A tire comprising a sidewall with at least one high-contrast sidewall element
A tire sidewall composition with isoprene elastomer, anti-ozone wax, and rubber powder microparticles addresses ozone-induced degradation, ensuring long-lasting high-contrast visibility in tire sidewalls.
FR3148435B1Active Publication Date: 2026-06-12MICHELIN & CO (CIE GEN DES ESTAB MICHELIN)
Patent Information
- Authority / Receiving Office
- FR · FR
- Patent Type
- Patents
- Current Assignee / Owner
- MICHELIN & CO (CIE GEN DES ESTAB MICHELIN)
- Filing Date
- 2023-05-03
- Publication Date
- 2026-06-12
Smart Images
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Abstract
The present invention relates to a tire (1) for a vehicle, comprising at least one sidewall (2), with at least one high-contrast sidewall element (3) consisting of a texture comprising raised protrusions (4, 5) relative to a sidewall surface (21) in contact with atmospheric air, and / or recesses (6) relative to the sidewall surface (21). The invention describes a sidewall rubber composition (2) exhibiting a good compromise between efflorescence reduction and resistance to ozone attack. According to the invention, the isoprene elastomer content is at least 27.00% by weight, the ozone-blocking wax content is at least 0.60% by weight and at most 1.70% by weight, and the weight ratio between the content of rubber powder microparticles having a size less than 74 µm and the content of ozone-blocking wax, expressed as a percentage by weight, is at least 0.50. Figure for the abstract: Fig. 1
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