Abstract: Thermosetting colored powder paints to be used in electrostatic painting processes are described. These powder paints comprise not more than 30% by weight of at least one monochromatic pigment coated with at least one aldehyde and/or ketone resin, preferably 5 to 30% by weight, and up to 95% by weight of conversion agent, preferably 70 to 95% by weight; more than 90% of the particles of said at least one coated monochromatic pigment and said conversion agent have a particle size of between 10 and 40 microns, preferably between 15 and 35 microns. The coated monochromatic pigment and the conversion agent have the same specific weight which is between 1.3 and 1.7 g/cc.

Abstract: Coating of organic and inorganic pigments with aldehyde or ketone resins, comprising a chemical compound consisting of particles of solid organic and inorganic substances, both defined as pigments, in that they are substances which absorb a fraction of the light and reflect the complementary part thereof, coated with aldehyde or ketone resins. The latter are deposited on the surface of the pigment by means of a process which envisages melting of the resin, consequent wetting and coating of the entire surface of the pigment with the resin in the melted state, the consequent cooling and subsequent step of atomization by means of mechanical systems operating in temperature conditions lower than 10° C., by means of cryogenic processes.

Abstract: Thermosetting coloured powder paints to be used in electrostatic painting processes are described. These powder paints comprise not more than 30% by weight of at least one monochromatic pigment coated with at least one aldehyde and/or ketone resin, preferably 5 to 30% by weight, and up to 95% by weight of conversion agent, preferably 70 to 95% by weight; more than 90% of the particles of said at least one coated monochromatic pigment and said conversion agent have a particle size of between 10 and 40 microns, preferably between 15 and 35 microns. The coated monochromatic pigment and the conversion agent have the same specific weight which is between 1.3 and 1.7 g/cc.

Abstract: Coating of inorganic pigments with aldehyde or ketone resins and at least one dispersant, comprising a chemical compound consisting of particles of solid organic and inorganic substances, both defined as pigments, in that they absorb a fraction of the light and reflect the complementary part thereof, coated with aldehyde or ketone resins. The latter are deposited on the surface of the pigment by means of a process which envisages melting of the resin, wetting and coating of the entire surface of the pigment with the resin in the melted state, and cooling and atomization by means of mechanical systems operating in temperature conditions lower than 10° C., by cryogenic processes. The resulting product may be used as a semifinished product for the colouring and pigmentation of powder paints and plastics as a monochromatic colouring material and/or may also be used, after dissolving in a solvent, as a pigmented paste.

Abstract: Coating of organic and inorganic pigments with aldehyde or ketone resins, comprising a chemical compound consisting of particles of solid organic and inorganic substances, both defined as pigments, in that they are substances which absorb a fraction of the light and reflect the complementary part thereof, coated with aldehyde or ketone resins. The latter are deposited on the surface of the pigment by means of a process which envisages melting of the resin, consequent wetting and coating of the entire surface of the pigment with the resin in the melted state, the consequent cooling and subsequent step of atomization by means of mechanical systems operating in temperature conditions lower than 10° C., by means of cryogenic processes.