Rubber mixtures containing silicic acid, soot and rubber gel

C - Chemistry – Metallurgy – 08 – L

Patent

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Details

C08L 21/00 (2006.01) C08K 3/00 (2006.01) C08K 3/36 (2006.01) C08L 9/06 (2006.01)

Patent

CA 2450694

The invention relates to rubber mixtures based on silicic acid and styrene/butadiene rubber solutions filled with soot, wherein the silicic acid is partially substituted by rubber gels. The vulcanised rubber produced from the inventive rubber mixtures is characterised in that has an improved hysteresis quality at 0 ~C and 60 ~C, and at a result an improved anti-slip resistance when wet and an improved resistance to rolling. Furthermore, said vulcanised rubber has a good resistance to abrasion. The processing quality of the unvulcanised rubber mixtures (compound viscosity and Mooney relaxation) does not deteriorate as a result of partial silicic acid substitution. Said inventive rubber mixtures are used for producing tyres and tyre components of various types and for producing technical rubber articles.

L'invention concerne des mélanges de caoutchouc à base d'acide silique et de caoutchoucs styrène-butadiène en solution contenant du noir de carbone, dans lesquels l'acide silique est partiellement substitué par des gels de caoutchouc. Les vulcanisats produits à partir des mélanges de caoutchouc selon la présente invention sont caractérisés en ce qu'ils présentent un comportement d'amortissement amélioré à 0 ·C et 60 ·C, et par conséquent une meilleure qualité antidérapante en cas d'humidité et une résistance améliorée au roulement. En outre, lesdits vulcanisats résistent très bien à l'usure. La substitution partielle de l'acide silique permet d'éviter l'altération du comportement au traitement des mélanges de caoutchouc non vulcanisés (viscosité des composés et relâchement Mooney). Lesdits mélanges de caoutchouc sont conçus pour produire des pneus et des composants de pneu extrêmement variés, ainsi que des articles techniques en caoutchouc.

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