NOMEX® and KEVLAR® are aromatic polyamides or aramids developed by DuPont. The term aramid derives from the word aromatic and amide (aromatic + amide), which is a polymer with many amide bonds repeating in the polymer chain. Therefore, it is categorized within the polyamide group.
It has at least 85% of its amide bonds attached with aromatic rings. There are two main types of aramids, categorized as meta-aramid, and para-aramid and each of these two groups have different properties relating to their structures.