Styrene polymer and molded object obtained by molding the polymer
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United States of America Patent
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Mar 19, 2002
Grant Date -
N/A
app pub date -
Oct 4, 2001
filing date -
Apr 14, 1999
priority date (Note) -
Expired
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Abstract
Provided is a styrenic polymer having a syndiotactic structure, of which the ratio P of the angular frequency, .omega..sub.3000 (unit: rad/sec), when its storage elastic modulus G' measured through dynamic viscoelastometry is 3000 (Pa), to the angular frequency thereof, .omega..sub.30 (unit: rad/sec), when its storage elastic modulus G' is 30 (Pa), P=[.omega..sub.3000 /.omega..sub.30 ] satisfies the following formula (1): P=[.omega..sub.3000 /.omega..sub.30 ].gtoreq.25 (1). The polymer has good melt flowability and improved moldability and melt tension, still having excellent mechanical strength, heat resistance and solvent resistance.
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