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Modifier, method for preparing same, and modified conjugated diene-based polymer comprising same

A modifier, alkenyl technology, applied in the field of modified conjugated diene polymers, can solve the problems of insufficient effect, low affinity, poor dispersibility, etc., and achieve improved mixing performance, excellent tensile strength, and good processing performance. Effect

Active Publication Date: 2019-05-21
LG CHEM LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since silica having a hydrophilic surface has low affinity with rubber compared to carbon black having a hydrophobic surface, dispersibility will be poor, and therefore, a separate silane coupling agent is required to improve dispersibility or provide Coupling between silica and rubber
Therefore, a method of introducing a functional group having affinity or reactivity with silica into the terminal of the rubber molecule is underway, but its effect is insufficient

Method used

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  • Modifier, method for preparing same, and modified conjugated diene-based polymer comprising same
  • Modifier, method for preparing same, and modified conjugated diene-based polymer comprising same
  • Modifier, method for preparing same, and modified conjugated diene-based polymer comprising same

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preparation example Construction

[0101] The production method according to one embodiment of the present invention is characterized in that it includes: reacting a compound represented by the following formula 2 with a compound represented by the following formula 3 (method 1); or making a compound represented by the following formula 2 A compound represented by Formula 3 below is reacted, and a compound represented by Formula 4 below and a basic compound are added and reacted (Method 2).

[0102] [Formula 2]

[0103]

[0104] [Formula 3]

[0105]

[0106] [Formula 4]

[0107] R 2 -Y

[0108] In formula 2 to formula 4, R 1 to R 5 And the definitions of A and B are the same as defined in formula 1, Y is CN, Cl, F or Br.

[0109] In other words, the preparation method of the modifying agent according to one embodiment of the present invention may be performed by method 1 or method 2 according to the desired modifying agent.

[0110] The compound represented by Formula 2 may be, for example, a compo...

preparation Embodiment 1

[0218] Preparation Example 1: Preparation of modifier represented by formula i

[0219]To a 1 L round bottom flask connected with a Schlenk line, 0.1 mol (13.92 g) of the compound represented by Formula 2-1 was added, the pressure was reduced and moisture was completely removed. Then, under an argon atmosphere, 500 ml of dichloromethane was added and 0.095 mol (40.44 g) of the compound represented by Formula 3-1 was added, followed by stirring and reacting at room temperature for 4 hours. Then, 0.12 mol (13.04 g) of the compound represented by formula 4-1 and 0.15 mol (15.18 g) of triethylamine were added thereto at low temperature, and stirred at room temperature for 24 hours to prepare the modified compound represented by formula i sex agent. After that, low-boiling point by-products and unreacted substances were removed using a rotary evaporator, and extraction was performed with hexane / acetonitrile to obtain an isolated modifier represented by formula i. observe 1 H and...

preparation Embodiment 2

[0230] Preparation Example 2: Preparation of modifier represented by formula (ii)

[0231] 0.1 mol (12.30 g) of the compound represented by Formula 2-2 was added to a 1 L round bottom flask connected with a Schreck line, the pressure was reduced and moisture was completely removed. Then, under an argon atmosphere, 500 ml of dichloromethane was added and 0.095 mol (40.44 g) of the compound represented by Formula 3-1 was added, followed by stirring and reacting at room temperature for 4 hours. Then, 0.12 mol (13.04 g) of the compound represented by formula 4-1 and 0.15 mol (15.18 g) of triethylamine were added thereto at low temperature, and stirred at room temperature for 24 hours to prepare the compound represented by formula (ii) modifiers. After that, low-boiling point by-products and unreacted substances were removed using a rotary evaporator, and extraction was performed with hexane / acetonitrile to obtain an isolated modifier represented by formula (ii). observe 1 H and...

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Abstract

The present invention relates to a modifier useful for the modification of a conjugated diene-based polymer, having excellent affinity with a filler, and capable of improving the compounding properties of a conjugated diene-based polymer, a method for preparing the same, a modified conjugated diene-based polymer including the modifier, and a method for preparing the polymer.

Description

technical field [0001] [Cross Reference to Related Application] [0002] This application claims the benefit of priority based on Korean Patent Application No. 10-2017-0097188 filed on July 31, 2017, the entire contents of which are incorporated herein by reference. [technical field] [0003] The present invention relates to a modifier for modification of a conjugated diene polymer, a preparation method thereof, a modified conjugated diene polymer containing the modifier, and a preparation method of the polymer , the modifier has excellent affinity with the filler and can improve the mixing performance of the conjugated diene polymer. Background technique [0004] According to the recent demand for automobiles with low fuel consumption, modified 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 a rubber material for tires. [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K5/544C08K5/548C08K5/5415C08F236/10C08F2/38C08F4/46C08F4/48C07F7/18
CPCC07F7/18C08F2/38C08F4/46C08F4/48C08K5/5415C08K5/544C08K5/548C08F236/10C08K3/36C08L9/06C08F4/463C07F7/1804C07F7/1892C08K5/5445C08K5/5419C08C19/22C08C19/25C08F2810/40
Inventor 文珉植蔡多元李好永
Owner LG CHEM LTD
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