| abstract |
An ionic liquid, comprising a compound of Formula 1: n n n n n n n n n n n n wherein R a is a hydrocarbon chain having 2 to 10 carbon atoms and a terminal hydroxyl group and the hydrocarbon chain comprising —O— therein, —CO— therein or comprising both —O— and —CO— therein, R b is —C x H y SO 3 H, —C x H y PO 3 H, —C x H y COOH, —C x H y SO 3 − , —C x H y PO 3 − or —C x H y COO − , and x ranges from 1 to 6 and y ranges from 2 to 12. |