加聚反应：单体间相互反应生成一种高分子化合物,叫做加聚反应.
丙烯,2-丁烯加聚反应
用【】代替聚合物外面的框框,→均有高温高压催化剂,`只占位
nCH2＝CH－CH3→【CH2－CH】n
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nCH3－CH＝CH—CH3→【CH－CH】n
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```````````````````````````````````CH3`CH3
单体间相互反应生成高分子化合物,同时还生成小分子（水、氨等分子）的反应叫缩聚反应.
氨基酸的缩聚反应
(1)nNH2CH(R)COOH ==>-[-NHCH(R)CO-]-n + nH2O
(2)nNH2CH(R1)COOH + nNH2CH(R2)COOH ==>
-[-NHCH(R1)CO-NHCH(R2)CO-]-n + 2nH2O