TY - MANSCPT DB - Science History Institute DP - Science History Institute M2 - Courtesy of Science History Institute. Rights: No Known Copyright TI - Exterior views of Rohm and Haas home office building ID - ewatzhq AU - Rohm and Haas Company DA - 1964/// YR - 1964 AV - Rohm & Haas Company Archives, Box Photos Oversize 1, Folder 8 VL - Rohm & Haas Company Archives, Box Photos Oversize 1, Folder 8 AN - Rohm & Haas Company Archives, Box Photos Oversize 1, Folder 8 UR - https://digital.sciencehistory.org/works/ewatzhq AB - Two photographs depicting the exterior of the Rohm and Haas Company home office building located on Independence Mall West in Philadelphia, Pennsylvania. Constructed in the 1960's, the building was designed by architectural firm George M. Ewing Company in consultation with Modernist architect Pietro Belluschi (1899-1994) and features brown Plexiglas curtain wall panels. 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 - Corporations KW - Rohm and Haas Company KW - Chemical industry KW - Pennsylvania--Philadelphia KW - Architecture KW - Belluschi, Pietro, 1899-1994 KW - George M. Ewing Co. KW - Plexiglas LA - ER -