乙丙三元胶;EPDM; 乙烯-丙烯-二烯三元共聚物; 乙烯-丙烯-亚乙基降冰片烯三元共聚物; 丙烯、乙烯、亚乙基降冰片烯三元的共聚物; 聚(乙烯-CO-丙烯-CO-5-亚甲基-2-冰片烯); 5-亚乙基双环[2.2.1]庚-2-烯与乙烯和1-丙烯的聚合物;5-ethylidene-bicyclo[2.2.1]hept-2-en polymer with ethene and 1-propene; ethylene/propylene/diene terpolymer; Bicyclo[2.2.1]hept-2-ene,5-ethylidene-,polymer with ethene and 1-propene