Rubber compositions and pneumatic tires using the same

Details Rubber compositions and pneumatic tires using the same Rubber compositions and pneumatic tires using the same

1996-08-29

1998-03-10

Cain, Edward J.

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...

524496, C08K 300

Patent

active

057262373

ABSTRACT:
Rubber compositions and pneumatic tires in which the rubber compositions are used. In the rubber compositions, per 100 parts by weight of natural rubber and a conjugated diene-base synthetic rubber such as a butadiene-styrene copolymer rubber, is compounded 30 to 120 parts by weight of a carbon black having both a characteristic (concentration of >C.dbd.O functional groups)/N.sub.2 SA.gtoreq.4.0.times.10.sup.-4 and a characteristic (concentration of >C.dbd.O functional groups).gtoreq.(concentration of --OH functional groups).sup.2 -0.1.times.(concentration of --OH functional groups)+0.03, or is compounded 30 to 120 parts by weight of a carbon black having the characteristic (concentration of >C.dbd.O functional groups)/N.sub.2 SA.gtoreq.4.0.times.10.sup.-4 and 0.05 to 5.0 parts by weight of at least one of a silane coupling agent, a hydrazide compound and a thiadiazole compound. The rubber compositions of the present invention and pneumatic tires using the rubber compositions excel in low rolling resistance and wet skid resistance.

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