Compositions: coating or plastic – Materials or ingredients – Pigment – filler – or aggregate compositions – e.g. – stone,...
Patent
1992-08-20
1994-05-03
Bell, Mark L.
Compositions: coating or plastic
Materials or ingredients
Pigment, filler, or aggregate compositions, e.g., stone,...
106417, 106436, 106455, 106479, 106DIG3, 106437, C09C 162, C09C 136
Patent
active
053083946
ABSTRACT:
Disclosed are a pigment including a light-transparent ceramic scaly substrate, a tin compound layer coated on a surface of the substrate in an amount of 0.6 to 0.75% by weight with respect to the substrate, the amount being converted into metallic tin, a rutile type titanium dioxide layer formed on a surface of the substrate coated with the tin compound, a metal compound layer coated on a surface of the titanium dioxide layer in an amount of 0.15 to 0.6% by weight with respect to the substrate, metal of the metal compound being at least one selected from the group consisting of Bi, Sb, As, Cd, Zn, Mn, Pb and Cr, and the amount being converted into metal, and metallic glossy dots formed on the surfaces in a scattering manner, the metallic glossy dots occupying 0.05 to 95% of a total surface area of the surfaces, and a process for producing the same. Since the metallic glossy dots are formed preferentially between the titanium dioxide layer and the substrate on which the tin compound layer facilitating the metallic glossy dots formation selectively is coated. Therefore, the particle diameters of the metallic glossy dots are made uniform, and accordingly the light scattering and the light reflection are also made uniform. As a result, the pigment produces a color tone which varies less. With the production process, it is possible to stably produce a pigment producing a less varying color tone.
REFERENCES:
patent: 4038099 (1977-07-01), DeLuca, Jr. et al.
patent: 4954176 (1990-09-01), Minohara et al.
patent: 4976787 (1990-12-01), Ito et al.
Handa Jun-ichi
Ito Hiroshi
Minohara Taketoshi
Tanaka Yuji
Bell Mark L.
Einsmann Margaret
Toyota Jidosha & Kabushiki Kaisha
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