Modified conjugated diene-based polymer and a tire rubber composition using the same

A technology of conjugated dienes and polymers, which can be used in special tires, tire parts, transportation and packaging, etc., and can solve problems such as difficulty in use

Active Publication Date: 2017-08-01
한화토탈에너지스주식회사
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This technology has the effect of increasing the rate of terminal modification. On the contrary, it m

Method used

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  • Modified conjugated diene-based polymer and a tire rubber composition using the same
  • Modified conjugated diene-based polymer and a tire rubber composition using the same
  • Modified conjugated diene-based polymer and a tire rubber composition using the same

Examples

Experimental program
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Example Embodiment

[0062] Example 1

[0063] 1) Manufacturing of linear SBR

[0064] Put 170g of styrene, 630g of 1,3-butadiene, and 4150g of hexane into a 10L autoclave reactor. After adding 10ml of tetramethylethylenediamine (TMEDA), the temperature of the reactor is raised while rotating with a stirrer To 50°C. The DIB-diamion is placed here, and the linear SBR with a weight average molecular weight (Mw) of about 150,000 g / mol is polymerized through a polymerization reaction. After the reaction temperature reached the maximum temperature and 10 minutes passed, 50 g of butadiene was added, and the two ends of the polymer were replaced with butadiene active anions over 5 minutes. Here, the DIB-dianion with the modifier diethoxydimethylsilane (diethoxydimethylsilane) in a molar ratio of 2.2 mol was added, and the reaction was carried out for 10 minutes. Then, ethanol as a reaction terminator was added to stop the polymerization, and 0.2% by weight of I-1076 as an antioxidant was added to the polym...

Example Embodiment

[0069] Example 2

[0070] 1) Manufacturing of linear SBR

[0071] Put 170g of styrene, 630g of 1,3-butadiene, and 4150g of hexane into a 10L autoclave reactor. After adding 10ml of tetramethylethylenediamine (TMEDA), the temperature of the reactor is raised while rotating with a stirrer To 50°C. The DIB-diamion is placed here, and the linear SBR with a weight average molecular weight (Mw) of about 150,000 g / mol is polymerized through a polymerization reaction. After the reaction temperature reached the maximum temperature and 10 minutes passed, 50 g of butadiene was added, and the two ends of the polymer were replaced with butadiene active anions over 5 minutes. Here, the DIB-diamion containing the modifier (3-Cyanopropyl)dimethylchlorosilane ((3-Cyanopropyl)dimethylchlorosilane) was added in a molar ratio of 2.2 mol, and reacted for 10 minutes. Then, ethanol as a reaction terminator was added to stop the polymerization, and 0.2% by weight of I-1076 as an antioxidant was added t...

Example Embodiment

[0076] Example 3

[0077] 1) Manufacturing of linear SBR

[0078] Put 170g of styrene, 630g of 1,3-butadiene, and 4150g of hexane into a 10L autoclave reactor. After adding 10ml of tetramethylethylenediamine (TMEDA), the temperature of the reactor is raised while rotating with a stirrer To 50°C. The DIB-diamion is placed here, and the linear SBR with a weight average molecular weight (Mw) of about 150,000 g / mol is polymerized through a polymerization reaction. After the reaction temperature reached the maximum temperature and 10 minutes passed, 50 g of butadiene was added, and the two ends of the polymer were replaced with butadiene active anions over 5 minutes. The modifier 1-(2-chloroethyl)-2,2,5,5-tetramethyl-1-aza-2,5-disilole was added here in a mole ratio of 2.2 moles DIB-diamion of alkane (1-(2-chloroethyl)-2,2,5,5-tetramethyl-1-aza-2,5-disilacyclopentane), react for 10 minutes. Then, ethanol as a reaction terminator was added to stop the polymerization, and 0.2% by weig...

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Abstract

The invention relates to modified conjugated diene-based polymer and a tire rubber composition using the same. Raw materials of modified conjugated diene-based polymer are provided. Through utilization of anionic polymerization technique in which an amphoteric initiator is effectively used, a rubber composite material is produced by a conjugated diene-based polymer having a combination of a linear structure modified by two special-structured terminals and having good silica compatibility and a branched conjugated diene-based polymer. It is possible to improve the dispersibility of the inorganic substance through increase of affinity with an inorganic filler.

Description

technical field [0001] The present invention relates to a conjugated diene-based polymer having an increased modification rate, which is used to provide sheet processability, low hysteresis loss, and wet slip properties in the manufacture of rubber composite materials using fillers and vulcanizing agents. Raw material for tire tread with excellent balance. Background technique [0002] When using styrene butadiene rubber (SSBR) obtained by solution polymerization, generally a carbanionic organometallic catalyst is used as an initiator. As a characteristic of the polymerization method called anionic polymerization, the molecular weight and molecular weight distribution Needless to say, not only the micro-structure of the polymer can be adjusted, but also the macro-structure can be adjusted. When used in tire treads, it can be designed to improve braking performance on wet roads. And rubber raw materials with improved fuel ratio. [0003] In USP 7915349 B2, USP 8426513 B2, U...

Claims

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Application Information

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IPC IPC(8): C08L9/06C08L91/00C08K13/02C08K3/22C08K3/36C08K5/09C08F236/10C08F212/08C08F4/48C08C19/25B60C1/00
CPCB60C1/0016C08C19/25C08F236/10C08L9/06C08L2205/025C08L2205/03C08L91/00C08K13/02C08K2003/2296C08K3/36C08K5/09C08F212/08C08F4/48
Inventor 郑镇成李度勋崔准杰金冏河
Owner 한화토탈에너지스주식회사
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