To provide a method of producing a rubber composition for a tire, capable of giving a vulcanized rubber having excellent wear resistance and tear resistance.SOLUTION: The method of producing a rubber composition for a tire, which contains a rubber wet master batch obtained by using at least carbon black, a dispersion solvent, and a rubber latex solution as raw materials, includes: a step (I) of mixing the carbon black, the dispersion solvent, and the rubber latex solution to produce a carbon black-containing rubber latex solution; a step (II) of coagulating the obtained carbon black-containing rubber latex solution to produce a carbon black-containing rubber coagulum; and a step (III) of dehydrating/drying the obtained carbon black-containing rubber coagulum to produce the rubber wet master batch. In the step (I), the mechanical stability of the rubber latex solution measured according to ASTM D1076-59 is 300 seconds or more. In the step (II), the pH of the carbon black-containing latex solution before coagulation is 6.0-8.5.SELECTED DRAWING: None
タイヤ用ゴム組成物の製造方法
2022-05-13
Patent
Elektronische Ressource
Japanisch
IPC: | C08J Verarbeitung , WORKING-UP / B60C VEHICLE TYRES , Fahrzeugreifen / 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 |