Patent ID: 11945937
Assignee: ENEOS MATERIALS CORPORATION
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C  B  Y | IPC B  C

Claim 0:
1. A method for producing a modified conjugated diene-based polymer, the method comprising:
reacting a conjugated diene-based polymer comprising an active terminal, obtained by polymerizing a monomer comprising a conjugated diene compound in the presence of an alkali metal compound, with a compound of formula (1):, wherein
R1 and R2 are independently a hydrogen atom or a C1 to C8 hydrocarbyl group, or R1 and R2 taken together are a C5 to C8 ring together with the carbon atom to which R1 and R2 bond, R1 and R2 not simultaneously being a hydrogen atom,
R5 and R6 are independently a hydrogen atom or a C1 to C8 hydrocarbyl group, or R5 and R6 taken together are a C5 to C8 ring together with the carbon atom to which R5 and R6 bond, R5 and R6 not simultaneously being a hydrogen atom,
R3 and R4 are independently a C1 to C6 hydrocarbylene group,
R7 is a C1 to C10 hydrocarbylene group,
X1 is a C1 to C4 hydrocarbyloxy group,
X2 and X3 are independently a C1 to C4 hydrocarbyl group or hydrocarbyloxy group,
m is an integer in a range of from 1 to 3, and
when m is 2 or 3, a plurality of groups R3, R7, X1, X2, or X3 are identical to or different from one another.