End-functional conjugated diene-based polymer and manufacturing method therefor

一种共轭二烯、聚合物的技术，应用在制备该聚合物领域，能够解决高滞后损耗、低分散性、效果不够等问题，达到优异相容性的效果

Active Publication Date: 2016-05-25
LG CHEM LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Although conventional tire treads have been formed by mixing conjugated diene-based rubber and inorganic fillers to enhance the above properties, problems of high hysteresis loss or low dispersibility may occur
[0004] Therefore, research on modified polymers having excellent elasticity and thus high fuel-saving performance, as disclosed in Korean Patent Application Publication No. 2003-0060752, has been continuously conducted, but its effects are not sufficient

Method used

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  • End-functional conjugated diene-based polymer and manufacturing method therefor
  • End-functional conjugated diene-based polymer and manufacturing method therefor
  • End-functional conjugated diene-based polymer and manufacturing method therefor

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preparation example Construction

[0078] In the method of preparing an end-functionalized conjugated diene-based polymer according to the present invention, the polymerization in (a) may be performed additionally using a polar additive.

[0079] The polar additive may be a base. Alternatively, the polar additive may be an ether, an amine, or a mixture thereof, or may be selected from tetrahydrofuran, di(tetrahydrofuryl)propane, diethyl ether, cyclopentyl ether, dipropyl ether, ethylene glycol dimethyl ether, ethylene glycol dimethyl ether, Alcohol dimethyl ether, diethylene glycol, dimethyl ether, tert-butoxyethoxyethane bis(2-dimethylaminoethyl) ether, (dimethylaminoethyl) ether, trimethylamine, triethylamine , tripropylamine and tetramethylethylenediamine. Alternatively, the polar additive may be di(tetrahydrofuryl)propane, triethylamine or tetramethylethylenediamine.

[0080] The polar additive may be used in an amount of 0.001 to 50 g, preferably 0.001 to 10 g, more preferably 0.005 to 1 g, and most pref...

Embodiment 1

[0116] In a 20L autoclave reactor, 260g of styrene, 720g of 1,3-butadiene, 5000g of n-hexane and 1.3g of 2,2-bis(2-tetrahydrofuryl)propane as a polar additive were placed, and the reaction The internal temperature of the vessel rose to 40 °C. When the internal temperature of the reactor reached 40° C., 4 mmol of n-butyllithium was placed in the reactor to perform an adiabatic reaction until stable. 20 minutes after the completion of the adiabatic reaction, 20 g of 1,3-butadiene was added, thereby forming a living polymer having a lithium terminal. Then, 0.5 g of 3- or 4-pyrrolidineethylstyrene was added, and the reaction was performed for 30 minutes, thereby capping the living polymer.

[0117] Subsequently, 5 mmol of bis(methyldiethoxysilylpropyl)-N-methylamine was added and the reaction was allowed to proceed for 15 minutes. Thereafter, the polymerization reaction was terminated using ethanol, and 5 ml of a solution in which 0.3 wt % of butylated hydroxytoluene (BHT) as an...

Embodiment 2

[0120] An end-functionalized conjugated diene-based polymer was prepared in the same manner as in Example 1 except that 3- or 4-pyrrolidineethylstyrene was added in an amount of 1 g instead of 0.5 g. The analysis results of the end-functionalized conjugated diene-based polymer thus prepared are shown in Table 1 below.

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Abstract

The present invention relates to an end-functional conjugated diene-based polymer, in which the polymer is represented by formula 1, and a manufacturing method therefor.

Description

technical field [0001] The present invention relates to an end-functionalized conjugated diene-based polymer and a method for preparing the same. More specifically, the present invention relates to an end-functionalized conjugated diene-based A polymer, and a method for preparing the same. Background technique [0002] With increasing demands for stability, durability and fuel economy of vehicles, it is necessary to develop rubber with excellent wet grip, high mechanical strength and low rolling resistance as a material for vehicle tires, especially in contact with roads tire tread material. [0003] Although conventional tire treads have been formed by mixing conjugated diene-based rubber and inorganic fillers to enhance the above properties, problems of high hysteresis loss or low dispersibility may occur. [0004] Therefore, research on a modified polymer having excellent elasticity and thus high fuel-saving performance, as disclosed in Korean Patent Application Public...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08C19/25C08C19/26C08F236/10C08L15/00C08K3/36C08K5/54B60C1/00
CPCB60C1/00C08C19/44C08L9/00C08L9/06C08L15/00C08L91/00C08L91/06C08K3/013C08C19/25C08K3/04C08K3/36C08K5/54C08F236/10C08C19/26C08C19/22C08K5/548C08K3/06C08K3/22C08K5/09C08F8/30
Inventor 李鲁美金唯真金鲁马
Owner LG CHEM LTD
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