还有个石油副产品是异戊二烯(译者注：橡胶基质)，用来生成汽车轮胎需要的合成橡胶。
One of these petroleum by-products is isoprene. This is used to make the synthetic rubber in car tyres.
而异戊二烯必须极其纯净才能生产出合成橡胶。
Isoprene needs to be extremely pure to make synthetic rubber.
异戊二烯也可以通过人工聚合来制造合成橡胶。
Isoprene can also be artificially polymerised to make synthetic rubber.
合成橡胶是丁二烯（75％）和苯乙烯（25％）的共聚物。
Synthetic rubber is a copolymer of butadiene (75%) and styrene (25%).
异戊二烯是C_5馏分中最具有利用价值的组分之一，在合成橡胶以及精细化工产品的开发利用方面具有广泛的前景。
Isoprene is one of the most valuable components in the C_5 fractions, which has wide prospect in development and utilization of synthetic rubber and fine chemicals.
通过丁烯和异戊二烯的共聚作用化合而成的一种合成橡胶，几乎不透空气，用作轮胎、内管道和绝缘等的材料中。
A synthetic rubber produced by copolymerization of a butylene with isoprene, nearly impermeable to air and used in tires, inner tubes, and insulation.
丁二烯用于生产各种类型的聚合物树脂，合成橡胶，和化学半成品。
Butadiene is used in the production of various types of polymer resins, synthetic rubbers, and chemical intermediates.
中国石油兰州石化公司合成橡胶厂将碳四、苯乙烯、丙烯腈-丁二烯-苯乙烯嵌段共聚物等装置的凝结水收集后，先用于丁腈硬胶聚合用盐水的加热，换热后的回水再用于凝聚和洗涤用水；
The condensed water from plants of C4 , styrene and ABS was recycled and applied to heat salt water in production of acrylonitrile-butadiene rubber, and then used for agglomerating and washing.
中国石油兰州石化公司合成橡胶厂将碳四、苯乙烯、丙烯腈-丁二烯-苯乙烯嵌段共聚物等装置的凝结水收集后，先用于丁腈硬胶聚合用盐水的加热，换热后的回水再用于凝聚和洗涤用水；
The condensed water from plants of C4 , styrene and ABS was recycled and applied to heat salt water in production of acrylonitrile-butadiene rubber, and then used for agglomerating and washing.
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