POLYMER AND POSITIVE RESIST COMPOSITION
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United States of America Patent
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Feb 15, 2016
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Feb 20, 2015
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Provided are a polymer that can be favorably used as a positive resist having high sensitivity and a positive resist composition that can favorably form a resist film having excellent sensitivity. The polymer includes an α-methylstyrene unit and a methyl α-chloroacrylate unit, and the proportion of components having a molecular weight of greater than 80,000 in the polymer is no greater than 6.0%. The positive resist composition contains the aforementioned polymer and a solvent.
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