| abstract |
A first step of polymerizing a compound represented by the following formula (1) by using a polymerization initiator to obtain a polymer block of a compound represented by the formula (1) having an active terminal; And a second step of polymerizing a monomer comprising a diene compound. The present invention also provides a method for producing a conjugated diene rubber. (In the formula (1), R 1 is a hydrogen atom or a hydrocarbon group having 1 to 20 carbon atoms, R 2 is a hydrocarbon group having 3 to 20 carbon atoms containing a cyclic structure, R 3 and R 4 are each independently , A hydrogen atom or a hydrocarbon group of 1 to 20 carbon atoms, and X is an arbitrary monovalent group.) |