Aromatic vinyl resin material and molded products thereof
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United States of America Patent
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Aug 13, 2002
Issued Date -
N/A
app pub date -
Feb 2, 2001
filing date -
Oct 24, 1997
priority date (Note) -
Expired
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Abstract
The present invention provides resin materials for producing molded products endowed with excellent heat resistance, solvent resistance, toughness, tensile elongation, and transparency. Specifically, there are provided aromatic vinyl resin materials which have the following properties: Storage elasticity values G'(1.0) and G'(0.1) as measured at 300.degree. C., a strain .gamma. of 20%, and a frequency of 1.0 Hz or 0.1 Hz satisfy the expression, log[G'(1.0)/G'(0.1)].ltoreq.0.6, the heat of fusion .DELTA.H as measured over the range 200-295.degree. C. is 8 to 50 (J/g), and the .sup.1 H-NMR peak integrated values for the fraction corresponding to the temperature range of not lower than 50.degree. C., as collected from temperature rising election fraction on the Soxhlet extraction residue by use of cyclohexane or o-dichlorobenzene, satisfy the relation [1.8-2.1 (ppm)]/[1.0-1.7(ppm))<0.49.
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