Bright Pigment, Method for Producing the Pigment, and Waterborne Resin Composition Containing the Pigment
AssigneeNippon Glass Co., Ltd.
InventorsTakeaki Kitamura, Yusuke Kimura
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Abstract
A bright pigment of the present invention includes a scaly inorganic base 10, a silver-containing coating 11 that covers the inorganic base 10 and contains silver or a silver alloy, and a yellowing-suppressing coating 2 that covers the inorganic base 10 from outside of the silver-containing coating 11 and contains a metal compound functioning as an oxidizing agent. The metal compound is preferably at least one selected from the group consisting of a hydroxide of metal, an oxide hydrate of metal, and a salt of an oxide hydrate of metal, and the metal is at least one selected from the group consisting of tungsten, molybdenum, bismuth, vanadium, or cerium.
Claims20
A bright pigment, comprising:
- a scaly inorganic base;
- a silver-containing coating that covers the inorganic base and contains silver or a silver alloy;
- and
- a yellowing-suppressing coating that covers the inorganic base from outside of the silver-containing coating and contains a metal compound functioning as an oxidizing agent.
A method for producing a bright pigment, comprising the steps of:
- covering a surface of a scaly inorganic base with a silver-containing coating containing silver or a silver alloy;
- and
- forming a yellowing-suppressing coating that covers the inorganic base from outside of the silver-containing coating and contains a metal compound functioning as an oxidizing agent.
Dependencies are inferred from the claim text.