METHACRYLIC RESIN COMPOSITION AND OPTICAL COMPONENT
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United States of America Patent
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Issued Date -
Mar 1, 2018
app pub date -
Jun 9, 2017
filing date -
Aug 30, 2016
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Abstract
Provided is a methacrylic resin composition having excellent surface processability and displaying excellent preservability of formed surface processing. The methacrylic resin composition and an optical component contain a methacrylic resin including a structural unit (X) having a cyclic structure-containing main chain that is at least one selected from the group consisting of an N-substituted maleimide monomer-derived structural unit, a glutarimide-based structural unit, and a lactone ring structural unit. The methacrylic resin composition has a Vicat softening temperature of 120° C. to 160° C. Among methacrylic acid ester monomer-derived structural units, a ratio (S/H) of the integrated intensity (S) of a syndiotactic fraction (rr) relative to the integrated intensity (H) of a heterotactic fraction (mr), as determined by 1H-NMR measurement, is 1.20 to 1.50. The amount of methanol-soluble content is 5 mass % or less relative to 100 mass %, in total, of methanol-soluble content and methanol-insoluble content.
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