| 摘要 |
Coating of inorganic pigments with aldehyde or ketone resins and at least one dispersant, comprising a chemical compound consisting of particles of s olid organic and inorganic substances, both defined as pigments, in that the y are substances which absorb a fraction of the light and reflect the comple mentary part thereof, coated with aldehyde or ketone resins. The latter are deposited on the surface of the pigment by means of a process which envisage s 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 a nd subsequent step of atomization by mearts of mechanical systems operating in temperature conditions lower than 10°C, by means of cryogenic processes. The product resulting from this invention will be used as a semifinished pro duct for the colouring and pigmentation of powder paints and plastics as a m onochromatic colouring material and or will also be used, after dissolving i n a solvent, as a pigmented paste in the liquid paints industry.
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