Thermosetting polymers are compounds that solidify, or "set," after cooling from the molten state and then cannot be remelted. Some typical thermosetting polymers are the epoxys, alkyds, polyurethanes, furans, silicones, polyesters, and phenolic plastics. Products made from thermosetting polymers include: radio cases, buttons, dinnerware, glass substitutes, paints, synthetic rubber, insulation, and synthetic body parts. Because they cannot be recycled and do not readily decompose, thermosetting polymers pose a serious environmental hazard. They contribute significantly, therefore, to the problem of solid waste disposal and, in some cases, pose a threat to wildlife who swallow or become ensnared in plastic materials.

See Also

Solid Waste Incineration; Solid Waste Recycling and Recovery; Solid Waste Volume Reduction