| abstract |
(57) [Abstract] [Purpose] By controlling side reactions in the synthesis of isobutene-based polymers, the molecular weight can be controlled, the efficiency of the initiator can be increased, and by-products can be reduced to achieve efficient and uniform isobutene-based polymers. To provide a method capable of producing a polymer. When an isobutene monomer is polymerized using an aromatic initiator and a catalyst, either a chlorinated hydrocarbon or an aromatic hydrocarbon is used alone or in a solvent mixed with an aliphatic hydrocarbon, Dielectric constant of reaction liquid is 1 ~ And a solubility parameter of 7.5 to 9.0. A method for producing an isobutene-based polymer. |