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US 2010/0145074 A1Published application
Functionalized n-substituted pyrrolidonium ionic liquids
AssigneeE.I. du Pont de Nemours and Company
InventorsTHOMAS FOO, Mark Andrew Harmer, Keith W. Hutchenson, Christopher P. Junk, Berlyn R. Mellein, Aaron Minter
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Abstract
This invention relates to compounds useful as ionic liquids that are based on an N-substituted pyrrolidinone and incorporate a pendant ammonium cation that is spaced from the pyrrolidone ring by a variable length linker.
Claims12
A compound represented by the structure of the following Formula 1:
- wherein
- (a) Z is —(CH2)n—, wherein n is an integer from 2 to 12;
- (b) R2 are R3 are each independently H or a C1 to C6 straight-chain or branched alkyl group;
- (c) R4 is —[(CH2)p—X]q—(CH2)r—Y—R6 wherein X and Y are each independently O, r and p are each independently an integer from 1 to 4, q is an integer from 0 to 8, and R6 is H or a C1 to C6 straight-chain or branched alkyl group;
- and
- (d) A− is an anion selected from the group consisting of levulinate, [BF4]−, [PF6]−, [SbF6]−, [CH3CO2]−, [HSO4]−, [CF3SO3]−, [HCF2CF2SO3]−, [CF3HFCCF2SO3]−, [CF3—O—CFHCF2SO3]−, [CF3CF2OCFHCF2SO3]−, [CF3CF2CF2OCFHCF2SO3]−, [HCClFCF2SO3]−, [(CF3SO2)2N]−, [AlCl4]−, [CF3CO2]−, [NO3]−, [SO4]2−, Cl−, Br−, I−, and F−.
3 more elements
Dependencies are inferred from the claim text.