Styrene polymer molding material and process for preparing same
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United States of America Patent
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-
Feb 2, 1993
Grant Date -
N/A
app pub date -
May 14, 1990
filing date -
May 31, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
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 points of 285.degree. C. or higher, and a process for producing the same by melting a styrene polymer having a high degree of syndioacticity and then molding it under a stress of 1.times.10.sup.6 dyne/cm.sup.2 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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