r chlorine substituted hydrocarbon isocyanate with the reactive hydrogen of a hydrocarbyly alcohol, hydrocarbyl mercaptan, hydrocarbyl phenol, hydrocarbyl tliiophenol, hydrocarbyl carboxylic acid or hydrocarbyl amine, R is a phenylene or an alkylene radical, or both, containing l to 12 carbon atoms, R is hydrogen or an alkyl radical containing 1 to 20 carbon atoms, R is a perfluoroalkyl radical c