(1)二烯烃的加成反应1,2加成:CH2=CH-CH=CH2 + Br2 ==>CH2Br-CHBr-CH=CH21,4加成:CH2=CH-CH=CH2 + Br2 ==>CH2Br-CH=CHCH2Br1,2,3,4加成:CH2=CH-CH=CH2 + 2Br2 ==>CH2Br-CHBr-CHBr-CH2Br(2)加聚反应nCH2=CH-CH2=CH2 ==> -[-CH2-CH=CH-CH2-]-n
