A method is disclosed for producing a tire rubber composition containing silica, a crosslinking compounding ingredient, and a rubber component containing 70 mass% to 100 mass% of a hydrogenated copolymer. The method includes hydrogenating an aromatic vinyl-conjugated diene copolymer, having a weight average molecular weight of 300,000 or more as measured by gel permeation chromatography, and having a hydrogenation rate of a conjugated diene moiety of 80 mol% or more. The method incudes: a first step of mixing 50 mass% to 95 mass% of 100 mass% of the hydrogenated copolymer with a total amount of the silica; a second step of mixing a rest of the hydrogenated copolymer with a mixture obtained in the first step; and a third step of mixing the crosslinking compounding ingredient with a mixture obtained in the second step.
METHOD FOR PRODUCING TIRE RUBBER COMPOSITION, TIRE RUBBER COMPOSITION, AND PNEUMATIC TIRE
2023-08-31
Patent
Electronic Resource
English
IPC: | B60C VEHICLE TYRES , Fahrzeugreifen / C08F MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS , Makromolekulare Verbindungen, erhalten durch Reaktionen, an denen nur ungesättigte Kohlenstoff-Kohlenstoff-Bindungen beteiligt sind / C08K Verwendung von anorganischen oder nichtmakromolekularen organischen Stoffen als Zusatzstoffe , USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS / C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen |
RUBBER COMPOSITION, RUBBER COMPOSITION FOR TIRE AND PNEUMATIC TIRE
European Patent Office | 2016
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