Blends based on vinyl-aromatic polymers endowed with high mechanical characteristics
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United States of America Patent
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Mar 30, 1993
Grant Date -
N/A
app pub date -
Oct 2, 1990
filing date -
Oct 3, 1989
priority date (Note) -
Expired
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Abstract
Blends based on vinyl-aromatic polymers endowed with high mechanical characteristics, even after successive processings at temperatures equal to or higher than 200.degree. C. and unvaried rheological properties, comprising: 10 to 90% by weight of a vinyl-aromatic polymer containing from 0.5 to 5% by weight of a vinyl-aromatic monomer conjugated diene linear block copolymer and from 5 to 15% by weight of a diene rubber; 5-50% by weight of a polyolefin; and 5-40% by weight of a vinyl-aromatic monomer-conjugated diene star block radial copolymer, having a diene content comprised between 5 and 35% by weight; the sum of the three components being equal to 100%.
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