Method for improving the aging resistance of the sidewalls of retreaded tires
AssigneeBridgestone/Firestone, Inc.
InventorsYoshihiro Makino, Larry B. Elkins
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Abstract
A method for improving the aging resistance of the sidewalls of retreaded tires is provided. The method involves the steps of treating the surface of the sidewalls of the worn tire to be retreaded with an aqueous solution or dispersion containing a film-forming polymer and an antiozonant, retreading the treated tire and then curing the treated retreaded tire thereby causing the antioxidant to migrate into the inner portion of the sidewall. The method of the invention is particularly useful for improving the aging resistance of the sidewalls of worn truck and bus tires which are conventionally retreaded several times.
Claims7
A method for improving the aging resistance of the sidewalls of retreaded tires comprising the steps of:
- (a) treating the surface of the sidewalls of a worn tire to be retreaded with an aqueous solution or dispersion containing a film-forming polymer and an antiozonant;
- said treated tire;
- and
- (b) retreading
- (c) curing the treated tire in such a manner as to apply heat to the treated sidewalls thereby causing the antiozonant to migrate into the inner portion of the sidewall.
Dependencies are inferred from the claim text.