发明申请
- 专利标题: Cobalt-Contaning Black Pigment Particulates
- 专利标题(中): 钴黑色颜料颗粒
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申请号: US11662733申请日: 2005-09-16
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公开(公告)号: US20080075653A1公开(公告)日: 2008-03-27
- 发明人: Tomoyuki Hoshino , Koichi Katsuyama , Shoichi Fujiyasu , Takashi Nakashima
- 申请人: Tomoyuki Hoshino , Koichi Katsuyama , Shoichi Fujiyasu , Takashi Nakashima
- 申请人地址: JP Tokyio 141-8584
- 专利权人: MITSUI MINING & SMELTING CO., LTD.
- 当前专利权人: MITSUI MINING & SMELTING CO., LTD.
- 当前专利权人地址: JP Tokyio 141-8584
- 优先权: JP2004-272609 20040917; JP2004-309171 20041025
- 国际申请: PCT/JP05/17150 WO 20050916
- 主分类号: C01G51/04
- IPC分类号: C01G51/04
摘要:
Disclosed is a black pigment having adequate degree of blackness and high electrical resistance at the same time. Specifically disclosed is a granular black pigment containing cobalt which is characterized in that it is composed of an oxide containing at least cobalt and the divalent cobalt content accounts for 40-70% of the total cobalt content. It is preferable that the total cobalt content in a whole particle is 60-80% by mass, and the divalent cobalt content in a whole particle is 20-50% by mass. It is also preferable that the primary particle diameter is 0.02-0.6 μm.
公开/授权文献
- US07438754B2 Cobalt-containing black pigment particulates 公开/授权日:2008-10-21
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