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Organolithium compound, method for production of modified conjugated diene-based polymer using same, and modified conjugated diene-based polymer

A conjugated diene, organolithium technology, applied in the direction of lithium organic compounds, organic chemistry, rolling resistance optimization, etc., can solve problems such as insufficient effect, and achieve the effect of excellent affinity, good processability, and low rolling resistance

Active Publication Date: 2018-01-19
LG CHEM LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] For this reason, studies on the preparation method of modified conjugated diene-based polymers have been conducted in, for example, WO2005-097845A1, but their effects are insufficient

Method used

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  • Organolithium compound, method for production of modified conjugated diene-based polymer using same, and modified conjugated diene-based polymer
  • Organolithium compound, method for production of modified conjugated diene-based polymer using same, and modified conjugated diene-based polymer
  • Organolithium compound, method for production of modified conjugated diene-based polymer using same, and modified conjugated diene-based polymer

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preparation example Construction

[0073] A production method according to one embodiment of the present invention includes polymerizing a conjugated diene-based monomer in a hydrocarbon solvent in the presence of an organolithium compound represented by the following formula 1, or making the conjugated diene-based monomer and a step of polymerizing an aromatic vinyl-based monomer (step A).

[0074] [Formula 1]

[0075]

[0076] In formula 1,

[0077] R 1 , R 2 and R 5 each independently being a monovalent hydrocarbon group having 1 to 10 carbon atoms,

[0078] R 3 and R 4 are each independently a divalent hydrocarbon group having 1 to 10 carbon atoms, and,

[0079] n is an integer of 1 to 5.

[0080] In particular, specific examples of the organolithium compound represented by Formula 1 may be the same as described above.

[0081] Step A is a step of preparing a living polymer, wherein a functional group derived from the organolithium compound represented by the above formula 1 is bonded to at leas...

Embodiment

[0125] 270 g of styrene, 710 g of 1,3-butadiene, 5000 g of n-hexane, and 1.3 g of 2,2-bis(2-oxolyl)propane as a polar additive were added to a 20 L high-pressure In the still reactor, the temperature inside the reactor was then raised to 40°C. When the temperature in the reactor reached 40° C., 0.4 mmol of the organolithium compound of Formula 2 prepared in Preparation Example was injected into the reactor, followed by an adiabatic heating reaction. After about 20 minutes, 20 g of 1,3-butadiene were added. After 5 minutes, 0.7 g of bis-(3-triethoxymethylsilylpropyl)-N-methylamine was injected, and the reaction was allowed to proceed for 15 minutes. Then, the polymerization reaction was terminated using ethanol, and 5 mL of 0.3% by weight of butylated benzyl alcohol (BHT) as an antioxidant dissolved in hexane was added thereto. The polymer thus obtained was poured into hot water heated with steam and stirred to remove the solvent, and then tumbled to remove the remaining solv...

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Abstract

The present invention relates to an organolithium compound, a method for the production of a modified conjugated diene-based polymer using the same, and a modified conjugated diene-based polymer. Thepresent invention can provide a modified conjugated diene-based polymer having excellent compatibility with an inorganic filler and improved processability, and can provide a tire having excellent exothermic properties, tensile strength, abrasion resistance, low-fuel efficiency, and wet skid resistance, while having low rolling resistance, by using a rubber composition containing the modified conjugated diene-based polymer.

Description

technical field [0001] [Cross Reference to Related Application] [0002] This application claims the benefit of priority from Korean Patent Application No. 10-2015-0153294 filed on November 2, 2015, the entire contents of which are incorporated herein by reference. [technical field] [0003] The present invention relates to an organolithium compound, a method of producing a modified conjugated diene-based polymer using the organolithium compound, and a modified conjugated diene-based polymer. Background technique [0004] With regard to the latest trends in the automotive industry, durability and reduced fuel consumption are constant needs, and efforts are being made to meet them. In particular, much effort has been made to enhance the physical properties of rubber as a material for vehicle tires, especially tire treads that come into direct contact with the ground. Although tire treads generally use inorganic fillers and the like in combination with conjugated diene-bas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F1/02C07C211/09C08F210/18C08F212/08C08F2/04B60C1/00
CPCC07C211/09C07F1/02C08F210/18C08F2/04C08F212/08C08C19/22C08C19/44C08F236/06C08L9/00B60C1/00Y02T10/86B60C1/0016C08F2500/21C08K5/56C08L9/06
Inventor 李好永金鲁马文珉植
Owner LG CHEM LTD
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