| 发明名称 |
Spherical magnetite particles. |
| 摘要 |
<p>Powdery spherical magnetite particles having an apparent density of from 0.40 to 1.00 g/cm<3> and containing from 0.1 to 5.0 atomic % of Si with respect to Fe are useful as the black pigment for a paint or as magnetic particles for a toner in electrophotography. </p> |
| 申请公布号 |
EP0187434(A2) |
申请公布日期 |
1986.07.16 |
| 申请号 |
EP19850302135 |
申请日期 |
1985.03.27 |
| 申请人 |
TODA KOGYO CORP |
发明人 |
MORI, KEISO;KAWABATA, MASARU;KUNISHIGE, MASAO;HORIISHI, NANAO;TODA, KOJI |
| 分类号 |
C01G49/00;C01G49/08;C09D7/12;G03G9/083;G11B5/706;H01F1/11;(IPC1-7):H01F1/11;C09D7/00;G03G9/14 |
主分类号 |
C01G49/00 |
| 代理机构 |
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代理人 |
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| 主权项 |
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