| 发明名称 |
Preparation of acicular alpha -Fe2O3 |
| 摘要 |
Finely divided, acicular and pore-free alpha -Fe2O3 is prepared from iron(III) salts in the presence of one or more organic substances which form complexes with iron(III) ions, in alkaline suspension, at from 80 DEG to 250 DEG C.
|
| 申请公布号 |
US4826671(A) |
申请公布日期 |
1989.05.02 |
| 申请号 |
US19870024564 |
申请日期 |
1987.03.11 |
| 申请人 |
BASF AKTIENGESELLSCHAFT |
发明人 |
ARNDT, VOLKER;FESER, RAINER;STECK, WERNER;JAKUSCH, HELMUT |
| 分类号 |
H01F1/11;C01G49/00;C01G49/06;G11B5/706;(IPC1-7):C01G49/06 |
主分类号 |
H01F1/11 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
