Termination by disproportionation is another mechanism of termination in chain-growth polymerization. In this process, two growing polymer chains react, and one chain abstracts a hydrogen atom from the other chain. This results in the formation of two dead polymer chains, one with a saturated end group and the other with an unsaturated end group. Termination by disproportionation is also common in free radical polymerization.

歧化终止是链增长聚合中的另一种终止机制。在这个过程中，两条不断增长的聚合物链发生反应，一条链从另一条链中提取一个氢原子。这导致形成两条死的聚合物链，一条具有饱和端基，另一条具有不饱和端基。歧化终止在自由基聚合中也很常见。