Foamed ionic compounds
AssigneeE. I. Du Pont de Nemours and Company
InventorsMark Brandon Shiflett, Akimichi Yokozeki
Life of this patent
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Abstract
Foams of ionic compounds are described. Methods of making the foams are also provided. The foams are ionic and can be used for catalysis, separations, gas storage, biosensors, electronics, and electrochemical applications.
Claims19
An ionic, non-polymeric foam that comprises an ionic compound wherein the ionic compound comprises an anion selected from the group consisting of
- (a) aminoacetate, ascorbate, benzoate, catecholate, citrate, formate, fumarate, gallate, glycolate, glyoxylate, iminodiacetate, isobutyrate, kojate, lactate, levulinate, oxalate, pivalate, propionate, pyruvate, salicylate, succinamate, succinate, tiglate, and tropolonate;
- (b) [CH3CO2]−, [HSO4]−, [CH3OSO3]−, [C2H5OSO3]−, [AlCl4]−, [CO3]2−, [HCO3]−, [NO2]−, [NO3]−, [SO4]2−, [HSO3]−, [CuCl2]−, Cl−, Br−, I−, SCN−;
- carborates optionally substituted with alkyl or substituted alkyl groups;
- and carboranes optionally substituted with alkylamine, substituted alkylamine, alkyl or substituted alkyl groups;
- (c) [BF4]−, [PF6]−, [SbF6]−, [CF3SO3]−, [HCF2CF2SO3]−, [CF3HFCCF2SO3]−, [HCClFCF2SO3]−, [(CF3SO2)2N]−, [(CF3CF2SO2)2N]−, [(CF3SO2)3C]−, [CF3CO2]−, [CF3OCFHCF2SO3]−, [CF3CF2OCFHCF2SO3]−, [CF3CFHOCF2CF2SO3]−, [CF2HCF2OCF2CF2SO3], [CF2ICF2OCF2CF2SO3], [CF3CF2OCF2CF2SO3]−, [(CF2HCF2SO2)2N]−, [(CF3CFHCF2SO2)2N]−, and F−;
- and
- (d) anions represented by the structure of the following formula:
- wherein R11 is selected from the group consisting of:
- (i) —CH3, —C2H5, or a C3 to C10 straight-chain, branched or cyclic alkane or alkene group, optionally substituted with at least one member selected from the group consisting of Cl, Br, F, I, OH, NH2 and SH;
- (ii) —CH3, —C2H5, or a C3 to C10 straight-chain, branched or cyclic alkane or alkene group comprising one to three heteroatoms selected from the group consisting of O, N, Si and S, and optionally substituted with at least one member selected from the group consisting of Cl, Br, F, I, OH, NH2 and SH;
- (iii) a C6 to C10 unsubstituted aryl, or C6 to C10 unsubstituted heteroaryl, group having one to three heteroatoms independently selected from the group consisting of O, N, Si and S;
- and
- (iv) a C6 to C10 substituted aryl, or C6 to C10 substituted heteroaryl, group having one to three heteroatoms independently selected from the group consisting of O, N, Si and S;
- and wherein said substituted aryl or substituted heteroaryl group has one to three substituents independently selected from the group consisting of:
- (A) —CH3, —C2H5, or a C3 to C10 straight-chain, branched or cyclic alkane or alkene group, optionally substituted with at least one member selected from the group consisting of Cl, Br, F, I, OH, NH2 and SH,
- (B) OH,
- (C) NH2, and
- (D) SH.
A metastable liquid that comprises a fluorocarbon blowing agent and an ionic compound, wherein the ionic compound comprises an anion selected, from the group consisting of [BF4]−, [PF6]−, [SbF6]−, [CF3SO3]−, [HCF2CF2SO3]−, [CF3HFCCF2SO3]−, [HCClFCF2SO3]−, [(CF3SO2)2N]−, [(CF3CF2SO2)2N]−, [(CF3SO2)3C]−, [CF3CO2]−, [CF3OCFHCF2SO3]−, [CF3CF2OCFHCF2SO3]−, [CF3CFHOCF2CF2SO3]−, [CF2HCF2OCF2CF2SO3]−, [CF2ICF2OCF2CF2SO3], [CF3CF2OCF2CF2SO3]−, [(CF2HCF2SO2)2N]−, [(CF3CFHCF2SO2)2N]−, and F−.
Dependencies are inferred from the claim text.