Assertion: acrylic | /r/HasProperty | pmma
Facets:
Source sentences:
text: Acrylic, a polymer called poly(methyl methacrylate) (PMMA), is also known by trade names such as Lucite, Perspex and Plexiglas.
text: Chemically, acrylic is a synthetic polymer called polymethyl methacrylate, or PMMA.