Invention Grant
- Patent Title: Photoluminescent pigment and photoluminescent coating composition
- Patent Title (中): 发光颜料和光致发光涂料组合物
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Application No.: EP13188760.6Application Date: 2008-04-28
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Publication No.: EP2687563B1Publication Date: 2018-04-04
- Inventor: Kitamura, Takeaki , Wakamiya, Takashi , Yagyu, Tomohiro
- Applicant: Nippon Sheet Glass Company, Limited
- Applicant Address: 5-27, Mita 3-chome Minato-ku Tokyo 108-6321 JP
- Assignee: Nippon Sheet Glass Company, Limited
- Current Assignee: Nippon Sheet Glass Company, Limited
- Current Assignee Address: 5-27, Mita 3-chome Minato-ku Tokyo 108-6321 JP
- Agency: Hart-Davis, Jason
- Priority: JP2007120283 20070427
- Main IPC: C09C1/00
- IPC: C09C1/00 ; C09D5/29 ; C09D7/12 ; C03B17/06 ; C03B37/005 ; C04B35/628 ; C09K11/02 ; C08K3/22 ; C08K3/34 ; C08K3/40 ; C08K9/02

Abstract:
The bright pigment of the present invention includes flaky particles and a metal oxide layer coating at least a part of the surface of each flaky particle. The bright pigment or the flaky particles of the present invention have a particle size distribution in which the particle size at 99% of the cumulative volume from the smaller particle size is 48 µm or less, and the maximum particle size is 62 µm or less. The flaky particles are made of a material having a refractive index in the range of 1.4 to 1.8. The flaky particles have a thickness distribution in which the frequency of the particles having a thickness in the range of 0.8 µm to 1.9 µm is 90% or more by volume, or the frequency of the particles having a thickness in the range of 0.01 µm to 0.35 µm is 90% or more by volume.
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