Process for the preparation of (per)fluorinated mono-functional carbonyl compounds
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 20, 2008
Grant Date -
Jul 29, 2004
app pub date -
Jan 9, 2004
filing date -
Jan 9, 2003
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A process for the synthesis of (per)fluorinated mono-functional carbonyl compounds having the following formula (I): F-A-R.sub.F--B--C(O)X.sub.1 (I) wherein: X.sub.1=F, CF.sub.3; A, B equal to or different from each other, are independently (per)fluoroalkylene or (per)fluorooxyalkylene groups; R.sub.F is --ORf.sub.1O-- wherein Rf.sub.1=perfluoroalkylene or --ORf.sub.2, wherein Rf.sub.2 is a perfluorooxyalkylene chain; said process comprising the following steps: A) obtainment of the formula (II) mono-hypofluorite: FO--CFX.sub.2-A-R.sub.F--B--C(O)X.sub.1 (II) by partial fluorination with elemental fluorine of the carbonyl groups of the formula (III) compound: X.sub.2(O)C-A-R.sub.F--B--C(O)X.sub.1 (III) in the presence of a formula MeFy catalyst, Me being an alkaline or alkaline-earth metal or Ag, y=1 or 2; B) thermal decomposition of the compound (II) to give the compounds according to the following scheme: FO--CFX.sub.2-A-R.sub.F--B--C(O)X.sub.1 (II) - - -.fwdarw.F-A-R.sub.F--B--C(O)X.sub.1 (I)+(O)CFX.sub.2.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully