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%).

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生产方法是乳液聚合，和苯乙烯-丁二烯橡胶的生产过程相似，得到“热”橡胶和“冷”橡胶。

Produced by emulsion polymerization in a similar way to styrene-butadiene rubber processes, yielding both "hot" and "cold" rubbers.

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三中单体的聚合产生了具有两相的三元共聚物，一个是苯乙烯-丙烯腈的连续相， 另一个是聚丁二烯橡胶分散相。

The polymerization of the three monomers produces a terpolymer which has two phases: a continuous phase of styrene-acrylonitrile (SAN) and a dispersed phase of polybutadiene rubber.

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