(a) amides having the formula ##STR1## wherein R7 is an alkyl group containing from about 8 to about 18 carbon atoms, preferably about 12 to about 14 carbon atoms and each R8 is the same or different and is selected from the group consisting of hydrogen, C1-3 alkyl, C1-3 alkanol, and --(C2 H4 O--)1-4 H groups and mixtures thereof;