RUBBER COMPOSITION FOR TIRE SIDEWALL AND PNEUMATIC TIRE
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United States of America Patent
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Issued Date -
Aug 29, 2013
app pub date -
Dec 18, 2012
filing date -
Feb 29, 2012
priority date (Note) -
Abandoned
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Abstract
A rubber composition for a tire sidewall includes 100 parts by mass of a rubber component comprising from 40 to 70% by mass of natural rubber and/or an isoprene rubber, and from 60 to 30% by mass of a butadiene rubber having 96% or more of cis-1,4 bond content, polymerized using a rare earth element-based catalyst, from 25 to 50 parts by mass of a filler comprising carbon black and/or silica, and from 0.3 to 3 parts by mass of a vulcanization accelerator, wherein the vulcanization accelerator comprises from 0.1 to 1.5 parts by mass of a sulfenimide compound represented by the following formula (1) and a sulfenamide-based vulcanization accelerator;
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