| abstract |
A modified conjugate that is particularly excellent in the interaction between a rubber component and carbon black and / or silica, can further improve the dispersibility of these fillers, and is excellent in low heat buildup, fracture characteristics, wear resistance, etc. A method for producing a die polymer or copolymer is provided. A method for producing a modified conjugated diene polymer or copolymer in which a modifier is reacted with an active site of a polymer having an organometallic active site in the molecule, wherein the modifier is a primary modifier. And (a) a reactive group that reacts with the active site to form a covalent bond with the polymer in the molecule, and (b) an identical or different species present on one straight chain from the reactive group A hydrolyzable functional group containing two or more nitrogen-containing functional groups and (c) at least one of the nitrogen-containing functional groups containing a primary or secondary amino group and containing silicon and an N-Si bond Protects the active proton with a hydrolyzable functional group containing 0 or 1 tertiary amino group and having a tertiary amino group or silicon containing N-Si bond. Primary amino group in the molecule Method for producing a modified conjugated diene polymer or copolymer characterized in that it is a compound containing no sex protons. [Selection figure] None |