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1. (WO2018198294) LUSTROUS PIGMENT HAVING ELECTROMAGNETIC WAVE-TRANSMITTING CHARACTERISTICS, COMPOSITION CONTAINING THIS PIGMENT, AND COATED BODY

Pub. No.:    WO/2018/198294    International Application No.:    PCT/JP2017/016853
Publication Date: Fri Nov 02 00:59:59 CET 2018 International Filing Date: Fri Apr 28 01:59:59 CEST 2017
IPC: C09C 1/30
A61K 8/29
A61Q 1/00
C09C 3/06
C09D 5/36
C09D 11/00
C09D 17/00
Applicants: NIPPON SHEET GLASS COMPANY, LIMITED
日本板硝子株式会社
Inventors: NAKAMURA Koichiro
中村 浩一郎
Title: LUSTROUS PIGMENT HAVING ELECTROMAGNETIC WAVE-TRANSMITTING CHARACTERISTICS, COMPOSITION CONTAINING THIS PIGMENT, AND COATED BODY
Abstract:
The present invention provides a lustrous pigment which enables the achievement of a good balance between electromagnetic wave-transmitting properties and appearance having a neutral color with high reflectance. A lustrous pigment according to the present invention comprises: a glass flake 1; and a titanium oxide layer 2 and a silver layer 3, which are sequentially formed on the glass flake 1 in this order. If optical thicknesses are expressed in the unit of nm, the product of the optical thickness of the glass flake 1 and the optical thickness of the titanium oxide layer 2 is from 61,000 to 66,000 (inclusive), while the physical thickness of the silver layer 3 is from 35 nm to 55 nm (inclusive).