kylamides (e.g. diethyllaurylamide), aliphatic acid esters (e.g. dibutoxyethyl succinate and dioctyl azealate), or organic solvents boiling at about 30??? to 150??? C., for example, lower alkyl acetates such as ethyl acetate and butyl acetate, ethyl propionate, secondary butyl alcohol, methyl isobutyl ketone, ??-ethoxyethyl acetate, and methyl cellosolve acetate.