An unsaturated polyester resin was synthesized from dicyclopentadiene, maleic acid and ethylene glycol. This resin can be moulded by casting and also can be hardened in air.

• 用二环戊二烯,顺丁烯二酸和乙二醇合成不饱和聚酯,这种不饱和聚酯既可浇铸,也可以在空气中固化。