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| Acrylite | |
|---|---|
| Name | Acrylite |
| Type | Thermoplastic |
| Invented | 1930s |
| Inventor | Rohm and Haas |
| Density | 1.18 g/cm³ |
| Melting point | ~160 °C |
| Othernames | Methyl methacrylate sheet |
Acrylite. Acrylite is a trade name for cast and extruded methyl methacrylate thermoplastic sheets and related products widely used for glazing, signage, and optical components. The material is produced and marketed by chemical firms and industrial manufacturers associated with polymer chemistry, plastics processing, and display fabrication and competes with other brands in markets served by companies and institutions involved in construction, exhibition design, and scientific instrumentation.
Acrylite is a transparent thermoplastic polymer sheet derived from Methyl methacrylate monomer polymerization and is positioned alongside materials developed by companies such as Rohm and Haas, DuPont, BASF, Evonik, and Sabic. As a glazing and fabrication substrate it is used by firms in the supply chains of Apple Inc., Sony, General Electric, Siemens, and Panasonic Corporation for display housings and by museums and galleries like the Metropolitan Museum of Art and the Smithsonian Institution for protective cases. Designers and architects from studios collaborating with practices such as Foster + Partners, Gensler, and Zaha Hadid Architects select it as an alternative to glass in projects for clients including The British Museum, Tate Modern, and Guggenheim Museum Bilbao.
Commercial development of acrylic sheet materials traces to early 20th-century polymer research in laboratories associated with firms such as Rohm and Haas, I. G. Farbenindustrie, DuPont, and research institutions such as Massachusetts Institute of Technology, Imperial College London, and ETH Zurich. Wartime and postwar demand for optical plastics increased production by industrial conglomerates including Bayer, British Petroleum, Shell, and Dow Chemical Company. Patents and industrial trials in the 1930s–1950s by companies like Rohm and Haas and Rohm GmbH established casting and extrusion techniques later adopted by manufacturers such as Perspex International, Altuglas International, and Mitsubishi Chemical for architectural and marine uses. Adoption followed in sectors represented by trade associations such as the Society of Plastics Engineers and standards bodies like ASTM International and ISO.
Acrylite sheets are primarily poly(methyl methacrylate) produced by free-radical polymerization of Methyl methacrylate with additives supplied by specialty chemical firms like Clariant, Eastman Chemical Company, AkzoNobel, and LANXESS. Typical properties include high optical clarity rivaling specialty glass produced by companies such as Schott AG, good UV transmittance managed with stabilizers from Huntsman Corporation, and a specific gravity similar to plastics marketed by RTP Company and Covestro. Mechanical and thermal behavior is characterized in standards published by ASTM International committees and evaluated in laboratories at institutions such as National Institute of Standards and Technology and Fraunhofer Society.
Acrylite is manufactured in cast and extruded grades using equipment from industrial suppliers such as KraussMaffei, Bühler Group, and KraussMaffei Berstorff. Cast grades are produced in batch polymerization like processes developed by Rohm and Haas and used in optics by firms such as Carl Zeiss, while extruded grades are continuous processes favored for signage and fabrication by manufacturers connected to 3M and Avery Dennison. Specialty grades include UV-stabilized, flame-retardant certified to standards used by Underwriters Laboratories, light-diffusing variants used by lighting companies like Philips and Osram, and optical-grade sheets specified by aerospace contractors including Boeing and Airbus.
Applications span architectural glazing in projects by Norman Foster, retail fixtures for chains such as IKEA, museum display cases produced for institutions like Victoria and Albert Museum, point-of-purchase signage for companies including Coca-Cola, and instrumentation housings supplied to laboratories at Harvard University and Stanford University. In marine and transportation sectors it is used by shipbuilders and rail manufacturers associated with Carnival Corporation and Bombardier. Photonics and optics suppliers such as Thorlabs and Edmund Optics employ optical grades for lenses and light guides, while medical device manufacturers like Medtronic and Johnson & Johnson use biocompatible variants in some non-implant applications.
Safe handling procedures for acrylic sheets are promulgated by regulatory bodies such as the Occupational Safety and Health Administration and testing standards from ASTM International; electrical and fire performance is assessed according to criteria used by Underwriters Laboratories and National Fire Protection Association. Fabrication requires cutting, routing, and thermoforming using equipment from suppliers like Makita and Bosch, and adhesives from Henkel and 3M are recommended for bonding. Durability considerations reference weathering programs carried out at laboratories such as Q-Lab and field studies by organizations including National Renewable Energy Laboratory.
Environmental impacts are evaluated in life-cycle assessments by research centers such as Environmental Protection Agency (EPA), European Chemicals Agency, and non-profits like Greenpeace. Recycling streams involve mechanical grinding and reprocessing practiced by plastics recyclers including Veolia and Suez and chemical recycling initiatives pursued by firms such as PyroGenesis and research groups at Imperial College London and MIT. Regulations and circular-economy policies developed by European Commission and governments of United States and Japan influence recovery rates and end-of-life management for acrylic materials.
Category:Plastics