| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for producing a conjugated diene-based polymer not using fossil resources as a starting substance.SOLUTION: A method for producing a conjugated diene-based polymer comprises bulk polymerizing a monomer (A) containing a bio-conjugated diene monomer synthesized from a resource of biologic origin including plant resources, where the monomer (A) is bulk polymerized in the presence of less than 20 mass% of an organic solvent (B) to the total mass [(A)+(B)+(C)] of the monomer (A) containing the bio-conjugated diene monomer, the organic solvent (B) and a produced polymer (C). |
