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. [plastic by property: thermoplastic or thermoset]
10. polyester (resin)
11. thermoplastic polyester

Anotations

Scope note:

Thermoplastic polyester manufactured from corn starch or other renewable resources. First developed for use as a synthetic fiber during World War 2 when organic materials were in short supply. In conservation used as a protective covering for stone materials exposed outdoors.