. . " more than 2 carbon atoms and having a valence of n+1 Where n is a positive integer, and each Z is a monovalent radical attached to R by a carbon-nitrogen bond and is composed of carbon, nitrogen, and hydrogen atoms and contains at least two amine groups, the ratio of carbon atoms to nitrogen atoms in the substituent --RZ being less than 6:1, and (B) soluble hydrolyzates thereof, and (2) applying" . .