Rubber compositions
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United States of America Patent
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May 7, 1985
Grant Date -
N/A
app pub date -
Jan 27, 1984
filing date -
Jan 31, 1983
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A rubber composition having improved wet skid resistance and rolling resistance is disclosed, which comprises (A) 10-90% by weight of polybutadiene rubber having a content of cis-1,4-bond at least 80% and an average chain length of cis-1,4-bond of not less than 110, and (B) 10-90% by weight of random styrene-butadiene copolymer rubber obtained by copolymerization in the presence of an organic metal catalyst and having a content of bound styrene of not more than 40% by weight and a content of 1,2-bond in total butadiene unit of 30-95%.
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