Rubber mixture and tire

Details Rubber mixture and tire Rubber mixture and tire

C - Chemistry, Metallurgy

08

L

C08L 9/00 (2006.01) C08K 3/04 (2006.01) C08K 3/36 (2006.01) C08K 5/00 (2006.01) C08L 7/00 (2006.01)

Patent

CA 2544592

The invention relates to a sulfur-vulcanizable rubber mixture, especially for the treads of tires, which comprises at least one diene rubber, liquid polybutadiene having a molecular weight of from 1500 to 10000 mg/mol and a vinyl content of from 15 to 50 %, at least one polar filler, at least one high- structure black having a iodine adsorption number of from 115 to 200 g/kg and a DBP number of from 125 to 160 ml/100g and at least one glyceride and/or factice. The inventive tires have good abrasion characteristics, excellent wet traction and traction on ice, and snow and good dry braking characteristics.

L'invention concerne un mélange de caoutchouc vulcanisable au soufre, notamment pour des bandes de roulement de pneus. Afin de conférer au pneu une bonne résistance à l'usure, une bonne adhérence sur sol mouillé et d'assurer une bonne traction sur la glace et la neige, ainsi qu'un bon freinage sur sol sec, ce mélange de caoutchouc contient: au moins un caoutchouc diénique; un polybutadiène liquide présentant un poids moléculaire compris entre 1500 et 10000 g/mol et une teneur en vinyle comprise entre 15 et 50 %; au moins une charge polaire; au moins un noir de carbone de structure élevée présentant un indice d'absorption d'iode compris entre 115 et 200 g/kg et un indice DBP compris entre 125 et 160 ml/100 g; et au moins un glycéride et/ou un factice.

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