Method for protecting a tyre against ozone

Details Method for protecting a tyre against ozone Method for protecting a tyre against ozone

C - Chemistry, Metallurgy

08

J

C08J 7/04 (2006.01) B60C 1/00 (2006.01) B60C 13/00 (2006.01) C09D 175/04 (2006.01)

Patent

CA 2411344

The invention concerns a method for protecting against ozone at least part of the outer surface of a tyre, whereof the composition is based on substantially saturated diene elastomers which consists in: treating the surface of the vulcanised tyre so as to functionalise the elastomers of said surface; applying on said treated surface at least a coat consisting of an aqueous dispersion of polyurethane; allowing said coat to dry until a protective coating is formed.

Procédé de protection anti-ozone d'au moins une partie de la surface extérieure d'un pneumatique, dont la composition est à base d'élastomères diéniques essentiellement insaturés dans lequel: - on fait subir un traitement à la surface du pneumatique vulcanisé afin de fonctionnaliser les élastomères de cette surface, - on applique sur cette surface traitée au moins une couche constituée par une dispersion aqueuse de polyuréthanne, - et on laisse sécher cette couche jusqu'à la formation d'un revêtement de protection.

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