Process for the recovery of perfluorinated sulphonic acids from spent acid
Patent
US-6340414-B1
Inventor
HOMMELTOFT SVEN IVAR (DK)
Assignee
HALDOR TOPSOE AS (DK)
Country
United States
Dates
- Priority:1998/07/31
- Grant:2002/01/22
Description
This web page summarizes information in PubChem about patent US-6340414-B1. This includes chemicals mentioned, as reported by PubChem contributors, as well as other content, such as title, abstract, and International Patent Classification (IPC) codes. To read more about how this page was constructed, please visit the PubChem patents help page.
Process for the recovery of fluorinated sulphonic acid including the step of subjecting the spent acid to heat treatment with stepwise or continuously increasing temperature, withdrawing at least two fractions during the heat treatment; and recovering the fluorinated sulphonic acid from each fraction.
1998/07/31
1999/07/07
2002/01/22
2002/01/22
HOMMELTOFT SVEN IVAR (DK)
HALDOR TOPSOE AS (DK)
United States
- EP-0976451-A1
- JP-2000053629-A
- US-6340414-B1
C07B63/00 (inventive)
B01J31/40 (inventive)
C07C303/44 (inventive, first)
C07C309/06 (inventive)
Y10S159/19
Y10S159/16
B01J31/0227 (inventive)
B01J31/4092 (inventive, first)
B01J2231/4205
- US-4246199-A (SEA)
- US-5220095-A (APP)
- US-5245100-A (APP)
- EP-0614699-A1 (SEA)
- US-5472921-A (APP)
- US-5498820-A (APP)
- US-5603817-A (APP)
- US-5603812-A (SEA)
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- US-2004082826-A1 (PRS)
- US-7087803-B2 (APP)
- US-2006175413-A1 (PRS)
- DE-102008029759-B3 (SEA)
- US-2009324860-A1 (PRS)
- US-2011017954-A1 (PRS)
- US-8431196-B2 (APP)
- US-9072983-B2 (APP)
- CZ-307551-B6 (SEA)
- KR-100388119-B1
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- US-6340414-B1
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- US-4147721-A
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- HU-207846-B
- US-3184398-A
- US-3494975-A
- EP-1044963-A2
- US-2324240-A
- US-4394220-A
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