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US 2006/0235230 A1Published application
Ionic liquids
AssigneeE. I. Du Pont de Nemours and Company
InventorsMark Harmer, Christopher Junk, Leo Manzer
Life of this patent
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Abstract
The present invention relates to compositions of matter that are useful as ionic liquids. The compositions of the invention are based on an N-substituted pyrrolidinone, said pyrrolidinone having a pendant ammonium cation that is separated from the pyrrolidone ring by a variable length alkyl spacer.
Claims4
A compound of the Formula:
- wherein:
- (i) Z is —(CH2)n—, wherein n is an integer from 2 to 12;
- (ii) R2, R3 and R4 taken independently am H, —CH3, —CH2CH3 or C3 to C6 straight-chain or branched monovalent alkyl;
- and
- (iii) A− is an anion selected from the group consisting of [BF4]−, [PF6]−, [SbF6]−, [CH3CO2]−, [HSO4]−, [CF3SO3]−, [HCF2CF2SO3]−, [CF3HFCCF2SO3]−, [HCClFCF2SO3]−, [(CF3SO2)2N]−, [AlCl4]−, [CF3CO2]−, [NO3]−, [SO4]2−, Cl−, Br−, I−, and F−.
2 more elements
Dependencies are inferred from the claim text.