Nylon los yog Polyamide yog ib tsev neeg loj heev, Polyamide 6.6 thiab 6 yog siv rau hauv cov xov paj. Kev hais lus tshuaj, Polyamide 6 yog ib qho monomer nrog 6 carbon atoms. Polyamide 6.6 yog tsim los ntawm 2 monomers nrog 6 carbon atoms txhua, uas ua rau lub npe ntawm 6.6.