Pneumatic tire having improved abrasion resistance

Details Pneumatic tire having improved abrasion resistance Pneumatic tire having improved abrasion resistance

1995-05-01

1997-11-04

Cain, Edward J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

524 87, 524495, 524496, C08K 517

Patent

active

056840730

ABSTRACT:
The cap tread portion composed of a rubber composition having a tan.delta. (0.degree. C.) of at least 0.45 and a tan.delta. (60.degree. C.) of at least 0.25 comprising (i) a p-phenylenediamine type antioxidant, 2,2,4-trimethyl-1,2-dihydroquinoline etc, and carbon black having a nitrogen specific surface area of at least 70 m.sup.2 /g and a 24M4DBP of at least 80 ml/100 g or (ii) a p-phenylenediamine based antioxidant, a 2,2,4-trimethyl-1,2-dihydroquinoline or other polymer mixture of a specific polymer content, and carbon black having a nitrogen specific surface area of at least 70 m.sup.2 /g and a 24M4DBP of at least 80 ml/100 g, blended with a rubber.

REFERENCES:
patent: 4158000 (1979-06-01), Nagasaki et al.
patent: 4519430 (1985-05-01), Ahmad et al.
patent: 5191003 (1993-03-01), Inui et al.
patent: 5420193 (1995-05-01), Matsue et al.

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