| 发明名称 |
Production of difluoromethane |
| 摘要 |
PCT No. PCT/GB94/00498 Sec. 371 Date Sep. 6, 1995 Sec. 102(e) Date Sep. 6, 1995 PCT Filed Mar. 14, 1994 PCT Pub. No. WO94/21580 PCT Pub. Date Sep. 29, 1994There is provided a process for the production of difluoromethane which comprises contacting a dichloromethane with hydrogen fluoride in the presence of a fluorination catalyst comprising zinc or a compound of zinc and metal oxide, fluoride or oxyfluoride.
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| 申请公布号 |
US5763704(A) |
申请公布日期 |
1998.06.09 |
| 申请号 |
US19950522241 |
申请日期 |
1995.09.06 |
| 申请人 |
IMPERIAL CHEMICAL INDUSTRIES PLC |
发明人 |
SCOTT, JOHN DAVID;WATSON, MICHAEL JOHN;BONNIFACE, DAVID WILLIAM |
| 分类号 |
B01J21/04;B01J23/06;B01J23/20;B01J23/62;B01J23/70;B01J27/12;C07B61/00;C07C17/20;C07C19/08;(IPC1-7):C07C17/08 |
主分类号 |
B01J21/04 |
| 代理机构 |
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