Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
Patent
1992-08-28
1994-03-15
Michl, Paul R.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
525236, 525237, C08L 700, C08L 900, C08L 906
Patent
active
052946630
ABSTRACT:
The present invention provides an emulsion polymerization synthetic isoprene-styrene/butadiene rubber for use in improved tire tread compositions is provided. The improved composition is a blend of a 1,4 cis-polyisoprene such as natural rubber and a synthetic rubber produced by emulsion polymerization which synthetic rubber includes isoprene and either styrene or butadiene or both styrene and butadiene. The tire tread composition has an excellent balance of good wear resistance and low rolling resistance as well as a low T.sub.g and good traction. These improved qualities for tire tread compositions have heretofore been unavailable in rubbers utilizing emulsion polymers, and have been achievable only with tire compositions including synthetic rubbers that are produced by solution polymerization.
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Fabris Hubert J.
Hargis Ivan G.
Livigni Russell A.
Wise Richard M.
General Tire, Inc.
Michl Paul R.
Szekely Peter
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