METHOD FOR PRODUCING RUBBER COMPOSITION

• Main Author: TAKEDA KEIJI
• Format: Patent
• Language: English; Japanese
• Published: 29.07.2021
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; DEVICES OR ARRANGEMENTS RELATED TO TYRES; GENERAL PROCESSES OF COMPOUNDING; MAKING GRANULES OR PREFORMS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; PREPARATION OR PRETREATMENT OF THE MATERIAL TO BESHAPED; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIALCONTAINING PLASTICS; REPAIRING, OR CONNECTING VALVES TO, INFLATABLE ELASTIC BODIESIN GENERAL; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; TYRE CHANGING OR REPAIRING; TYRE INFLATION; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; VEHICLE TYRES; VEHICLES IN GENERAL; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; WORKING-UP

To suppress the viscosity rise of an unvulcanized rubber composition while maintaining excellent low heat build-up properties due to the use of a tetrazine compound.SOLUTION: A method for producing a rubber composition according to an embodiment includes adding carbon black and a tetrazine compound to a first diene rubber to be mixed together with a mixer, and discharging the mixture; and adding a second diene rubber and silica to the acquired mixture to be mixed together with the mixer, and discharging the mixture.SELECTED DRAWING: None 【課題】テトラジン化合物を用いたことによる優れた低発熱性を維持しつつ、未加硫ゴム組成物の粘度上昇を抑える。【解決手段】実施形態に係るゴム組成物の製造方法では、第１ジエン系ゴムにカーボンブラックとテトラジン化合物を添加し混練機で混合して混合物を排出し、得られた混合物に第２ジエン系ゴムとシリカを添加し混練機で混合して混合物を排出する。【選択図】なし