Carbon blacks and rubber compositions containing the carbon blacks
AssigneeCabot Corporation
InventorsYasumi Komai, Mizuo Soeda
Life of this patent
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Abstract
Carbon blacks having a N.sub.2 SA of from at least about 150 m.sup.2 /g to about 180 m.sup.2 /g, a DBP of about 125 cc/100 g or less, a Dmode of 70 nm or less, a N.sub.2 SA/I.sub.2 No. ratio of 0.85 to 0.98 and a .DELTA.DBP less than 210 cc/100 g which, when incorporated into rubber compositions, impart increased abrasion resistance, heterogenous abrasion resistance and grip performance properties. Also disclosed are rubber composition incorporating the novel carbon blacks.
Claims4
Carbon blacks characterized by having a N.sub.2 SA of from 150 m.sup.2 /g to 180 m.sup.2 /g, a DBP of 125 cc/100 g or less, a Dmode of 70 nm or less, a N.sub.2 SA/I.sub.2 No. ratio of 0.85 to 0.98 and a .DELTA.DBP less than 20 cc/100 g.
A rubber composition comprising about 100 parts, by weight, of a rubber and from about 10 to about 250 parts, by weight, of a carbon black having a N.sub.2 SA of from 150 m.sup.2 /g to 180 m.sup.2 /g, a DBP of 125 cc/100 g or less, a Dmode of 70 nm or less, a N.sub.2 SA/I.sub.2 No. ratio of 0.85 to 0.98 and a .DELTA.DBP less than 20 cc/100 g.
Dependencies are inferred from the claim text.