" percent of a cyclic aminofunctional siloxane having the formula ##STR2## and (C) 0.1 to 10 weight percent of a compound having the formula: ##STR3## wherein Me denotes methyl, R is independently a monovalent hydrocarbon radical having from 1 to 6 carbon atoms or an aryl radical, R1 is a group having its formula selected from the group consisting of ##STR4## and wherein R3 is a divalent hydrocarbo" . . . . .