发明名称 |
Process for manufacturing fine zirconium oxide powder |
摘要 |
A process for manufacturing fine zirconium oxide powder comprises adding a hydroxide of at least one metal selected from calcium, magnesium, yttrium and a lanthanide series element to a zirconia sol, which is dehydrated, dried and calcined. A zirconia sol prepared by hydrolyzing under heating an aqueous solution containing a zirconium salt, zirconium hydroxide or zirconia hydrate and then filtering the hydrolized aqueous solution through a ultra-filtration membrane is preferably used.
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申请公布号 |
US4985229(A) |
申请公布日期 |
1991.01.15 |
申请号 |
US19870100723 |
申请日期 |
1987.09.25 |
申请人 |
NISSAN CHEMICAL INDUSTRIES, LTD. |
发明人 |
OBITSU, MASAMICHI;TOMI, ISAO;KAGA, TAKAO |
分类号 |
C01G25/00;C01G25/02;C04B35/48 |
主分类号 |
C01G25/00 |
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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