发明授权
- 专利标题: Preparation of acicular alpha-Fe.sub.2 O.sub.3
- 专利标题(中): 针状α-Fe2O3的制备
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申请号: US24563申请日: 1987-03-11
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公开(公告)号: US4774072A公开(公告)日: 1988-09-27
- 发明人: Volker Arndt , Bernd Meyer , Rainer Feser , Werner Steck , Helmut Jakusch
- 申请人: Volker Arndt , Bernd Meyer , Rainer Feser , Werner Steck , Helmut Jakusch
- 申请人地址: DEX Ludwigshafen
- 专利权人: BASF Aktiengesellschaft
- 当前专利权人: BASF Aktiengesellschaft
- 当前专利权人地址: DEX Ludwigshafen
- 优先权: DEX3608540 19860314
- 主分类号: C01G49/06
- IPC分类号: C01G49/06 ; G11B5/706 ; H01F1/11
摘要:
Acicular .alpha.-Fe.sub.2 O.sub.3 is prepared from iron(III) salts by heating an alkaline aqueous suspension of iron(III) hydroxide in the presence of one or more organic substances which form complexes with iron(III) ions to a temperature of 100.degree. C. or less.
公开/授权文献
- US6123529A Scroll compressor 公开/授权日:2000-09-26
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