反应详情

温度

160 °C

Ninety-eight grams (1 mol) of maleic anhydride were weighed into a 500 ml. round-bottom flask fitted with a separatory funnel, thermometer and reflux condenser. One hundred and two grams (1 mol) of 1, 5 - pentanediol were introduced into the separatory funnel. The maleic anhydride was heated to 140° C by means of a heating mantle and the pentanediol was added dropwise over a period of 60 minutes. The reactants were stirred with a magnetic stirrer. The temperature was raised gradually to 160° C. After the addition of the pentanediol was complete, the mixtures was heated an additional 30 minutes, then allowed to cool. The monoester was a moderately viscous liquid of 1400 - 1500 centipoise and an acid value of 216.

1. customround-bottom flask fitted with a separatory funnel
2. temperaturethermometer and reflux condenser
3. temperaturethe mixtures was heated an additional 30 minutes
4. temperatureto cool