Diene rubbers containing carboxyl groups

C - Chemistry – Metallurgy – 08 – K

Patent

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Details

C08K 3/00 (2006.01) B60C 1/00 (2006.01) C08C 19/20 (2006.01) C08K 5/37 (2006.01) C08L 19/00 (2006.01)

Patent

CA 2372512

The invention relates to rubber mixtures containing diene rubber groups which contain 0.1 - 2 wt. % carboxyl groups and have a glass transition temperature of -120 to -50~. The invention also relates to mixtures comprising filling materials, optionally other rubbers and rubber adjuvants and vulcanizates produced therefrom. The inventive rubber mixtures are suitable for use in the production of fully reinforcing, abrasion-resisting shaped bodies, especially in the production of tyre treads which exhibit a particularly high degree of anti-skid resistance in wet driving conditions, are resistant to abrasion and offer low rolling resistance. Said rubber mixtures are also suitable for use in the production of the side walls of tyres, where they display resistance to fatigue.

L'invention concerne des mélanges de caoutchouc contenant des caoutchoucs diéniques d'une teneur en groupes carboxyle de 0,1 à 2 % en poids et d'une température de transition vitreuse de -120 à- 50 ·C, ainsi que leurs mélanges avec des charges, éventuellement avec d'autres caoutchoucs et adjuvants de caoutchouc, et les vulcanisats obtenus à partir de ces produits. Les mélanges de caoutchouc selon l'invention sont utilisés pour la fabrication de pièces profilées hautement renforcées, résistant à l'usure, en particulier pour la fabrication de bandes de roulement de pneumatiques présentant d'excellentes propriétés, notamment d'antidérapage dans les conditions humides et de résistance à l'usure et une faible résistance au roulement, ainsi que pour la fabrication de flancs de pneumatiques d'une résistance à la fatigue particulièrement bonne.

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