Process for preparing dynamically vulcanized alloys
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United States of America Patent
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Jan 17, 2017
Grant Date -
Jul 30, 2015
app pub date -
Apr 9, 2015
filing date -
Dec 20, 2012
priority date (Note) -
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Abstract
This invention relates to the preparation of a dynamically vulcanized alloy comprising at least one elastomer and at least one thermoplastic resin, having a G′ at 1% strain and 100° C. as determined according to ASTM D7605 of about 4,500 to about 7,500 kPa. More specifically, the process produces dynamically vulcanized alloys with unique morphological features which have good impermeability and low temperature flexibility. In the process, the thermoplastic resin is added into the extruder in two stages with an intermediate addition of a compatibilizer. Also during the final addition of thermoplastic resin, the elastomeric curatives are added to the extruder.
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