Process for production of styrene-based polymer moldings
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United States of America Patent
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Mar 5, 1996
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N/A
app pub date -
Sep 2, 1993
filing date -
Jan 13, 1988
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Abstract
A process of producing a styrene polymer molding which comprises heat treating a molding of a crystalline styrene polymer having mainly a syndiotactic configuration and having a crystallinity of at least 10% as determined by X-ray diffraction analysis. The heat treating is carried out at a temperature of 150.degree.to 250.degree. C. for 20 seconds to 90 minutes.
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