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. vinyl
11. vinyl resin
12. vinyl polymers

Narrower term/s

• polyvinyl formal

Anotations

Scope note:

Any of a group of thermoplastic resins made by condensing polyvinyl alcohol with an aldehyde and used chiefly in the form of sheets and films, molded products, coatings, adhesives; especially, the resin made from acetaldehyde.