Abstract: The present invention provides an aluminum pigment having a high grade of optical characteristics, such as a high brightness and a high flip-flop effect. In particular, an aluminum pigment having a mean particle diameter d50 of 5-35 &mgr;m, a ratio of the mean particle diameter d50 (&mgr;m) to a mean thickness t (&mgr;m) of 30-90, and a mean surface roughness Ra of 20 nm or less, is disclosed. A method for manufacturing the aluminum pigment of the invention is also provided.
Abstract: A composite metal powder composition according to the present invention is a composition containing composite metal powder obtained in such a manner that an isocyanate compound is chemically bonded to the surface of surface-treated metal particles and a phosphorus compound is further chemically bonded to the isocyanate compound through an urethane bond and can be used as an excellent pigment for an aqueous paint.
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.
Type:
Grant
Filed:
September 2, 1986
Date of Patent:
June 14, 1988
Assignee:
Asahi Kasei Metals Limited
Inventors:
Katuyuki Higashi, Yasunobu Imasato, Kiyoshi Iri
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