Polymethyl methacrylate (PMMA) is also known as acrylic glass or as the well-known and established trademark Plexiglas™. In fact it looks similar to glass, but is lightweight and shatter-resistant. When modified accordingly, acrylic glass shows great scratch and impact resistance. The pure material is rarely sold as an end product; more often is sold as a modified formulation with varying amounts of co-monomers, additives and fillers. Due to its composition, acrylic glass has some specific properties: It can transmit light better than normal glass; it is elastic, shock resistant and easily shaped at temperatures above approx. 105 °C; furthermore, it can be bonded or welded. Some types are permeable to UV light and X-rays but not to infrared light, which makes them ideal for specific applications such as in greenhouses and X-ray lithography.
Acrylic glass can be found in many products in the medical, automotive, building and optical industries, as indicator glasses, spectacle glasses, industrial floors, light covers for vehicles, optical fibers, lenses, furniture, etc.