Lucite International has its roots firmly planted in plastics. The top producer of acrylic monomers (ahead of Dow, Degussa, and Asahi Kasei) with quarter-share of the world market, Lucite International has a history that dates back to the discovery of methyl methacrylate (MMA) by an ICI chemist in 1934 and DuPont's opening of the first US plant three years later. MMA is the main building block of acrylic materials. The company's brand names include Lucite, Perspex, and Lucite Tufcoat. Charterhouse Capital, which had owned 78% of Lucite, first put it up for sale in 2006, meeting with no success. It was later acquired by a unit of Mitsubishi Chemical Holdings in 2008.