Linked from
The 22 pages that link to Thermoplastic, each with the reason it gives.
PolycarbonateNarrower topic: Polycarbonate can be melted and remolded rather than permanently cured.
CelluloidNarrower topic: Celluloid belongs to this class and can be molded by heating.
Gutta-perchaNarrower topic: Gutta-percha can be reshaped through repeated heating and cooling.
Polyvinyl acetateNarrower topic: This classification describes polyvinyl acetate’s response to heat.