CONJUGATED DIENE POLYMER, RUBBER COMPOSITION, AND TIRE MEMBER

• Main Authors: KONOMOTO, Tsuneaki, MATSUOKA, Daigo, HAYATA, Daisuke
• Format: Patent
• Language: English; French; Japanese
• Published: 11.01.2024
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; DEVICES OR ARRANGEMENTS RELATED TO TYRES; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; 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

This conjugated diene polymer has an entanglement molecular weight of 2400 g/mol to 3000 g/mol, a Mooney viscosity measured at 100°C of 40 or higher, a Mooney stress relaxation (MSR) of 0.8 or higher, and a vinyl aromatic monomer unit content of 1 mass% to 18 mass%. Ce polymère de diène conjugué a un poids moléculaire d'enchevêtrement de 2400 g/mol à 3000 g/mol, une viscosité Mooney mesurée à 100 °C supérieure ou égale à 40, une relaxation de contrainte Mooney (MSR) supérieure ou égale à 0,8, et une teneur en unités monomères aromatiques vinyliques de 1 % en masse à 18 % en masse. 絡み合い点間分子量が２４００ｇ／ｍоｌ以上３０００ｇ／ｍоｌ以下であり、１００℃で測定したムーニー粘度が４０以上、かつムーニー応力緩和（ＭＳＲ）が０．８以上であり、　ビニル芳香族単量体単位の含有量が１質量％以上１８質量％以下である、　共役ジエン重合体。