摘要:
Novel cyano- and hydroxyl-substituted 1,3-dioxane and dioxolane derivatives are prepared by reacting certain cyano-substituted compounds with a polyhydroxyl compound. These compounds have utility as components in hydraulic fluids.
摘要:
Hydraulic fluids having high wet equilibrium reflux boiling points and a good chemical stability, comprising cyano-substituted derivatives of cyclic ketals or acetals of the formula wherein
R is hydrogen or a monovalent radical selected from branched or linear alkyl and cyano-, hydroxy-, alkoxy-, acyloxy-, siloxy- or organosiloxy-substituted derivatives thereof, A is a divalent radical selected from alkylene and alkyl-, aryl-, cyano-, hydroxy-, cyanoalkyl-, hydroxyalkyl-, alkoxy-, polyalkoxy-, acyloxy-, siloxy- or organosiloxy-substituted alkylene and B is a divalent radical selected from branched or linear alkylene and
wherein each R', is hydrogen, methyl or ethyl and m and n are inlegers equal to or greater than 1.