Modified conjugated diene polymer, modified rubber composition comprising same, and method for producing modified conjugated diene polymer
AssigneeLG Chem, Ltd.
InventorsMoon-Seok Chun, Soo-Yong Lee, Seong-Du Lee
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Abstract
Disclosed are a method of preparing a modified conjugated diene-based polymer, a modified conjugated diene-based polymer prepared thereby, and a rubber composition and a tire, including the modified conjugated diene-based polymer. The method of preparing the modified conjugated diene-based polymer includes (a) polymerizing a vinyl aromatic monomer and a conjugated diene monomer using an organo-alkali metal compound in the presence of a hydrocarbon solvent, thus forming an active polymer having an alkali metal end and (b) coupling or linking the active polymer having the alkali metal end with a compound represented by Chemical Formula 1.
Claims18
A method of preparing a modified conjugated diene-based polymer, comprising:
- (a) polymerizing a conjugated diene monomer, or a vinyl aromatic monomer and a conjugated diene monomer, using an organo-alkali metal compound in presence of a hydrocarbon solvent, thus forming an active polymer having an alkali metal end;
- and
- (b) coupling or linking the active polymer having the alkali metal end with a compound represented by Chemical Formula 1 below:
- (R1—O)nR23-nSi—R3-A [Chemical Formula 1]
- wherein R1 is a C1-C20 hydrocarbon containing at least one oxygen or nitrogen, R2 and R3 are each a C1-C20 hydrocarbon, A is an amine, and n is an integer of 1 to 3;
- when n is 2 or 3, two or three R1s are identical to or different from each other;
- and when n is 1, two R2s are identical to or different from each other.
A modified conjugated diene-based polymer, which is configured such that an end of a random copolymer comprising a conjugated diene monomer and a vinyl aromatic monomer is modified with a compound represented by Chemical Formula 1 below:
- (R1—O)nR23-nSi—R3-A [Chemical Formula 1]
- wherein R1 is a C1-C20 hydrocarbon containing at least one oxygen or nitrogen, R2 and R3 are each a C1-C20 hydrocarbon, A is an amine, and n is an integer of 1 to 3;
- when n is 2 or 3, two or three R1s are identical to or different from each other;
- and when n is 1, two R2s are identical to or different from each other.
A modified conjugated diene-based polymer, which is configured such that an end of an active polymer comprising a conjugated diene monomer is modified with a compound represented by Chemical Formula 1 below:
- (R1—O)nR23-nSi—R3-A [Chemical Formula 1]
- wherein R1 is a C1-C20 hydrocarbon containing at least one oxygen or nitrogen, R2 and R3 are each a C1-C20 hydrocarbon, A is an amine, and n is an integer of 1 to 3;
- when n is 2 or 3, two or three R1s are identical to or different from each other;
- and when n is 1, two R2s are identical to or different from each other.
Dependencies are inferred from the claim text.