvent (B2) and/or an organic solvent (B3), mixing the silicone resin-organic solvent mixture, the organic solvent (B2) and/or the organic solvent (B3), and inorganic oxide fine particles (D) to obtain a silicone resin mixture, and subjecting the silicone resin mixture and a mixture of an emulsifier (C) with an aqueous medium to a mechanical emulsification treatment, or subjecting a mixture of the silicone resin mixture with an emulsifier (C) and an aqueous medium to a mechanical emulsification treatment to obtain an aqueous silicone resin emulsion, wherein the silicone resin (A) comprises a branched organopolysiloxane (A1) having a weight average molecular weight of 5,000 to 300,000, wherein the organic solvent (B1) comprises a hydrocarbon-based solvent having a solubility of 1 g/100 g-H.sub.2O or less in water, wherein the organic solvent (B2) comprises at least one solvent selected from a group consisting of an alcohol, an alkylene glycol monoalkyl ether, and an alkylene glycol dialkyl ether, and the organic solvent (B2) has a solubility of less than 5 g/100 g-H.sub.2O in water, wherein the organic solvent (B3) is at least one solvent selected from a group consisting of an alcohol, an alkylene glycol monoalkyl ether, and an alkylene glycol dialkyl ether, and the organic solvent (B3) has a solubility of 5 g/100 g-H.sub.2O or more in water, and wherein the silicone resin mixture comprises both the organic solvent (B2) and the organic solvent (B3).

This invention provides resin formulations which may be used for 3D printing and pyrolyzing to produce a ceramic matrix composite. The resin formulations contain a solid-phase filler, to provide high thermal stability and mechanical strength (e.g., fracture toughness) in the final ceramic material. The invention provides direct, free-form 3D printing of a preceramic polymer loaded with a solid-phase filler, followed by converting the preceramic polymer to a 3D-printed ceramic matrix composite with potentially complex 3D shapes or in the form of large parts. Other variations provide active solid-phase functional additives as solid-phase fillers, to perform or enhance at least one chemical, physical, mechanical, or electrical function within the ceramic structure as it is being formed as well as in the final structure. Solid-phase functional additives actively improve the final ceramic structure through one or more changes actively induced by the additives during pyrolysis or other thermal treatment.