Lexan (LEXAN) is a registered trademark for SABIC Innovative Plastics' (formerly General Electric Plastics) brand of highly durable polycarbonate resin thermoplastic intended to replace traditional glass and Plexiglas where the need for strength and impact resistance justifies its higher cost. It is a polycarbonate polymer produced by reacting Bisphenol A with carbonyl chloride, also known as phosgene. Lexan is the brand name for polycarbonate sheet in thicknesses from 0.75 mm (0.03 in) to 12 mm (0.48 in) and resin in a wide range of grades. Applications are mainly in three domains — building (glazing and domes), industry (machine protection and fabricated parts) and communication and signage.
Both companies applied for U.S. patents in 1955. Before it was clear which would win the patent, both agreed that the patent holder would grant a license for an appropriate royalty. This agreement allowed both companies to concentrate on developing the polymer and was particularly advantageous to GE, since GE would not otherwise have been able to sell a product during the life of the original patent.
Lexan may leach bisphenol A, a chemical that some studies linked to cancer. These studies indicate exposure to low levels of BPA causes a range of serious health effects in laboratory animals. An expert panel of 12 scientists has found that there is "some concern that exposure to the chemical bisphenol A in utero causes neural and behavioral effects," according to the draft report prepared by The National Toxicology Program (NTP) Center for the Evaluation of Risks to Human Reproduction. For the general adult population, the expert panel found a "negligible concern for adverse reproductive effects following exposures.
Lexan is also used in:
Lexan[R] Film provides environmental solution to E/ E manufacturers.(SABIC Innovative Plastics' Non-Brominated, Non-Chlorinated Flame Retardant PC Film Helps E/ E OEMs Power up for High-End Eco Protection)
Apr 22, 2010; Available in 100-762 micron gauges, lexan EFR Film delivers non-brominated, non-chlorinated flame retardance, enabling E/E...