Elastomeric sealant composition
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United States of America Patent
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-
Jan 3, 1984
Issued Date -
N/A
app pub date -
Apr 5, 1982
filing date -
Jul 14, 1975
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A carbon reinforced, partially cross-linked butyl rubber matrix sealant composition as described is particularly suitable for use as a self-healing tire puncture sealant. The sealant composition comprises a high average molecular weight butyl rubber and a low average molecular weight butyl rubber in a ratio of high to low molecular weight butyl rubber of between about 20/80 to 60/40, in admixture with a tackifier present in an amount between about 55 and 70 weight % of the composition. A partially hydrogenated block copolymer may be included in the admixture.
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