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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.

锂金属淬火超额实现与异戊二烯。Quenching the excess lithium metal was achieved with isoprene.

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结合我国的实际情况，提出了发展我国异戊橡胶的几点看法。Development proposals of isoprene rubber in China were put forward.

异戊二烯在镍基催化剂作用下可深度加氢为异戊烷。Isoprene could be deeply hydrogenated to isopentane on nickel catalyst.

氯化发生在异戊二烯单元附近形成烯丙基氯。Chlorination occurs adjacent to the isoprene units to form allylic chlorines.

乳胶，一种从橡树获得的物质，是天然的异戊二烯聚合物。Latex, a material obtained from rubber trees, is a natural polymer of isoprene.

实验确定出了异戊二烯催化三聚的适宜操作条件和反应介质。The optimum operating condition and reaction medium of isoprene trimerization were established.

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异戊二烯在镍基催化剂作用下的加氢反应机理为连串反应机理。Hydrogenation mechanism of isoprene on Ni catalyst followed the mechanism of consecutive reaction.

用负载钛催化剂在加氢汽油溶剂中引发丁二烯配位聚合。The polymerization of isoprene with supported titanium catalyst modified by n-octanol was carried out.

图1。有代表性的单萜烯类。显示了异戊二烯单元的一般结构特点。Figure 1. Representative monoterpenes. Isoprene units are shown to indicate the common structural features.

目的比较精神分裂症与对照组呼出气体中异戊二烯浓度的差异。Objective To investigate the distinction between schizophrenia and controls about exhaled levels of isoprene.

异戊二烯是一种单基物质，它的分子们通过共价键连接生成其他聚合物。Isoprene is a monomer, which is a substance whose molecules can be linked together chemically to form a polymer.

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并通过对裂解产物的分析研究了天然橡胶、异戊二烯橡胶和顺丁二烯橡胶的裂解机理。The pyrolysis mechanism of nature rubber, isoprene rubber and butadiene rubber was analysis by pyrolysis production.

异戊二烯单元以1，4-方式连接并以顺式异构形式存在的一种聚异戊二烯。A polyisoprene in which the isoprene units are joined in the 1,4 –manner and in which they occur in the cis isomeric form.

推导了异戊二烯在环已烷-二氧六环混合溶剂中的负离子聚合机理，并通过实验进行了验证。The mechanism of anionic polymerization of isoprene with cyclohexane and dioxane as solvent was studied and improved by experiment.

树木分泌的天然化学物质异戊二烯和萜烯被认为可保护树叶免受过多热量和阳光的伤害。Trees produce natural chemicals, called isoprene and terpene, that are thought to protect their leaves from too much heat and sunlight.

研究表明，丁二烯聚合机理原则上同样适用于异戊二烯的负离子聚合。The experimental results showed that the mechanism of anionic polymerization of butadiene was also fit for the anionic polymerization of isoprene.

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这是因为它们有着十分相似的微观结构，因此异戊橡胶在性能上与天然橡胶有着一样的优异综合性能。This is because they have a quiet similar microstructure, so isoprene rubber has the same excellent combination properties with natural rubber in performance.

除了含有由两个异戊二烯单元组成的单萜烯类以外，精油还含有较少挥发性的，由三个或四个异戊二烯单元组成的化合物。In addition to monoterpenes, compounds derived from two isoprene units, essential oils contain less volatile compounds derived from three and four isoprene units.

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.