In certain embodiments, the disclosed sealant comprises a one-component, closed-cell, semi-foam, sealant using gas-filled, flexible, organic microspheres to create a product that is elastic and compressible under pressure without protruding in an outward direction when compressed, thereby allowing the applied sealant to compress in an enclosed, maximum-filled channel unlike typical mastic sealants (while retaining the ability to rebound). This allows the sealant to function as a gasket, and, once fully cured, to have properties including vibration damping, insulating, and condensation resistance. The sealant can be formulated as an air barrier or a vapor barrier and at various degrees of moisture resistance. It may be applied by different packaging variations including aerosol can (bag in can or bag on valve), airless sprayer, cartridge tubes, foil tubes, squeeze tubes, and buckets to be applied using a brush, trowel, spatula, etc. The disclosed sealant can also be formulated to be smoke-resistant and flame-resistant.

Coating compositions comprising a polymer binder and a sphere selected from porous metal oxide spheres formed from metal oxide particles and having, e.g., an average porosity of from 0.10 to 0.90; polymer spheres formed from a multimodal distribution of polymer particles; or mixtures thereof, are described herein. The sphere enhances the reflective characteristics of the coating compositions with respect to electromagnetic radiation. In particular, the coating compositions when dried, can exhibit UV reflectance, visible light reflectance, IR reflectance, or a combination thereof.

Coating compositions comprising a polymer binder and a sphere selected from porous metal oxide spheres formed from metal oxide particles and having, e.g., an average porosity of from 0.10 to 0.90; polymer spheres formed from a multimodal distribution of polymer particles; or mixtures thereof, are described herein. The sphere enhances the reflective characteristics of the coating compositions with respect to electromagnetic radiation. In particular, the coating compositions when dried, can exhibit UV reflectance, visible light reflectance, IR reflectance, or a combination thereof.

A thermally conductive material contains a base resin and an insulating filler, the insulating filler contains a thermally conductive filler and a hollow filler composed of particles including a gas layer, a content of the insulating filler is 20.0% by volume or more and 90.0% by volume or less based on a total material amount, and a content of the hollow filler is 25.0% by volume or more and 70.0% by volume or less based on a total amount of the insulating filler. A wiring harness is provided with an insulated wire composed of an insulation coating and a conductor, an exterior material, the insulated wire being inserted in the exterior material, and a heat dissipation material to be arranged between the insulated wire and the exterior material, and the heat dissipation material is made of the thermally conductive material.

Provided is a water repellent coating film, including: an undercoat layer formed on a surface of a base material and containing: at least one type of spherical particles having an average particle diameter of 2 μm or more and 50 μm or less and selected from the group consisting of spherical molten silica particles, spherical molten alumina particles, and spherical silicone resin particles; and an underlying resin; and a topcoat layer formed on the undercoat layer and containing: inorganic fine particles having an average particle diameter of 2 nm or more and 20 nm or less; and a water repellent resin. The underlying resin is preferably a polyurethane resin or a fluororesin. The water repellent resin is preferably a fluororesin or a silicone resin.

A hybrid expandable composition that provides improved expansion and loft properties is disclosed. The hybrid expandable composition is particularly useful in providing insulation and/or cushion to substrates.

A method of forming foam material is provided, which includes mixing 100 parts by weight of a compound having cyclic carbonate groups and a foaming agent to form a foaming composition, wherein the foaming agent includes 3 to 13 parts by weight of carbamate salt and 15 to 65 parts by weight of amino compound. The foaming composition is heated to 100° C. to 170° C. for decomposing the carbamate salt into CO.sub.2 and amino compound, and the amino compound is reacted with the compound having cyclic carbonate groups to form the foam material.

To retain voids in a paint film even if the paint film is subjected to pressure during storage, transportation, and press working. A pre-painted metal sheet according to the present invention includes: a metal sheet; and a void-containing paint film, which is located on at least one surface of the metal sheet, with dispersed fine particles and voids, wherein when a cross-section of the void-containing paint film cut in a thickness direction of the void-containing paint film is observed, the voids are present in 40 to 95 area % of a total area of the cross-section of the void-containing paint film when an average particle diameter of the fine particles is t [μm] and an average film thickness of the void-containing paint film is T [μm], a ratio t/T is in a range of 0.7 to 3.0, and an elastic modulus of the fine particles, when compressed by 10% from the thickness direction, is 30 MPa or more.

A method of forming foam material is provided, which includes mixing 100 parts by weight of a compound having cyclic carbonate groups and a foaming agent to form a foaming composition, wherein the foaming agent includes 3 to 13 parts by weight of carbamate salt and 15 to 65 parts by weight of amino compound. The foaming composition is heated to 100° C. to 170° C. for decomposing the carbamate salt into CO.sub.2 and amino compound, and the amino compound is reacted with the compound having cyclic carbonate groups to form the foam material.

A polyurethane foam may include an isocyanate polymer component and a polyol component. The polyol component may include a polyol having a molecular weight of at least about 500 kg/mol and not greater than about 6000 kg/mol. The polyurethane foam may have an elongation of at least about 500%. The polyurethane foam may further have a density of at least about 250 g/L and a tensile strength of not greater than about 1000 kPa.