Catalytic synthesis of butanone glycol ketal with strong-acid cation-exchange resin

The butanone glycol ketal was synthesized by the reaction of butanone with glycol in the present of the strong-acid cation-exchange resin.The cation exchange resin catalytic activity to the ketal reaction was dis- cussed.The influential factors of the product yield such as molar ratio of ketone and alcohol,catalyst quantity and reaction time were systematically studied.The experiments showed that the strong-acid cation-exchange resin is a good catalyst to synthesis of butanone glycol ketal.The yield of butanone glycol ketal can reaches76.5% under the following optimum conditions:n(butanune):(glycol)=1:2,the catalyst quantity is equal to0.5% by mass of the total reaction materials,the cyclohexane is used as water entraining agent,the reaction time is 3h.