Patent ID: 8920656

Claim:
A method for extracting oil from an oil mixture comprising: (a) adding a compound to the oil mixture, wherein the compound has the formula (XI): wherein Ar 2 is a substituted or unsubstituted phenyl or benzyl; p is 1 or 2; m is 1 or 2; n is 0 or 1; each G 1 is independently selected from the group consisting of C(O)NR 2 and NR 2 C(O); each G 2 is absent; each R 2 is independently H or a C 1 -C 5 alkyl; each G 3 is independently absent, or (CH 2 ) q ; q is 1, 2, 3, 4 or 5; R is a carboxylic acid or carboxylate group; and R 1 is a saturated or unsaturated hydrophobic aliphatic group selected from the group consisting of C 8 -C 20 alkyl, C 8 -C 20 alkenyl or C 8 -C 20 alkadienyl; and (b) collecting the oil.