MODIFIED DIENE POLYMER RUBBER, METHOD FOR PRODUCING THE SAME, AND RUBBER COMPOSITION

• Main Authors: INAGAKI MASANARI, MAEDA NAOAKI, OSHIMA MAYUMI
• Format: Patent
• Language: English
• Published: 25.10.2007
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS

PROBLEM TO BE SOLVED: To provide a modified diene polymer rubber excellent in resiliency and therefore fuel consumption reduction, to provide a method for producing the same, and to provide a rubber composition using the polymer rubber. SOLUTION: The modified diene polymer rubber is obtained by reacting a compound of formula (I) with an alkali metal-terminated active conjugated diene polymer obtained by reacting a conjugated diene monomer or both a conjugated diene monomer and an aromatic vinyl monomer in the presence of an alkali metal catalyst in a hydrocarbon solvent. In formula (1), R1to R4are each a 1-8C alkyl group; and R5is a 1-8C alkyl group or an optionally substituted phenyl group. From the viewpoint of the properties of the resultant polymer and availability in industrial practice, the aromatic vinyl monomer is desirably ethylene. COPYRIGHT: (C)2008,JPO&INPIT