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US 2014/0155649 A1Published application
Process for the preparation of bis(perfluoroalkyl)phosphinic acid anhydrides
AssigneeMerck Patent GmbH
InventorsNikolai (Mykola) Ignatyev, Waldemar Wiebe, Helge Willner
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Abstract
The invention relates to a process for the preparation of bis(perfluoroalkyl)phosphinic acid anhydrides by reaction of a bis(perfluoroalkyl)phosphinic acid with phosphorus pentoxide, to novel bis(perfluoroalkyl)phosphinic acid anhydrides and to uses of bis(perfluoroalkyl)phosphinic acid anhydrides.
Claims6
Process for the preparation of bis(perfluoroalkyl)phosphinic acid anhydrides by reaction of a bis(perfluoroalkyl)phosphinic acid with phosphorus pentoxide.
Compounds of the formula I
- (CxF2x+1)2(O)POP(O)(CxF2x+1)2 I
- where
- x denotes 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 or 12.
A dehydrating agent or desiccant comprising a compound of the formula I
- (CxF2x+1)2(O)POP(O)(CxF2x+1)2 I
- where
- x denotes 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 or 12
- as dehydrating agent or as desiccant.
1 more element
Use of compounds of the formula I
- (CxF2x+1)2(O)POP(O)(CxF2x+1)2 I
- where
- x denotes 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 or 12, for the preparation of salts having bis(perfluoroalkyl)phosphinate anions or bis(perfluoroalkyl)phosphinic acid derivatives.
Dependencies are inferred from the claim text.