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Modified conjugated diene-based polymer and method for preparing same

一种改性剂、化合物的技术，应用在所述聚合物的制备领域，能够解决轮胎物理性能的改善效果不显著、低末端改性比等问题，达到改善燃料消耗率、高改性比、亲和性提高的效果

Active Publication Date: 2020-05-08
LG CHEM LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] However, BR or SBR modified by the above method has a low terminal modification ratio, and the effect of improving the physical properties of tires manufactured using it is not significant

Method used

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  • Modified conjugated diene-based polymer and method for preparing same
  • Modified conjugated diene-based polymer and method for preparing same
  • Modified conjugated diene-based polymer and method for preparing same

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Experimental program
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preparation example Construction

[0089] The production method according to one embodiment of the present invention is characterized in comprising: performing a first reaction between a compound represented by the following formula 4 and a compound represented by the following formula 5 to prepare a compound represented by the following formula 6 (step a ); and carry out the second reaction (step b) between the compound represented by the following formula 6 and the compound represented by the following formula 7:

[0090] [Formula 4]

[0091] h 2 N-R 4 -NH 2

[0092] [Formula 5]

[0093]

[0094] [Formula 6]

[0095]

[0096] [Formula 7]

[0097] R 9 R 10 R 11 SiCl

[0098] [Formula 1]

[0099]

[0100] In formula 1,

[0101] R 1 Yes - COOR 8 ,

[0102] R 2 and R 6 each independently being a divalent hydrocarbon group of 2 to 20 carbon atoms,

[0103] R 3 and R 5 Each independently is -SiR 9 R 10 R 11 ,

[0104] R 4 It is a divalent hydrocarbon group of 1 to 20 carbon atoms, ...

preparation Embodiment 1

[0257] 1) Preparation of compounds represented by formula 2-1

[0258] To a 1 L round bottom flask, 46.5 g (400 mmol) of hexamethylenediamine and 88.2 g (880 mmol, 2.2 equivalents) of ethyl acrylate were slowly added. Then, a reaction was performed by stirring at room temperature for 12 hours. After checking the complete consumption of hexamethylenediamine, the reaction was terminated and the solvent was removed under reduced pressure. After that, the resulting product was filtered through a celite pad using 500 ml of n-hexane and concentrated to obtain 120.2 g (95% yield) of a compound represented by the following formula 2-1. The thus obtained compound represented by formula 2-1 1 H NMR spectral data are as follows.

[0259] [Formula 2-1]

[0260]

[0261] 1 H-NMR (500MHz, CDCl 3 )4.14(4H,q),2.86(4H,t),2.67(2H,td,J=7.0Hz,3.5Hz),2.59(2H,t),2.50(2H,t),1.50(4H,m) ,1.33(4H,m),1.25(3H,t)

[0262] 2) Preparation of compounds represented by formula 2

[0263] Into a 2L ...

preparation Embodiment 2

[0268] 1) Preparation of compounds represented by formula 3-1

[0269] To a 1 L round bottom flask, 29.6 g (400 mmol) of 1,3-diaminopropane and 88.2 g (880 mmol, 2.2 equivalents) of ethyl acrylate were slowly added. Then, a reaction was performed by stirring at room temperature for 12 hours. After checking the complete consumption of 1,3-diaminopropane, the reaction was terminated and the solvent was removed under reduced pressure. After that, the resulting product was filtered through a celite pad using 500 ml of n-hexane and concentrated to obtain 104.2 g (95% yield) of a compound represented by the following Formula 3-1. The thus obtained compound represented by formula 3-1 1 H NMR spectral data are as follows.

[0270] [Formula 3-1]

[0271]

[0272] 1 H-NMR (500MHz, CDCl 3 )4.14(4H,q),2.86(4H,t),2.59(4H,t),2.50(4H,t),1.50(2H,m),1.25(6H,t)

[0273] 2) Preparation of compounds represented by formula 3

[0274] Into a 2L round bottom flask was added 120.2g (380mmo...

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Abstract

The present invention relates to a modifier represented by chemical formula 1, to a method for preparing the same, to a modified conjugated diene-based polymer with a high percentage of modification,the polymer comprising a functional group derived from the modifier, and to a method for preparing the polymer.

Description

technical field [0001] Cross References to Related Applications [0002] This application claims the benefit of priority based on Korean Patent Application No. 10-2017-0136711 filed on October 20, 2017, the entire contents of which are incorporated herein by reference. [0003] The present invention relates to a modifier having a specific structure, a method for preparing the modifier, a modified conjugated diene polymer having a high modification ratio containing functional groups derived from the modifier, and the Polymer preparation methods. Background technique [0004] According to the recent demand for automobiles with low fuel consumption, conjugated diene-based polymers having modulation stability represented by wet skid resistance and low rolling resistance and excellent abrasion resistance and tensile properties are required as tires Made of rubber material. [0005] In order to reduce rolling resistance of tires, there is a method of reducing hysteresis loss o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K5/44C08F36/04C08F2/38C08F4/54
CPCC08F2/38C08F4/54C08K5/44C08C19/22C08C19/25C08C19/44C08F136/06C08L15/00C07C229/16C07F7/10C08F4/545C08L91/00C08K3/04C08K3/22C08K5/09C08K3/06C08K5/31C08K5/47C08K5/3437C08F36/04C08F8/30
Inventor 金智恩李恩京赵大濬崔源文
Owner LG CHEM LTD
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