Process for production of styrene-based polymer moldings
AssigneeIdemitsu Kosan Co., Ltd.
InventorAkikazu Nakano
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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.
Claims14
A process for 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 more than 10% as determined by X-ray diffraction analysis, said heat treating being carried out at a temperature of 150.degree. to 250.degree. C. for a period of time of 20 seconds to 90 minutes.
Dependencies are inferred from the claim text.