| abstract |
A first step of polymerizing a monomer containing a conjugated diene compound in an inert solvent using a polymerization initiator to obtain a conjugated diene polymer chain having an active end, and the conjugated diene system having the active end The polyorganosiloxane represented by the following general formula (1) is added to the polymer chain in 1 mol of the polymerization initiator used in the first step, and the siloxane structure (-Si-O- in the polyorganosiloxane is used. ), The second step in which 1 mol or more in terms of the number of repeating units is added and reacted, and the conjugated diene polymer chain obtained by reacting the polyorganosiloxane obtained in the second step are represented by the following general formula (2). And a third step of reacting the compound to be produced with a conjugated diene rubber. |