Cabot Corporation

Gino Panciroli

John M Branan, Jr

Kenneth W Babcock

Roscoe W Taylor

Chiuna-Huei Shieh

Carbon blacks having a CTAB of greater than 155 m.sup.2 /g; an I.sub.2 No. of greater than 180 mg/g; a N.sub.2 SA of greater than 160 m.sup.2 /g; a Tint value of greater than 145%; a CDBP of 90-105 cc/100 g; a DBP of 115-140 cc/100 g; a .DELTA.DBP (.DELTA.DBP=DBP-CDBP) of 20-35 cc/100 g; a .DELTA.D50 of less than 40 nm; a Dmode of 40-65 nm; .DELTA.D50/Dmode ratio of 0.55-0.67; and an ASTM Aggregate Volume less than 137,000 (nm).sup.3. Also disclosed are rubber compositions containing the carbon blacks which exhibit superior handling and cornering performance properties, increased abrasion resistance and improved traction.

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Ravenna, Italy

Gino Panciroli