发明名称 |
Manufacture of hydrofluoroalkanesulfonic acids |
摘要 |
A process for manufacture of hydrofluoroalkanesulfonic acid with at least one hydrogen bonded to the carbon atom adjacent to the carbon atom bonded to the sulfonic acid group comprising: contacting a fluoroolefin with sulfite in an aqueous solution adjusted to about pH 4 to pH 12; removing water from the solution to form a solid; directly treating the solid with oleum; and distilling the hydrofluoroalkanesulfonic acid therefrom. Also a process for manufacture of potassium hydrofluoroalkanesulfonate in high purity is described.
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申请公布号 |
US7897807(B2) |
申请公布日期 |
2011.03.01 |
申请号 |
US20100709531 |
申请日期 |
2010.02.22 |
申请人 |
E. I. DU PONT DE NEMOURS AND COMPANY |
发明人 |
HARMER MARK ANDREW;JUNK CHRISTOPHER P.;SCHNEPP ZOE |
分类号 |
C07C309/04;C07C309/19 |
主分类号 |
C07C309/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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