<?xml version="1.0" encoding="utf-8"?><mads xmlns="http://www.loc.gov/mads/" xmlns:mods="http://www.loc.gov/mods/v3" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.loc.gov/mads/
mads.xsd"><authority><topic authority="http://AATesaurus.cultura.gencat.cat/aat/getty_en">Plexiglas (TM)</topic></authority><related type="other"><topic>polymethyl methacrylate</topic></related><related type="other"><topic>acrylic sheet</topic></related><related type="broader"><topic>brand name materials</topic></related><variant type="other"><topic>Plexiglass</topic></variant><variant type="other"><topic>plexiglas</topic></variant> <note xml:lang="en"><![CDATA[ Proprietary name for polymerized methyl methacrylate, used as a substitute for glass in products such as windows, skylights, illuminated signs, and aircraft. Plexiglas was trademarked by Rohm and Haas AG in Germany ca. 1930s. ]]></note></mads>