polymacon
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| Name = Polymacon
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| IUPACName = 2-Hydroxyethyl 2-methylprop-2-enoate--ethane-1,2-diyl bis(2-methylprop-2-enoate)
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| CASNo = 25053-81-0
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| Section8 = {{Chembox Related
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Polymacon is a non-proprietary (i.e., generic) term for a hydrophilic polymer of 2-hydroxyethylmethacrylate (HEMA) cross-linked with ethylene glycol dimethacrylate (62%) and water (38%).{{citation|author1=Zia Chaudhuri|author2=Murugesan Vanathi|title=Postgraduate Ophthalmology|url=https://books.google.com/books?id=6yNlhpcNSQMC&pg=PA80|year=2012|publisher=JP Medical Ltd|isbn=978-93-5025-270-3|pages=79–80}} It is used in the manufacture of soft contact lenses, and is considered a low-hydration hydrogel of nonionic polymer.{{citation|author=Joseph C. Salamone|title=Polymeric Materials Encyclopedia|url=https://books.google.com/books?id=qpukFBjtCrAC&pg=PA1507|date=23 July 1996|publisher=CRC Press|isbn=978-0-8493-2470-3|page=1507}}