Modified conjugated diene-based polymer, method for preparing same, and rubber composition comprising same
A conjugated diene, reactive polymer technology, applied in the direction of rolling resistance optimization, road transportation emission reduction, etc., can solve the problems of poor stretchability, wear resistance and processability, and achieve high modification rate and excellent rolling resistance. , excellent high temperature and low temperature viscoelastic effect
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Embodiment 1
[0145] Into the first reactor of the continuous reactor of three reactors in series, inject 1,3-butadiene solution (wherein 60% by weight of 1,3-butadiene is dissolved in In n-hexane), inject n-hexane at a rate of 49.11kg / h, inject 1,2-butadiene solution (wherein 2.0% by weight of 1,2-butadiene is dissolved in n-hexane) at a rate of 40g / h , inject the solution (wherein 10% by weight of tetramethylethylenediamine is dissolved in n-hexane) as the polar additive at the rate of 10.0g / h, and inject the initiator solution (wherein 10% by weight % of n-butyllithium dissolved in n-hexane). At this time, the temperature of the first reactor was controlled to be maintained at 65°C. At the point when the polymerization conversion rate reached 48%, the polymer thus obtained was transferred from the first reactor to the second reactor through a transfer pipe.
[0146] Then, inject 1,3-butadiene solution (60% by weight of 1,3-butadiene dissolved in n-hexane) into the second reactor at a r...
Embodiment 2
[0150] The modified conjugated diene-based polymer was prepared in the same manner as in Example 1, except that in Example 1, the modification reaction was carried out as follows: the third reactor was continuously supplied with an equivalent ratio of 0.3:0.7 A solution as the first modifier (wherein 20% by weight of N-(3-(1H-imidazol-1-yl)propyl)-3-(triethoxysilyl)-N-(3- (Triethoxysilyl)propyl)propan-1-amine dissolved in n-hexane) and a solution as a second modifier (20% by weight of 3,3'-(1,1,3, 3-tetramethoxydisiloxane-1,3-diyl)bis(N,N-diethylpropan-1-amine) dissolved in n-hexane) mixed solution.
Embodiment 3
[0152] The modified conjugated diene-based polymer was prepared in the same manner as in Example 1, except that in Example 1, the modification reaction was carried out as follows: the third reactor was continuously supplied with an equivalent ratio of 0.3:0.7 A solution as the first modifier (wherein 20% by weight of N-(3-(1H-imidazol-1-yl)propyl)-3-(triethoxysilyl)-N-(3- (Triethoxysilyl)propyl)propan-1-amine dissolved in n-hexane) and a solution as a second modifier (20% by weight of N-(3,6,9,12-tetra Oxahexadecyl)-N-(3-(triethoxysilyl)propyl)-3,6,9,12-tetraoxahexadecan-1-amine dissolved in n-hexane) mixed solution.
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