烯

• This allyl type of resin is a highly transparent, colourless material .
  这种烯丙基型的树脂是一种高度透明的、无色材料。
• Ketenes, notably dimethyl ketene, readily undergo oligomerization and polymerization .
  烯酮，特别是二甲基烯酮，很容易齐聚和聚合。
• Synthetic rubber (sbr) is a copolymer of butadiene (75%) and styrene (25%) .
  合成橡胶（SBR）是丁二烯（75）和苯乙烯（25）的共聚物。
• Charge-separated resonance structures do not contribute very much to the resonance hybrid of butadiene .
  电荷分离的共振结构对丁二烯没有很大的贡献。
• Of these end groups those having an allylic chlorine might be expected to show the highest activity .
  在这些端基中，带有烯丙基氯原子的端基活性最高。
• Polybutadiene is changed to an aziridinyl compound (polybutadieneimine) by a series of reactions .
  聚丁二烯经一系列反应转变成丙啶基化合物（聚丁二烯亚胺）。
• We might predict that both the lower and higher vinylogs of benzene should be similar in this respect .
  我们就能预计苯的较低和较高的插烯物在这方面也应是类似的。
• Phenyl(or polyphenyl)substituted epoxides serve as excellent precursors to phenyl(or diphenyl)carbenes .
  某些苯代（或多苯）环氧化物是制取带苯环（或二苯）碳烯的极好原料。
• The polyester in these compositions is a 50% solution of a maleic acid-prophlene glycol condensate in diallyl phthalate .
  在这些配方中的聚酯是马来酸--丙二醇缩合物在酞酸二烯丙酯中的50溶液。
• Depending upon reaction conditions, the product may be a polyketone formed b y addition polymerization of the ketene double bond .
  随着反应条件的不同，产物可以是由烯酮的双键加成聚合得到的聚酮。