R4 (OR3)y !2 R5 N+ x- wherein R2 is an alkyl or alkyl benzyl group having from about 8 to about 18 carbon atoms in the alkyl chain, each R3 is selected from the group consisting of --CH2 CH2 --, --CH2 CH(CH3)--, --CH2 CH(CH2 OH)--, --CH2 CH2 CH2 --, and mixtures thereof; each R4 is selected from the group consisting of C1 -C4 alkyl, C1 -C4 hydroxyalkyl, benzyl, ring structures formed by joining th