Modified cis-1,4-polybutadiene and its production method
A polybutadiene and manufacturing method technology, applied in vehicle parts, tire parts, special tires, etc., can solve the problems of poor dispersion, large hysteresis loss, low affinity, etc., and achieve no operation and easy operation. Effect
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Embodiment 1
[0114] Into a stainless steel autoclave with a capacity of 1.5 liters whose interior was fully replaced with nitrogen, 600 mL of a cyclohexane-C4 fraction mixed solution containing 32.4% by weight of 1,3-butadiene (containing 26.4% by weight of cyclohexane in cis -2-butene as the main component of the C4 fraction 39.2% by weight), followed by adding 1.3 mmol of water and 1.9 mmol of diethylaluminum monochloride for stirring, and adding 5.1 mmol of cyclooctadiene. The autoclave was heated up, and when the internal temperature reached 60°C, 0.005 mmol of cobalt octoate was added, and polymerization was carried out at 60°C for 25 minutes. After the polymerization reaction, 430 mmol of modifier 1,3-dimethoxybenzene (DMOB) was added, and the temperature of the autoclave was raised. When the internal temperature reached 70°C, 3.8 mmol of tertiary butyl chloride was added to react for 60 minutes. An anti-aging agent was added thereto, and vacuum drying was performed at 80°C for 3 ho...
Embodiment 2
[0116] Into a stainless steel autoclave with a capacity of 1.5 liters whose interior was fully replaced with nitrogen, 500 mL of a mixed solution of cyclohexane-C4 fraction containing 30.3% by weight of 1,3-butadiene (containing 37.3% by weight of cyclohexane in cis -2-butene as the main component of the C4 fraction 31.2% by weight), followed by adding 1.1 mmol of water and 1.6 mmol of diethylaluminum monochloride for stirring, and adding 7.3 mmol of cyclooctadiene. The autoclave was heated up, and when the internal temperature reached 60°C, 0.003 mmol of cobalt octoate was added, and polymerization was carried out at 60°C for 25 minutes. After the polymerization reaction, 9.1 mmol of modifier 1,3-dimethoxybenzene (DMOB) was added, and the temperature of the autoclave was raised to 70° C. at the inner temperature. Then, 15.8 mmol of tertiary butyl chloride was added and reacted for 15 minutes. After adding the antiaging agent, the polymer was precipitated with ethanol, and va...
Embodiment 3
[0118] Into a stainless steel autoclave with a capacity of 1.5 liters whose interior was fully replaced with nitrogen, 500 mL of a mixed solution of cyclohexane-C4 fraction containing 30.3% by weight of 1,3-butadiene (containing 37.3% by weight of cyclohexane in cis -2-butene as the main component of the C4 fraction 31.2% by weight), followed by adding 1.1 mmol of water and 1.6 mmol of diethylaluminum monochloride for stirring, and adding 4.5 mmol of cyclooctadiene. The autoclave was heated up, and when the internal temperature reached 60°C, 0.003 mmol of cobalt octylate was added, and polymerization was carried out at 60°C for 25 minutes. After the polymerization reaction, 9.0 mmol of modifier 1,3-dimethoxybenzene (DMOB) was added, and the temperature was raised to 80°C. Then, 3.3 mmol of tertiary butyl chloride was added and reacted for 15 minutes. After adding an antiaging agent, the polymer was precipitated with ethanol, and it vacuum-dried at 80 degreeC for 3 hours. Tab...
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