Thermoplastic vulcanizate comprising interpolymers of ethylene/α-olefins
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United States of America Patent
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Aug 25, 2009
Grant Date -
Sep 7, 2006
app pub date -
Mar 15, 2006
filing date -
Mar 17, 2004
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Abstract
Thermoplastic vulcanizates comprise at least an ethylene/α-olefin interpolymer and at least one thermoplastic polymer, such as polyolefin. The ethylene/α-olefin interpolymer is a block copolymer having at least a hard block and at least a soft block. The soft block comprises a higher amount of comonomers than the hard block. The block interpolymer has a number of unique characteristics disclosed here. The block interpolymer is either used as a compatibilizer between a vulcanizable elastomer and a thermoplastic polymer or as a vulcanizable elastomer when it is in the EPDM form. The thermoplastic vulcanizates can be profiled extruded to make profiles and gaskets.
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