Thermoplastic elastomer composition
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United States of America Patent
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Issued Date -
Jun 14, 2007
app pub date -
Dec 15, 2006
filing date -
Jun 18, 2004
priority date (Note) -
Abandoned
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Abstract
The present invention provides a thermoplastic elastomer composition comprising (a) 100 parts by weight of an ethylene-.alpha.-olefin-unconjugated polyene copolymer rubber synthesized with a metallocene, (b) 20 to 350 parts by weight of a crystalline olefin resin, (c) 2 to 25 parts by weight of a cross-linking agent, and (d) 5 to 120 parts by weight of at least one polymer selected from the group consisting of a copolymer of a vinyl aromatic compound with a conjugated diene compound, a hydrogenated copolymer obtained by hydrogenating a copolymer of a vinyl aromatic compound with a conjugated diene compound, and a hydrogenated polymer obtained by hydrogenating a polymer of a conjugated diene compound. The thermoplastic elastomer composition according to the present invention is excellent in compression set and oil resistance at high temperatures and in flexibility and moldability.
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