| abstract |
Disclosed are compounds having the following formula (I):Formula (I) wherein R is an alkylene chain having between 8 and 20 carbon atoms, and A is one or more anions having a total charge of −2, or R is a quaternary amine having the following formula (Ia):Formula (Ia) wherein R a and R b are each an alkylene chain having between 8 and 20 carbon atoms, and A is one or more anions having a total charge of −3; R 1 , R 2 , R 3 , R 4 , R 5 and R 6 are each independently selected from C 1-10 alkyl and H; E has the following Formula (Ib), wherein the ester oxygen is bonded to the aromatic ring of each E at the same position, the position being position 2 or 3; and wherein R E is H or a halide. |