1,3-conjugated diene/monovinylarene copolymer and its continuous polymerization production method
A technology of monovinylarene and conjugated diene, which is applied in the production field of 1,3-conjugated diene/monovinylarene copolymer and its continuous polymerization, and can solve the problems of high Mooney viscosity and monomer conversion rate Low continuous production efficiency, extended residence time and other issues, to achieve the effect of high Mooney viscosity
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Embodiment 1
[0041] The continuous polymerization process was adopted in the experiment, and the reaction was carried out in two 5-liter polymerization reactors connected in series. Under the protective atmosphere of high-purity nitrogen, the pressure in the polymerization kettle is controlled at 0.7Mpa (gauge pressure), and 700g of cyclohexane and normal hexane (cyclohexane and normal hexane, weight ratio is 88:12) are added to the first kettle, and the After the jacket is warmed up to 100°C, continuously add cyclohexane and n-hexane mixed solvent and monomer in the aforementioned weight ratio of 25°C to the first kettle, and the feed rate of various reaction materials is: mixed solvent (cyclohexane and n-hexane alkanes, the weight ratio is 88:12) 3538g / h, 1,3-butadiene 669g / h, styrene 329g / h, ethyl tetrahydrofurfuryl ether 1.810g / h, n-butyllithium 0.2201g / h and 1,2-butadiene 0.2495g / h. The reaction pressure of each polymerization tank is 0.6-0.8Mpa, the reaction temperature is 125°C, an...
Embodiment 2
[0043] Using the same experimental conditions as in Example 1, the only difference is that the amount of n-butyllithium added is 0.2661g / h, and the data of the measured samples are shown in Table 1 and Table 2.
Embodiment 3
[0045] Using the same experimental conditions as in Example 1, the only difference is that the amount of 1,2-butadiene added is 0.1996 g / h. The measured data of the samples are shown in Table 1 and Table 2.
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