Patent ID: 7915450

Claim:
A compound or polycation having the formula: wherein m, n, q, r, s, u, and y are 1; v and w are 0; Q is N; L is (CH 2 ) 1 , where 1 is an integer from 1 to 4; R 1 and R 4 are H; R 2 , R 3 , R 5 and R 6 , independently of one another, are H, or an alkyl or alkyl ether optionally substituted by one or more of an alcohol, an amino alcohol, an amine, an amide, an ether, a polyether, a polyamide, an ester, a mercaptan, an alkyltio, a urea, a thiourea, a guanidyl, and a carbamoyl group; at least one of R 3 and R 6 is a straight-chain alkyl group; and R 3 and R 6 are covalently linked with each other to form a cyclic moiety; X is a physiologically acceptable anion; and a is the number of positive charges divided by the valence of the anion.