PROBLEM TO BE SOLVED: To provide a method capable of producing a tread rubber for retreading which suppresses an increase in Mooney viscosity caused by storage.SOLUTION: There is provided a method for producing a first tread rubber for retreading which comprises: a step of coagulating a rubber latex before coagulation treatment containing carbon black to obtain a coagulated product; a step of adding a compound exemplified by sodium (2Z)-4-[4-aminophenyl)amino]-4-oxo-2-butenoate, which is a sodium ion, potassium ion or lithium ion salt comprising an acid amide bond obtained by reacting a phenylenediamine derivative with maleic acid, to the coagulated product containing water; and a step of dispersing the compound in the coagulated product.SELECTED DRAWING: None
リトレッド用トレッドゴムの製造方法および更生タイヤの製造方法
2021-01-27
Patent
Electronic Resource
Japanese
IPC: | C08J Verarbeitung , WORKING-UP / B29D PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE , Herstellen besonderer Gegenstände aus Kunststoff oder aus Stoffen in plastischem Zustand / 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 |