Invention Grant
- Patent Title: Manufacture of hydrofluoroalkanesulfonic acids
- Patent Title (中): 制造氢氟烷基磺酸
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Application No.: US11447713Application Date: 2006-06-06
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Publication No.: US07683209B2Publication Date: 2010-03-23
- Inventor: Mark Andrew Harmer , Christopher P. Junk , Zoe Schnepp
- Applicant: Mark Andrew Harmer , Christopher P. Junk , Zoe Schnepp
- Applicant Address: US DE Wilmington
- Assignee: E.I. du Pont de Nemours and Company
- Current Assignee: E.I. du Pont de Nemours and Company
- Current Assignee Address: US DE Wilmington
- Main IPC: C07C309/06
- IPC: C07C309/06
Abstract:
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.
Public/Granted literature
- US20060276671A1 Manufacture of hydrofluoroalkanesulfonic acids Public/Granted day:2006-12-07
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