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›› 2006, Vol. 40 ›› Issue (4): 25-27.

• 研究报道 • Previous Articles     Next Articles

Studies on the Diels-Alder Reaction of Rosin with Acrylic Acid under Microwave Irradiation

YAO Xing-dong, NIE Yuan-mei, LEI Fu-hou   

  1. The Green Chemistry & Technology Key Laboratory, Guangxi University for Nationalities, Nanning 530006, China
  • Received:2006-03-16 Revised:1900-01-01 Online:2006-07-30 Published:2006-07-30

Abstract: The Diels-Alde addition reaction of rosin with acrylic acid under microwave irradiation has been investigated. The products have been verified with FT-IR,UV and HPLC. The results show microwave irradiation can effectively accelerate the reaction, which completed within 90 min for open system or 5 min for the sealed system in the addition reaction system of 35 g rosin with 7.2 mL acrylic acid. Acid values of the products under microwave irradiation are much higher than that with routine heating for 8 hours.Long reaction time and high temperature are favorable to increase of acid values of products in the normal heat method for preparation of acrylated rosin. The optimal microwave power is 640 W in microwave hest and pressure system. Excessive microwave power and long irradiation time are adverse to increase of acid values of products.

Key words: rosin, acrylic acid, Diels-Alder addition reaction, microwave irradiation

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