#PolymethylMethacrylateMarket Polymethyl methacrylate is a synthetic resin produced by the polymerization reaction of methyl methacrylate. It is transparent, rigid, and clear plastic usually used as a shatterproof replacement of glass (windows, skylights, laminated signs & aircraft canopies, etc.). This plastic material has proved to be an economical alternative for polycarbonate when tensile strength, transparency, polishing & UV resistance is more important than impact strength and resistance to chemicals & heat.