A powder coating composition comprising: (a) a first acrylic powder resin having a hydroxyl value of at least about 180; (b) a second acrylic powder resin having a hydroxyl value between about 45 and about 80; (c) a crosslinker reactive with the hydroxyl functional acrylic resins; and (d) an acicular filler.

Disclosed is a method to produce composite materials, which contain customized mixes of nano- and/or micro-particles with tailored electromagnetic spectral properties, structural elements based thereon, in particular layers, but also bulk materials including inhomogeneous bulk materials. In some embodiments the IR-reflectivity is enhanced predominantly independently of reflectivity for visible wavelength. The enhanced IR-reflectivity is achieved by combining spectral properties from a plurality of nano- and/or micro-particles of distinct size distribution, shape distribution, chemical composition, crystal structure, and crystallinity distribution. This enables to approximate desired target spectra better than know solutions, which comprise only a single type of particles and/or an uncontrolled natural size distribution. Furthermore disclosed are methods of manufacturing such materials, including ceramics, clay, and concrete, as well as applications related to design and construction of buildings or other confined spaces.

A pigment pellet preparation, comprises one or more effect pigment and one or more thermosetting resin. The effect pigment is dispersed in the thermosetting resin. The thermosetting resin has 3 or more reactive terminal groups and has an acid number from about 10 to about 50 mg KOH/g resin. The preparation comprises from about 70% to about 90% by weight of one or more effect pigment and from about 5% to about 35% by weight of one or more thermosetting resin. The pigment and thermosetting resin comprise about 95% or more of the preparation. The pellets have a diameter of about 0.5 mm to about 5 mm and a length of about 1 mm to about 5 cm.

In a powder coating process, a primer step is implemented prior to electrostatically applying the powder coating, either in advance of preheating the object to be coated or subsequent thereto, depending upon the selection of materials used in the object to be coated, the primer material being diluted fabric softener applied in a fine mist spray or fog to the object.

The invention relates to the use of a powder comprising at least one polyamide and at least one epoxy resin for producing an electrically insulating coating on a surface. The invention also relates to an electricity transmitting component at least partially covered with a coating that can be obtained by melting such a powder.

Thermosetting powdered coating compositions comprising (a) a high Acid Value carboxylic acid functional polyester resin having an Acid Value of at least 100 mg KOH/g and a functionality of at least 4.5, (b) a low Acid Value carboxylic acid functional polyester resin having an Acid Value of 20 to 50 mg KOH/g and a functionality of about 2.5 or less, and (c) a cross-linking agent. The high Acid Value polyester resin is the reaction product of a polycarboxylic acid or its anhydride reacted with a polyester polyol obtained from reacting 0 mol % to 100 mol % of isophthalic acid and/or 0 to 100 mol % terephthalic acid, or a mixture thereof, with a polyol mixture comprising at least one diol and at least one polyol having at least three hydroxyl groups. The thermosetting powdered coating compositions provide coatings with low gloss levels that can be adjusted from a gloss level of less than 1 to 40 or less, when measured at an angle of 60, by varying the ratios of the high Acid Value and low Acid Value polyester resins in the composition.

Aqueous matte coating compositions and methods for applying aqueous matte coating compositions to substrates are disclosed. The compositions comprise (a) from 10 to 65 wt % of a first acrylic bead having a calculated glass transition temperature (Tg) of from 30 to 10 C. and an average diameter particle of from 0.1 to 2 m, (b) from 20 to 80 wt % of a second acrylic bead having a calculated Tg of from 60 to 0 C. and an average particle diameter of from 0.5 to 30 optionally (c) from 10 to 30 wt % of a polymer binder having an average particle diameter of 0.03 to 0.5 and (d) a slip additive. In some embodiments, the slip additive comprises a silicone emulsion and a wax dispersion. In some embodiments, the slip additive comprises a polyurethane dispersion. Methods for applying aqueous matte coating compositions are also disclosed.

Disclosed is a method to produce composite materials, which contain customized mixes of nano- and/or micro-particles with tailored electromagnetic spectral properties, structural elements based thereon, in particular layers, but also bulk materials including inhomogeneous bulk materials. In some embodiments the IR-reflectivity is enhanced predominantly independently of reflectivity for visible wavelength. The enhanced IR-reflectivity is achieved by combining spectral properties from a plurality of nano- and/or micro-particles of distinct size distribution, shape distribution, chemical composition, crystal structure, and crystallinity distribution. This enables to approximate desired target spectra better than know solutions, which comprise only a single type of particles and/or an uncontrolled natural size distribution. Furthermore disclosed are methods of manufacturing such materials, including ceramics, clay, and concrete, as well as applications related to design and construction of buildings or other confined spaces.

This disclosure relates to a curable, matte, preferably dull-matte, powder coating composition, accommodating superior chemical resistance through a complex of cross linkable fluoro containing organic compounds (A), preferably fluoro containing oligomers and/or polymers, and one or more cross linker(s) (B) able to react with (A), wherein the powder coating formulation additionally comprises one or more compound(s) (C) able to react with (A) and/or (B).

A powder coating composition comprising: (a) a first acrylic powder resin having a hydroxyl value of at least about 180; (b) a second acrylic powder resin having a hydroxyl value between about 45 and about 80; (c) a crosslinker reactive with the hydroxyl functional acrylic resins; and (d) an acicular filler.