TY - MANSCPT DB - Science History Institute DP - Science History Institute M2 - Courtesy of Science History Institute. Rights: No Known Copyright TI - Research laboratory for resinous products ID - hnrmba6 AU - Rohm and Haas Company DA - 1930/// YR - 1930 AV - Rohm & Haas Company Archives, Box Photos 2, Folder 5 VL - Rohm & Haas Company Archives, Box Photos 2, Folder 5 AN - Rohm & Haas Company Archives, Box Photos 2, Folder 5 UR - https://digital.sciencehistory.org/works/hnrmba6 AB - General view of a research laboratory for resinous products at the Rohm and Haas Company home office located at West Washington Square in Philadelphia. The Rohm and Haas Company was founded in 1907 in Esslingen, Germany through the partnership of German chemist Otto Röhm and German businessman Otto Haas. In 1933, Röhm's experiments with the polymerization of methyl methacrylate led to the creation of a clear, solid plastic sheet, which he trademarked Plexiglas. During World War II, the demand for Plexiglas, which both Allied and Axis forces used for submarine periscopes and aircraft windshields, canopies, and gun turrets, helped transform Rohm and Haas into a major chemical firm. KW - Rohm and Haas Company KW - Corporations KW - Laboratories KW - Scientific apparatus and instruments KW - Glassware LA - ER -