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acrylic resin
Acrylic resins are a group of related thermoplastic or thermosetting plastic substances derived from acrylic acid, methacrylic acid or other related compounds.〔(acrylic resin definition, TheFreeDictionary quoting The American Heritage Dictionary of the English Language )〕 Polymethyl acrylate is an acrylic resin used in an emulsified form for lacquer, textile finishes, adhesives and, when mixed with clay, to gloss paper. Another acrylic resin is polymethyl methacrylate, which is used to make hard plastics with various light transmitting properties.
==Formulae==
Acrylic resin is a general term for any one of the plastics (resin) generated through chemical reaction by applying polymerization initiator and heat to a monomer.
The chemical name for the resin produced from the methyl methacrylate monomer (MMA) is polymethyl methacrylate (PMMA). MMA is a transparent and colorless fluid substance.〔( Methyl Methacrylate ) epa.gov, 2000, 'a colorless, volatile, flammable liquid that is soluble in warm water'〕 A characteristic feature of PMMA is its high transparency. It is also highly resistant to weather damage; it does not easily turn yellow or crumble when exposed to sunlight and has been known to last over thirty years. Polymethyl methacrylate is used for various translucent and transparent items such as aquariums, signboards, automobile taillights, bathtub liners, sinks, cell phone display screens, and backlight optical waveguides for liquid crystal displays (LCD).
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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