| 摘要 |
There is provided a method for manufacturing a styrene polymer having a low number average molecular weight and a low polydispersity index, wherein the polymer has a number average molecular weight of 2000 or less and a polydispersity index of 1.01 to 1.10. For this purpose, the method includes polymerizing a styrene monomer in a solvent comprising an ether group-containing solvent in the presence of a polymerization initiator represented by formula [II] (wherein R 1 represents a hydrogen atom, an alkyl group, or a phenyl group; R 2 represents an alkyl group; R 3 represents an alkyl group or an alkoxy group, wherein when n is 2 or more, R 3 is the same or different from each other; and n represents an integer of 0 to 5), an organometallic compound represented by formula [III]: (R 8 ) m M [III] (wherein R 8 represents an alkyl group or an aryl group, wherein when m is 2 or more, R 8 is the same or different from each other; M represents an atom belonging to Group 2, 12 or 13 of the long period type periodic table; and m represents the valence of M), and an organic potassium compound, at a temperature between -10°C or higher and a boiling point of the solvent or lower. |
