发明授权
- 专利标题： Method for producing dichloropentafluoropropanes
- 专利标题（中）： 二氯五氟丙烷的制备方法
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申请号： US08157429申请日： 1993-11-26
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公开(公告)号： US06191327B1公开(公告)日： 2001-02-20
- 发明人: Shinsuke Morikawa , Keiichi Ohnishi , Hidekazu Okamoto , Toshihiro Tanuma
- 申请人： Shinsuke Morikawa , Keiichi Ohnishi , Hidekazu Okamoto , Toshihiro Tanuma
- 优先权： JP2-321221 19901127; JP3-160099 19910603; WOPCT/JP91/01627 19911127
- 主分类号： C07C2118
- IPC分类号： C07C2118
摘要：
The present invention relates to a simple method for producing 3,3-dichloro-1,1,1,2,2-pentafluoropropane (R225ca) and 1,3-dichloro-1,1,2,2,3-pentafluoropropane (R225cb) in good yield and at high selectivity by reacting tetrafluoroethylene (C2F4) and dichlorofluoromethane (R21) in the presence of a certain specific catalyst. The specific catalyst in the present invention is (1) a catalyst comprising halogenated oxide containing at least one element of Group 4, Group 5 and Group 13 such as Ti, Zr, Hf, V, B and Ga, or (2) a catalyst comprising halogenated oxide containing at least one element selected from Group 4, Group 5 and Group 13 such as Ti, Zr, Hf, V, B, Al and Ga and at least one element selected from Group 2, Group 6, Group 12 and Group 14 such as Ba, W, Zn, Si, Bi and P.