[R2(OR3)y][R4(OR3)y]2R5N+X??? wherein R2 is an alkyl or alkyl benzyl group having from 8 to 18 carbon atoms in the alkyl chain, each R3 is selected from the group consisting of ???CH2CH2???, ???C2CH(CH3)???, ???CH2CH(CH2OH)???, ???CH2CH2CH2???, and mixtures thereof; each R4 is selected from the group consisting of C1-C4 alkyl, C1-C4 hydroxyalkyl, benzyl ring structures formed by joining the two R4