Compositions: coating or plastic – Materials or ingredients – Pigment – filler – or aggregate compositions – e.g. – stone,...
Patent
1989-09-18
1990-12-25
Dixon, Jr., William R.
Compositions: coating or plastic
Materials or ingredients
Pigment, filler, or aggregate compositions, e.g., stone,...
106440, 106441, 106453, C04B 1120
Patent
active
049799916
ABSTRACT:
A production process of pigment according to this invention comprises the steps of: a first step of forming an inorganic compound coating layer on the entire surfaces of scaly substrates made of ceramic; a second step of forming metallic glossy dots on the surfaces of the inorganic compound coating layer in a scattered manner by an electroless plating, and the metallic glossy dots occupying from 0.05 to 95% of the surfaces of the inorganic compound coating layer with respect to the total surface area of the inorganic compound coating layer; and a third step of irradiating ultraviolet ray on particles formed by the second step. The impurities and the like, which adversely affect the color hue of the pigment, have been discolored or faded away by the ultraviolet ray irradiation in the third step. Accordingly, the pigment having good weather resistance can be produced readily and stably by the present invention.
REFERENCES:
patent: 4038099 (1977-07-01), DeLuca et al.
patent: 4134776 (1979-01-01), Rieger et al.
patent: 4828623 (1989-05-01), Nita et al.
patent: 4867794 (1989-09-01), Ambrosius et al.
Handa Jun-ichi
Itou Hiroshi
Minohara Taketoshi
Takagi Yoshio
Dixon Jr. William R.
Gallo Chris
Toyota Jidosha & Kabushiki Kaisha
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