Poly(methyl methacrylate) (PMMA), also known as acrylic, acrylic glass, or plexiglass, as well as by the trade names Crylux, Plexiglas, Acrylite, Astariglas, Lucite, Perclax, and Perspex, among several others (see below), is a transparent thermoplastic often used in sheet form as a lightweight or shatter-resistant alternative to glass. The same material can be used as a casting resin or in inks and coatings, among many other uses.
Although not a type of familiar silica-based glass, the substance, like many thermoplastics, is often technically classified as a type of glass (in that it is a non-crystalline vitreous substance) hence its occasional historical designation as acrylic glass. Chemically, it is the synthetic polymer of methyl methacrylate.
Perspex and acrylic are essentially the same thing. Perspex acrylic is a premium branded acrylic and is manufactured to the highest industry standards. Perspex acrylic has an enviable reputation as the very best acrylic available.Perspex is used in a vast variety of different ways - it's chemical properties, a wide range of colours and finishes, availability and cost, make it the material of choice in applications and industries ranging from home repairs and general DIY through to construction, furniture design, retail displays, signage and lighting.