<?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">polymethyl methacrylate</topic></authority><related type="other"><topic>Lucite (TM)</topic></related><related type="other"><topic>Perspex (TM)</topic></related><related type="other"><topic>Plexiglas (TM)</topic></related><related type="other"><topic>acrylic</topic></related><related type="broader"><topic>polymers</topic></related><related type="broader"><topic>polyacrylate</topic></related><variant type="other"><topic>PMMA</topic></variant><variant type="other"><topic>methacrylate, polymethyl</topic></variant><variant type="other"><topic>poly methyl-methacrylate</topic></variant><variant type="other"><topic>poly(methyl methacrylate)</topic></variant><variant type="other"><topic>polymerized methyl methacrylate</topic></variant><variant type="other"><topic>polymethylmethacrylate</topic></variant> <note xml:lang="en"><![CDATA[ Polymerized methyl methacrylate is a compound having a hard and glasslike appearance, with softening temperature from 105-125 C. Classified as bioinert. As a resin, widely used as a glass substitute (e.g., Plexiglass (TM)) and a bonelike material for prosthetics. First commercially sold in 1933 as a glass substitute. ]]></note></mads>