Rubber composition for use in tire
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United States of America Patent
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-
May 3, 1988
Issued Date -
N/A
app pub date -
Jul 6, 1987
filing date -
Jun 1, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
YA rubber composition for use in tire having improved rolling resistance, wet skid resistance and processability is disclosed, which comprises at least 20% by weight of a conjugated diolefin-vinyl-substituted aromatic hydrocarbon random copolymer. This random copolymer is produced by copolymerization with a particular initiator and coupling with a particular coupling agent, and has a content of vinyl-substituted aromatic hydrocarbon of 3-60% by weight, a content of tin bonded to copolymer of not less than 400 ppm and a Mooney viscosity (ML.sub.1+4.sup.100.degree.C.) of 20-200.
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