| 发明名称 |
Improved process for the manufacture of 1,1,1-trifluorodichloroethane and 1,1,1,2-tetrafluorochloroethane. |
| 摘要 |
<p>An improved gas-phase process for the manufacture of 1,1,1-trifluorodichloroethane and/or 1,1,1,2-tetrafluorochloroethane by contacting a suitable tetrahaloethylene and/or pentahaloethane with hydrogen fluoride in the presence of Cr2O3, prepared by pyrolysis of (NH4)2Cr2O7, the reaction being conducted under controlled conditions whereby the production of pentafluoroethane is minimized.</p> |
| 申请公布号 |
EP0313061(A2) |
申请公布日期 |
1989.04.26 |
| 申请号 |
EP19880117532 |
申请日期 |
1988.10.21 |
| 申请人 |
E.I. DU PONT DE NEMOURS AND COMPANY |
发明人 |
GUMPRECHT, WILLIAM HENRY;MANZER, LEO ERNEST;RAO, VELLIYUR NOTT MALLIKARJUNA |
| 分类号 |
C07C17/08;C07C17/087;C07C17/20;C07C17/21;C07C19/08;C07C19/12;C07C67/00;C07B61/00;B01J23/26;C07C17/00 |
主分类号 |
C07C17/08 |
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