Regulator and method for controlling microstructure of butadiene homopolymer and copolymer

This invention belongs to butadiene anionic polymerization. In industrial production, the content of 1, 2-structure in butadiene rubber changes with the polymerization temperature. The temperature has an impact on product quality as well. The regulator is a binary compound system, consisting of two kinds of separate regulators, A and B. A's structure is as the picture below. R is alkyl more than 6 carbons. M is alkali metal, sodium or kalium. B is Lewis base. The proportion of A and B is 1-15. The controlling method is as followings: prepare polymerized solution of butadiene and butadiene-styrene monomer in the hydrocarbon solvent. Initiate the polymerization reaction by adding regulator mentioned above and organolithium. React at 40deg C-100 deg C for 1-4 hours. Initiating agent is 0.2-2mmol per 100g monomer. The mole ratio of A regulator and initiating agent is 0.1-1.0. While the mole ration of B regulation and initiating agent is 1.0-15. Vacuum dry the product to get the homopolymer or multipolymer of butadiene rubber. This invention is advantageous in the reduced usage amount of regulator and temperature insensitive.