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Method for preparing high vinyl solution polymerized butylbenzene by high temperature continuous polymerization technique

A polymerization process and high vinyl technology, which is applied in the high-temperature continuous polymerization process to prepare high vinyl solution-polymerized styrene-butadiene. It can solve the problems of no application reports and no actual research results on regulators, and achieve high activity.

Inactive Publication Date: 2009-03-18
DALIAN MARITIME UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, under high-temperature polymerization conditions, there are no actual research results on the effects of these regulators, and there are no application reports in the SSBR continuous polymerization process.

Method used

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  • Method for preparing high vinyl solution polymerized butylbenzene by high temperature continuous polymerization technique
  • Method for preparing high vinyl solution polymerized butylbenzene by high temperature continuous polymerization technique
  • Method for preparing high vinyl solution polymerized butylbenzene by high temperature continuous polymerization technique

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] On the four-tank series continuous polymerization model test device, replace it with high-purity nitrogen for 3 times, turn on the stirring, and add solvent, butadiene, styrene, polar additive THF, and initiator n-butyl with a metering pump under the protection of high-purity nitrogen. lithium. The polymerization temperature is 110°C. When the polymerization reaches a steady state and the outlet molecular weight reaches the set value, the terminator isopropanol and antioxidant BH are added to terminate the reaction. The SSBR glue was condensed and dried by water vapor, and its microstructure test results are shown in Table 1.

[0026] Table 1 Effect of THF on the microstructure of SSBR

[0027]

Embodiment 2

[0029] Same example 1, difference is to add polar additive diethylene glycol diethyl ether. The results of the microstructure test are shown in Table 2.

[0030] Table 2 Effect of diethylene glycol diethyl ether on the microstructure of SSBR

[0031]

Embodiment 3

[0033] Same as example 1, the difference is to add polar additive 1G / GSA. The results of the microstructure test are shown in Table 3.

[0034] Table 3 Effect of 1G / GSA on the microstructure of SSBR

[0035]

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PUM

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Abstract

The invention discloses a method for preparing high-vinyl solution styrene butadiene through a high-temperature continuous polymerization process. Butyl lithium is taken as an initiator of anionic polymerization, an alkyl tetrahydrofurfuryl ether is taken as a polarity regulator, and the continuous polymerization process is adopted to synthesize high-vinyl solution butadiene styrene at a polymerization temperature of between 100 and 130 DEG C. The vinyl content can reach more than 30 percent, thereby meeting the practical production requirements. The method has the advantages that the alkyl tetrahydrofurfuryl ether is taken as the anion regulator for the homopolymerization of alkadiene or the copolymerization of alkadiene and other olefins; under the condition of the high-temperature continuous polymerization, higher activity is still maintained so as to effectively regulate the vinyl content in the alkadiene.

Description

technical field [0001] The invention belongs to the technical field of diene anion polymerization. It relates to the synthesis of solution-polymerized styrene-butadiene rubber, especially the method for preparing high-vinyl solution-polymerized styrene-butadiene rubber by high-temperature continuous polymerization process. Background technique [0002] Styrene-butadiene rubber is the most widely used and most produced variety of synthetic rubber in the world. It is mainly used for tires, shoes, rubber hoses and so on. Styrene butadiene rubber is mainly divided into solution polystyrene butadiene rubber (SSBR) and emulsion polystyrene butadiene rubber (ESBR). Compared with ESBR, SSBR has the characteristics of low rolling resistance, good wet skid resistance and wear resistance, and achieves a good balance between the three, which can meet the basic requirements of the modern automobile industry for tire performance: high speed, safety, comfort and energy saving , thus, it ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F236/10C08F4/48C08F2/06
Inventor 廖明义陶晓伟
Owner DALIAN MARITIME UNIVERSITY
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