Patent ID: 8822600

Claim:
A method for producing a terminal acrylic-modified polybutadiene or terminal acrylic-modified hydrogenated polybutadiene represented by formula (IV): where: R 1 represents a hydrogen atom or a methyl group; R 2 represents a C1 to C10 alkylene group having a straight chain or a branched chain, or a C3 to C8 cycloalkylene group optionally having a C1 to C6 alkyl group as a substituent; R 3 represents: a C1 to C10 alkylene group having a straight chain or a branched chain; a C3 to C8 cycloalkylene group optionally having a C1 to C6 alkyl group as a substituent; an arylene group optionally having a halogen atom, a C1 to C6 alkyl group, or a C1 to C6 alkoxy group as a substituent; a heteroarylene group optionally having a halogen atom, a C1 to C6 alkyl group, or a C1 to C6 alkoxy group as a substituent; or a combined group thereof; m represents 1 or 2; and PB represents polybutadiene or hydrogenated polybutadiene, the method comprising reacting an acrylate or methacrylate represented by formula (I): with a diisocyanate compound represented by formula (II): OCN—R 3 —NCO (II) and with a polybutadiene or a hydrogenated polybutadiene having a hydroxyl group at a polymer terminal, represented by formula (III): PB OH) m (III) in the presence of a catalytic amount of at least one selected from: an organobismuth compound represented by formula (XIII): where each R 12 independently represents a C1 to C20 alkyl group having a straight chain or a branched chain, and a tetraalkoxyzirconium compound represented by formula (IX): Zr—(OR 21 ) 4 (IX) where each R 21 independently represents a C1 to C20 alkyl group having a straight chain or a branched chain.