Lucite

Lucite is a trade name historically associated with polymethyl methacrylate (PMMA), a transparent thermoplastic polymer commonly referred to as acrylic or acrylic glass. It is widely used as a lightweight, shatter-resistant alternative to glass. The Lucite brand was developed by DuPont in the 1930s; PMMA is now manufactured by many producers under various trade names, including Plexiglas, Acrylite, and Altuglas.

PMMA is optically clear, with high light transmission (about 92%) and good UV resistance when stabilized. It is stronger and lighter than glass, but its impact resistance is lower than polycarbonate. It is an amorphous material with a glass transition temperature about 105°C; it softens on heating rather than melting at a single point, and it can be thermoformed in heated conditions. It accepts dyes and coatings and can be manufactured in sheets, rods, tubes, and molded parts.

Manufacturing methods include polymerizing methyl methacrylate monomer in bulk or in solution, with options for suspension or emulsion polymerization. Post-processing techniques include extrusion or casting to produce sheets and shapes; fabricating, bonding with solvents or specialized adhesives; and surface finishing such as polishing or coating.

Uses span architectural glazing, automotive and aerospace parts, signage, displays, lighting diffusers, medical devices (such as bone cement in some formulations), jewelry, and consumer products. The term Lucite is sometimes used generically for PMMA, though it remains a registered brand in some markets.