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.: US12709531Application Date: 2010-02-22
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Publication No.: US07897807B2Publication Date: 2011-03-01
- 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: C07C309/04
- IPC: C07C309/04 ; C07C309/19
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
- US20100145093A1 Manufacture of Hydrofluoroalkanesulfonic Acids Public/Granted day:2010-06-10
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