| 摘要 |
73162-24 Disclosed are a styrene polymer molding material which has a high degree of syndiotacticity, a weight average molecular weight of 50,000 or more, and at least one melting point of 285.degree.C or higher, and a process for producing the same by melting a styrene polymer having a high degree of syndiotacticity and then molding it under a stress of 1 x 106 dyne/cm2 or higher. The styrene polymer molding material of the present invention has excellent heat resistance. In addition, according to the process of the present invention, the above polymer molding material having excellent heat resistance can be prepared by a simple operation, and thus has marked advantages for practical use.
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