Hierarchy classification:

1. top of the aat hierarchies
2. Brand Names Facet
3. Brand Names (hierarchy name)
4. brand name additives

Anotations

Scope note:

Trademarked name for a thermoplastic acrylic resin composed of an ethyl acrylate and a methyl methacrylate copolymer. It supplies a hard, clear protective coating for metals but is subject to biodeterioration, and yellowing over time; formerly called Acryloid B-44 in the United States.