A water-repellent coat according to the present disclosure includes: an undercoat layer that is formed on a surface of a base material and contains a base resin, at least one kind of spherical particles, and water-repellent particles, the at least one kind of spherical particles having an average particle diameter of 2 μm or more and 1000 μm or less and being selected from the group consisting of spherical molten silica particles, spherical molten alumina particles, and spherical silicone resin particles, the water-repellent particles having an average particle diameter of 5 nm or more and 30 nm or less; and a topcoat layer formed on the undercoat layer and containing a water-repellent resin and the water-repellent particles contained in the undercoat layer.

A water-repellent coat according to the present disclosure includes: an undercoat layer that is formed on a surface of a base material and contains a base resin, at least one kind of spherical particles, and water-repellent particles, the at least one kind of spherical particles having an average particle diameter of 2 μm or more and 1000 μm or less and being selected from the group consisting of spherical molten silica particles, spherical molten alumina particles, and spherical silicone resin particles, the water-repellent particles having an average particle diameter of 5 nm or more and 30 nm or less; and a topcoat layer formed on the undercoat layer and containing a water-repellent resin and the water-repellent particles contained in the undercoat layer.

The present disclosure relates to an aqueous epoxy resin based shop primer comprising: a) a film-forming resin composition comprising: i) an epoxy resin component; and ii) an aqueous carrier; b) an aqueous curing system comprising an epoxy reactive curing agent; wherein the epoxy resin component comprises: an epoxy resin matrix and a rubber modified epoxy resin; and wherein the shop primer is substantially free of zinc. The present disclosure also relates to an article comprising a metal substrate having at least one major surface; and a shop primer layer formed by the above mentioned aqueous epoxy resin-based shop primer directly applied to the major surface.

The present disclosure relates to an aqueous epoxy resin based shop primer comprising: a) a film-forming resin composition comprising: i) an epoxy resin component; and ii) an aqueous carrier; b) an aqueous curing system comprising an epoxy reactive curing agent; wherein the epoxy resin component comprises: an epoxy resin matrix and a rubber modified epoxy resin; and wherein the shop primer is substantially free of zinc. The present disclosure also relates to an article comprising a metal substrate having at least one major surface; and a shop primer layer formed by the above mentioned aqueous epoxy resin-based shop primer directly applied to the major surface.

A method for producing a coloured metal-containing powder, which can be used as a metallic pigment, said method comprising: preparing a bulk metal-containing material in the form of powder (which acts as a particle substrate), which is a ferromanganese (FeMn) powder; and heating said material up to a temperature ranging from 100° C. to 1000° C. in a container, in the presence of oxygen. Preferably, the bulk powder is a refined FeMn powder. It is also an object of the disclosure the coloured metal-containing powder obtainable by means of the disclosed method, in the absence of surface modifiers, wherein it can have a blue, purple/violet and gold colour, or any intermediate tonality, depending on the metal oxide content. Said oxides are present forming an outer layer on the particles of the powder. The disclosure also refers to the use of the powder as a metallic pigment.

A method for producing a coloured metal-containing powder, which can be used as a metallic pigment, said method comprising: preparing a bulk metal-containing material in the form of powder (which acts as a particle substrate), which is a ferromanganese (FeMn) powder; and heating said material up to a temperature ranging from 100° C. to 1000° C. in a container, in the presence of oxygen. Preferably, the bulk powder is a refined FeMn powder. It is also an object of the disclosure the coloured metal-containing powder obtainable by means of the disclosed method, in the absence of surface modifiers, wherein it can have a blue, purple/violet and gold colour, or any intermediate tonality, depending on the metal oxide content. Said oxides are present forming an outer layer on the particles of the powder. The disclosure also refers to the use of the powder as a metallic pigment.

A method produces a substrate shielded from electromagnetic radiation. The method includes i) providing a first polymer material (a) or a precursor thereof containing at least one conductive filler and at least a second polymer material (b) or precursor thereof; ii) obtaining a substrate by subjecting the first polymer material (a) or the precursor thereof and the second polymer material (b) or the precursor thereof to shaping with material bonding of the first polymer material (a) and the second polymer material (b), and polymerizing, if present, the precursors; and iii) at least partially surrounding an electronic component with the substrate obtained in step ii). A polymer component of the first polymer material (a) includes a thermoplastic elastomer or at least one thermoplastic elastomer, selected from the group consisting of, e.g., thermoplastic polyamide elastomers, thermoplastic copolyester elastomers, thermoplastic olefin-based elastomers, thermoplastic styrene block copolymers, polyether block amides, and mixtures thereof.

A method produces a substrate shielded from electromagnetic radiation. The method includes i) providing a first polymer material (a) or a precursor thereof containing at least one conductive filler and at least a second polymer material (b) or precursor thereof; ii) obtaining a substrate by subjecting the first polymer material (a) or the precursor thereof and the second polymer material (b) or the precursor thereof to shaping with material bonding of the first polymer material (a) and the second polymer material (b), and polymerizing, if present, the precursors; and iii) at least partially surrounding an electronic component with the substrate obtained in step ii). A polymer component of the first polymer material (a) includes a thermoplastic elastomer or at least one thermoplastic elastomer, selected from the group consisting of, e.g., thermoplastic polyamide elastomers, thermoplastic copolyester elastomers, thermoplastic olefin-based elastomers, thermoplastic styrene block copolymers, polyether block amides, and mixtures thereof.

A liquid applied, silicone-based air and water barrier coating composition and its use as a silicone-based air and water barrier is provided. The barrier is generally vapour permeable and suitable for the construction industry. The liquid coating composition generally has a shelf-life of at least 9 months. The liquid coating composition comprises: (i) a crosslinked polysiloxane dispersion comprising (c) a surfactant and (d) water; (ii) a combination of rheology modifiers and at least one of the following ingredients: (iii) one or more fillers and/or (iv) one or more stabilizers.

A liquid applied, silicone-based air and water barrier coating composition and its use as a silicone-based air and water barrier is provided. The barrier is generally vapour permeable and suitable for the construction industry. The liquid coating composition generally has a shelf-life of at least 9 months. The liquid coating composition comprises: (i) a crosslinked polysiloxane dispersion comprising (c) a surfactant and (d) water; (ii) a combination of rheology modifiers and at least one of the following ingredients: (iii) one or more fillers and/or (iv) one or more stabilizers.