Patent ID: 7786064

Claim:
An ionic liquid in the form of a liquid consisting of an amine oxide cation having the formula: wherein R 3 is an C 8-22 alkyl, C 8-22 hydroxyalkyl, C 8-22 alkyl phenyl group, and mixtures thereof; R 4 is an C 2-3 alkylene or C 2-3 hydroxyalkylene group or mixtures thereof; x is from 0 to about 3; and each R 5 is an C 1-3 alkyl or C 1-3 hydroxyalkyl group or a polyethylene oxide group containing an average of from about 1 to about 3 ethylene oxide groups; or the R 5 groups are attached to each other, through an oxygen or nitrogen atom, to form a ring structure; and an anion selected from a group consisting of mid-chain branched alkyl sulfates, mid-chain branched alkyl aryl sulfonates and mid-chain branched alkyl polyoxyalkyene sulfates.