发明授权
- 专利标题: Preparation of pulverulent zirconium dioxide
- 专利标题(中): 粉状二氧化锆的制备
-
申请号: US851346申请日: 1997-05-06
-
公开(公告)号: US5840641A公开(公告)日: 1998-11-24
- 发明人: Hans-Josef Sterzel , Werner Hesse
- 申请人: Hans-Josef Sterzel , Werner Hesse
- 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: DEX19619638.8 19960515
- 主分类号: C01G25/02
- IPC分类号: C01G25/02 ; C04B35/48
摘要:
In the preparation of pulverulent zirconium dioxide by dissolving a zirconium compound in formic acid, removing the volatile components and calcining the residue, a chloride-free zirconium compound is dissolved in a formic acid/water mixture and the zirconium dioxide is obtained in a manner known per se.
公开/授权文献
- USD340119S Food product 公开/授权日:1993-10-12
信息查询
IPC分类: