Patent ID: 7074867

Claim:
A compound having the formula (1): âˆ’ O 3 Sâ€”R 1 â€”V 1 â€”R 2 â€”V 2 wherein R 1 is a hydrocarbon radical comprising 1 to 10 main chain carbon atoms, wherein hydrogen atoms bonded to the main chain carbon atoms are independently substituted or not substituted; R 2 is a hydrocarbon radical comprising 6 to 20 main chain carbon atoms, wherein hydrogen atoms bonded to the main chain carbon atoms are independently substituted or not substituted; V 1 is a saturated or unsaturated, monocyclic or bicyclic ring system comprising 5 to 9 ring atoms, wherein at least 2 ring atoms are nitrogen atoms, said nitrogen atoms being comprised in the same cycle; V 2 has the formula (II) wherein R 3 , R 4 , and R 5 are independently selected from the group consisting of H and a C 1 â€“C 4 alkyl group, wherein each C 1â€“C 4 alkyl group is independently substituted or not substituted.