| 发明名称 |
METHOD FOR PURIFYING DIFLUOROMETHANE |
| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a method for purifying difluoromethane from a mixture containing the difluoromethane and hydrogen fluoride. SOLUTION: At least one kind selected from dichloromethane and chlorofluoromethane is used as an extractant.</p> |
| 申请公布号 |
JP2001233808(A) |
申请公布日期 |
2001.08.28 |
| 申请号 |
JP20000044967 |
申请日期 |
2000.02.22 |
| 申请人 |
ASAHI GLASS CO LTD |
发明人 |
YOKOYAMA TAKAAKI;YANASE NOBUKAZU;SUZUKI YASUHIRO |
| 分类号 |
C07C17/38;C07C19/08;(IPC1-7):C07C17/38 |
主分类号 |
C07C17/38 |
| 代理机构 |
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