Bridgestone Corporation

Nicole Capitos-Davis

Xiao-Dong Pan

Yaohong Chen

Mindaugas Rackaitis

James D Ulmer

Amy M Randall

Sheel Agarwal

Edward D Kelley

Sheel P Agarwal

Disclosed herein are rubber compositions suitable for use in tire treads comprising (a) at least one conjugated diene polymer or copolymer; (b) at least one filler; (c) a curative package; and (d) at least one of: (i) from 0.2 to 10 phr of at least one halogenated hydrocarbon wax, or (ii) from 0.2 to 10 phr of at least one silicone-containing wax comprising a functionalized polyalkylsiloxane, a functionalized polyalkylsilsesquioxane resin, or combinations thereof. In certain embodiments, the at least one halogenated hydrocarbon wax is a chlorinated hydrocarbon or a fluorinated hydrocarbon wax.

Rubber compositions including a functionalized wax

A method of measuring wear rate in an actual rubber tire. A section of rubber is cut out of an actual tire below the surface of the tire. The cut out section is attached to the surface of a first wheel. An abrasive substance is attached to the surface of a second wheel. The two wheels are rotated for a predetermined time, in opposite directions, in contact with each other, at uneven rates resulting in some slippage between the surfaces of the two wheels. The wear rate of the rubber tire is measured based on the changes in the cut section over time, in much less time and using less resources than required by conventional wear measurement methods.

Method of measuring wear rate in rubber tires

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Akron, OH, United States of America

Nicole Capitos-Davis