isoprene

1.There is no isoprene rubber production industry in China at present which shows properous business opportunity in isoprene rubber production.

内尚没有异橡胶生产企业，异橡胶产品商机无限。

2.Abstract： The C5 Fraction derived from ethylene steamcracker contains some very useful components, isoprene, cyclopentadiene and piperylene.

摘 ： 来自裂解乙的C5馏份含有非常有用的化工原料——异二、二、间二。