METHOD FOR PRODUCING END-MODIFIED POLYBUTADIENE OR END-MODIFIED HYDROGENATED POLYBUTADIENE AND COMPOSITION CONTAINING SAME

摘要

It is an object of the present invention to provide a method for producing a terminal-modified polybutadiene or terminal-modified hydrogenated polybutadiene that does not become colored or white and turbid, without using an organotin compound. The production method of the present invention includes reacting an acrylate or methacrylate represented by formula (I), a diisocyanate compound represented by formula (II), and a polybutadiene or hydrogenated polybutadiene having a hydroxyl group at a polymer terminal, represented by formula (III), in the presence of at least one selected from an organoaluminum compound and an organozinc compound (with the proviso that zinc naphthenate is excluded).;

主权项

1. A method for producing a terminal-modified polybutadiene or terminal-modified hydrogenated polybutadiene represented by formula (IV):(wherein R1 represents a hydrogen atom or a methyl group, R2 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, or a combined group thereof, R3 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 a polymer chain obtained by polymerizing butadiene, or a polymer chain obtained by hydrogenating the polymer chain), comprising reacting an acrylate or methacrylate represented by formula (I):(wherein R1 and R2 represent the same meaning as described above), a diisocyanate compound represented by formula (II):(wherein R3 represents the same meaning as described above), and a polybutadiene or hydrogenated polybutadiene having a hydroxyl group at a polymer terminal, represented by formula (III):
PBOH)m   (III)(wherein PB and m represent the same meaning as described above), in the presence of at least one selected from an organoaluminum compound and an organozinc compound (with the proviso that zinc naphthenate is excluded).