Invention Grant
- Patent Title: Composite oxide black pigment and method for producing same
- Patent Title (中): 复合氧化物黑色颜料及其制造方法
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Application No.: US14357109Application Date: 2012-12-18
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Publication No.: US08968460B2Publication Date: 2015-03-03
- Inventor: Kenichi Yamane , Toru Kawakami , Akira Nishio , Hiroyoshi Terada
- Applicant: Dainichiseika Color & Chemicals Mfg. Co., Ltd.
- Applicant Address: JP Tokyo
- Assignee: Dainichiseika Color & Chemicals Mfg. Co., Ltd.
- Current Assignee: Dainichiseika Color & Chemicals Mfg. Co., Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Hamre, Schumann, Mueller & Larson, P.C.
- Priority: JP2011-284450 20111226
- International Application: PCT/JP2012/082729 WO 20121218
- International Announcement: WO2013/099690 WO 20130704
- Main IPC: C09C1/24
- IPC: C09C1/24 ; C08K3/10

Abstract:
To provide a Cu—Mn—Fe-based complex inorganic oxide black pigment having a more vivid bluish hue than a Cu—Mn—Fe-based complex inorganic oxide black pigment obtained by a conventional wet method. A Cu—Mn—Fe-based complex inorganic oxide black pigment having a more vivid bluish hue is disclosed. The complex inorganic oxide black pigment has a spinel structure composed of oxides of copper, manganese and iron as main constituent metals, the molar ratio of copper/manganese/iron is in a range of 3 to 8/5 to 10/1, at least one divalent metal element other than the main constituent metals has been introduced, and the molar ratio of (copper+the divalent metal element)/(manganese+iron) is in a range of 1 to 1.6/2. A production process of the black pigment is also disclosed.
Public/Granted literature
- US20140318416A1 COMPOSITE OXIDE BLACK PIGMENT AND METHOD FOR PRODUCING SAME Public/Granted day:2014-10-30
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