Tread with Antidegradant Reservoir
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United States of America Patent
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Issued Date -
Apr 26, 2012
app pub date -
Aug 31, 2007
filing date -
Aug 31, 2007
priority date (Note) -
Abandoned
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Abstract
A tread band (16) and tire (10) having a tread band (16) bonded thereto, particular embodiments including a tread band (16) having an antidegradant reservoir (34) forming a part of the tread band (16) and having a rubber composition mixed with an antidegradant at a higher antidegradant concentration than an adjacent rubber composition (38) with the antidegradant reservoir (34) being in diffusive communication with the base surface (22) of a tread shoulder (36). The tread band (16) may further include a barrier layer (42) separating at least a portion of the antidegradant reservoir (34) from the adjacent rubber composition (38) Particular embodiments include a tread band (16) having an antidegradant reservoir (34) forming a part of the tread band (16), the antidegradant reservoir (34) comprising a rubber composition mixed with an antidegradant and a barrier layer (42) bordering at least a portion of the antidegradant reservoir, wherein the barrier layer (42) inhibits diffusion of the antidegradant from the antidegradant reservoir (34) through the barrier layer (42).
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