| 发明名称 |
THERMOSTABLE IRON OXIDE PIGMENTS AND PREPARATION METHOD THEREOF |
| 摘要 |
<p>Iron oxide particles containing at least 5% by weight of iron (II) content calculated as FeO are stabilized against atmospheric oxidation by a coating of at least one compound containing boron and those particles are useful as coloring pigments and magnetic particles in magnetic recording media.</p> |
| 申请公布号 |
KR910006994(B1) |
申请公布日期 |
1991.09.14 |
| 申请号 |
KR19830001235 |
申请日期 |
1983.03.26 |
| 申请人 |
BAYER AG. |
发明人 |
BIERMANN HANS P.;KOEHLER PETER;HEINE HEINRICH |
| 分类号 |
C09C1/22;C01G49/00;C09C1/00;C09C1/24;C09C3/00;C09C3/06;C09D7/00;C09D7/12;(IPC1-7):C09C1/24 |
主分类号 |
C09C1/22 |
| 代理机构 |
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代理人 |
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| 主权项 |
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| 地址 |
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