In the presence of catalyst phosphoric acid,isomeric addition of bipentene with cis-butenedioic anhydride can form terpenyl bu tenedioic anhydride compound as expoxylite firming agent.

用磷化剂，化工业双戊烯与顺丁烯二酐进行构加成反应。

The distillation system design of isomeric dichlorotoluene and its production process are given in detail in this paper.

详细讨论了二氯甲苯构体精统的工程设计与生产过程。