Hierarchy classification:

1. top of the aat hierarchies
2. Materials Facet
3. Materials (hierarchy name)
4. materials (substances)
5. [materials by composition]
6. organic material
7. plastic (material)
8. [plastic by property]
9. thermoplastic
10. polyamide
11. nylon

Anotations

Scope note:

A durable, dyable nylon fiber formed from hexamethylenediamine and adipic acid. Nylon 6,6 was developed at DuPont in 1935. It is very similar in structure to nylon 6, a rival product created ny I.G. Farbenindustrie four years later, and the two types of polyamide fiber remain the most commonly used by the textile and plastics industries worldwide.