Elastomeric compositions comprising hydrocarbon polymer additives having improved impermeability
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United States of America Patent
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Jul 2, 2013
Grant Date -
Feb 11, 2010
app pub date -
Jun 26, 2009
filing date -
Aug 8, 2008
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Abstract
An elastomeric compositions having improved impermeability is disclosed. The cured elastomeric composition may comprise at least one C4-C7 monoolefin elastomer, a hydrocarbon polymer additive, and a clay. In some embodiments, the cured elastomeric composition has a permeation coefficient at 40° C. of 90 cc*mm/(m2-day) or less. In some embodiments, the elastomeric composition is substantially free of naphthenic oil.
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