Abstract: An aluminum pigment usable for high-quality metallic paints and having a ratio of specific surface area in m.sup.2 /g to water coverage in m.sup.2 /g, of 5.0 or less and flakiness of 90 or more is disclosed together with a process for producing such an aluminum pigment.

Abstract: A resin-coated metallic pigment which comprises metal particles coated with a resin produced from (i) an ethylenically double-bonded unsaturated carboxylic acid and/or (ii) a phosphoric mono or diester having an ethylenical double bond and (iii) a monomer having at least three ethylenical double bonds and exhibits an alkali resistance index of up to 1.0 when subjected to an appropriate test, and a process thereof.

Abstract: Novel metal flake pigments suitable for use in coating compositions, which have a good filtration property and good dispersion stability, and which produce coatings having good specular gloss, sharpness of image and hiding power, are presented. These metal flake powders contain metal flakes, between which no substantial aggregation is formed and which have a specific surface area, determined by a BET method, of 65 through 250 m.sup.2 /cm.sup.3, and have such a particle size distribution that at least 99.5% of the flakes pass through a screen having an opening size of 20 microns and at least 90% of the flakes pass through a screen having an opening size of 5 microns. These metal flakes are produced by wet milling small metal pieces or particulates in the presence of a milling aid, including higher fatty acids and the derivatives thereof, in an amount sufficient to cover the surfaces of the metal flakes in a bi-molecule layer.