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公开(公告)号:US06844474B1
公开(公告)日:2005-01-18
申请号:US08959748
申请日:1997-10-28
IPC分类号: B01J23/26 , C07B61/00 , C07C17/20 , C07C17/383 , C07C19/08 , C07C17/00 , C07C17/158 , C07C17/38
CPC分类号: C07C17/206 , C07C19/08
摘要: The present invention provides a vapor phase process for the production of difluoromethane, HFC-32. The process of this invention provides for the preparation of HFC-32 by a process that exhibits both good product yield and selectivity.
摘要翻译: 本发明提供用于生产二氟甲烷HFC-32的气相方法。 本发明的方法提供通过显示出良好的产物收率和选择性的方法制备HFC-32。
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公开(公告)号:US06365580B1
公开(公告)日:2002-04-02
申请号:US09425150
申请日:1999-10-21
IPC分类号: C07C1908
CPC分类号: C07C17/206 , C07C19/08
摘要: The present invention provides a vapor phase process for the production of difluoromethane, HFC-32. The process of this invention provides for the preparation of HFC-32 by a process that exhibits both good product yield and selectivity.
摘要翻译: 本发明提供用于生产二氟甲烷HFC-32的气相方法。 本发明的方法提供通过显示出良好的产物收率和选择性的方法制备HFC-32。
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公开(公告)号:US5763708A
公开(公告)日:1998-06-09
申请号:US530649
申请日:1995-09-20
CPC分类号: C07C17/206
摘要: The present invention provides a vapor phase process for the production of difluoromethane, HFC-32. The process of this invention provides for the preparation of HFC-32 by a process that exhibits both good product yield and selectivity.
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