| 简介 |
Provided is a method for producing a conjugated diene rubber that can be used as a starting material for crosslinked rubber with which low-fuel consumption is improved and which is used for tire treads, and the like. Also provided is a method for producing a modified conjugated diene rubber, comprising (a) a step for obtaining a modified conjugated diene polymer comprising functional groups (II) by reacting a conjugated diene polymer, which has alkali metal or alkaline earth metal active terminals and is obtained by polymerization of a conjugated diene compound or a conjugated diene compound and an aromatic vinyl compound, and a hydrocarbyloxysilane compound having at least one each of functional group (I) and functional group(II) per molecule and (b) a step for obtaining a modified conjugated diene rubber by mixing the modified conjugated diene polymer obtained in step (a) and at least one selected from the group consisting of organic acid compounds and organic acid derivatives. Functional group (I) is a hydrocarbyloxysilyl group and functional group (II) is a nitrogen-containing group obtained by substituting two hydrogen atoms of the primary amino groups with protector groups. |
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