发明授权
- 专利标题: Purification of alkali carbonate containing a fluorine compound
- 专利标题(中): 含氟化合物的碱金属碳酸盐的净化
-
申请号: US603107申请日: 1975-08-08
-
公开(公告)号: US3980754A公开(公告)日: 1976-09-14
- 发明人: Susumo Otsuki , Junji Arika , Mitsunobu Kashibe , Kosuke Takeshige
- 申请人: Susumo Otsuki , Junji Arika , Mitsunobu Kashibe , Kosuke Takeshige
- 申请人地址: JA
- 专利权人: Toyo Soda Manufacturing Co., Ltd.
- 当前专利权人: Toyo Soda Manufacturing Co., Ltd.
- 当前专利权人地址: JA
- 优先权: JA49-132224 19741116
- 主分类号: C01D7/26
- IPC分类号: C01D7/26 ; C01B1/28 ; C01D1/32
摘要:
An alkali carbonate containing a fluorine compound is purified by dissolving the crude alkali carbonate in an aqueous solution or suspension of magnesium bicarbonate in order to transfer the fluorine impurity into the resulting colloidal flocculated precipitate whereby the fluorine is substantially separated from the aqueous solution of the alkali carbonate.
公开/授权文献
- US5700296A Azo compound and a polarizing film containing the same 公开/授权日:1997-12-23
信息查询
IPC分类: