Patent ID: 7479573

Claim:
A cationic compound having the formula: wherein L is {(CH 2 ) i —Y—(CH 2 ) j } k , wherein Y is selected from the group consisting of CH 2 , an ether, a polyether, an amide, a polyamide, an ester, a sulfide, a urea, a thiourea, a guanidyl, a carbamoyl, a carbonate, a phosphate, a sulfate, a sulfoxide, an imine, a carbonyl, and or a secondary amino group, and wherein a carbon of (CH 2 ) i or a carbon (CH 2 ) j is optionally substituted with —OH; R 1 and R 4 are, independently, a straight-chain, branched or cyclic alkyl or alkenyl groups having from 8 to 40 carbon atoms; R 3 and R 6 are, independently, H an alkyl or an alkenyl group; R 2 is an aminoalcohol group; R 5 is H or an aminoalcohol group; X is a physiologically acceptable anion; and a is the number of positive charges divided by the valence of the anion; i and j are independently an integer from 0 to 100; k is an integer from 1 to 25, and wherein at least one of R 1 or R 4 is a straight-chain, branched or cyclic alkyl or alkenyl group having from 8 to 40 carbon atoms.