Nylon ko Polyamide babban dangi ne, Polyamide 6.6 da 6 an fi amfani dashi a cikin yarn masana'antu. Maganar sinadarai, Polyamide 6 monomer ɗaya ce tare da atom ɗin carbon guda 6. Polyamide 6.6 an yi shi ne daga monomers 2 tare da atom ɗin carbon 6 kowannensu, wanda ke haifar da ƙirar 6.6.