Modified conjugated diene polymer and tire rubber composition using 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: 2019-10-01
HANWHA TOTAL ENERGIES PETROCHEMICAL CO LTD
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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 may cause a gelation reaction during the coupling reaction, and it is difficult to use it commercially.

Method used

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  • Modified conjugated diene polymer and tire rubber composition using same
  • Modified conjugated diene polymer and tire rubber composition using same
  • Modified conjugated diene polymer and tire rubber composition using same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] 1) Manufacture of linear SBR

[0064] Put 170g of styrene, 630g of 1,3-butadiene, and 4150g of hexane into a 10L autoclave reactor, add 10ml of tetramethylethylenediamine (TMEDA), and raise the temperature of the reactor while rotating it with a stirrer to 50°C. DIB-diamion is placed here, and through polymerization reaction, linear SBR with a weight average molecular weight (Mw) of about 150,000 g / mol is polymerized. After 10 minutes had elapsed since the reaction temperature reached the highest temperature, 50 g of butadiene was charged, and both ends of the polymer were replaced with butadiene active anions over 5 minutes. Here, DIB-dianion containing modifier diethoxydimethylsilane (diethoxydimethylsilane) was charged at a molar ratio of 2.2 moles, and reacted for 10 minutes. Then, ethanol was added as a reaction terminator to terminate the polymerization, and 0.2 wt% of I-1076 was added as an antioxidant to the polymer to prepare a linear SBR solution.

[0065] ...

Embodiment 2

[0070] 1) Manufacture of linear SBR

[0071] Put 170g of styrene, 630g of 1,3-butadiene, and 4150g of hexane into a 10L autoclave reactor, add 10ml of tetramethylethylenediamine (TMEDA), and raise the temperature of the reactor while rotating it with a stirrer to 50°C. DIB-diamion is placed here, and through polymerization reaction, linear SBR with a weight average molecular weight (Mw) of about 150,000 g / mol is polymerized. After 10 minutes had elapsed since the reaction temperature reached the highest temperature, 50 g of butadiene was charged, and both ends of the polymer were replaced with butadiene active anions over 5 minutes. Here, DIB-diamion containing a modifying agent (3-cyanopropyl)dimethylchlorosilane ((3-Cyanopropyl)dimethylchlorosilane) was charged at a molar ratio of 2.2 moles, and reacted for 10 minutes. Then, ethanol was added as a reaction terminator to terminate the polymerization, and 0.2 wt% of I-1076 was added as an antioxidant to the polymer to prepare ...

Embodiment 3

[0077] 1) Manufacture of linear SBR

[0078] Put 170g of styrene, 630g of 1,3-butadiene, and 4150g of hexane into a 10L autoclave reactor, add 10ml of tetramethylethylenediamine (TMEDA), and raise the temperature of the reactor while rotating it with a stirrer to 50°C. DIB-diamion is placed here, and through polymerization reaction, linear SBR with a weight average molecular weight (Mw) of about 150,000 g / mol is polymerized. After 10 minutes had elapsed since the reaction temperature reached the highest temperature, 50 g of butadiene was charged, and both ends of the polymer were replaced with butadiene active anions over 5 minutes. Here, the modifier 1-(2-chloroethyl)-2,2,5,5-tetramethyl-1-aza-2,5-disilacyclopentyl was added with a molar ratio of 2.2 moles DIB-diamion of alkane (1-(2-chloroethyl)-2,2,5,5-tetramethyl-1-aza-2,5-disilacyclopentane), reacted for 10 minutes. Then, ethanol was added as a reaction terminator to terminate the polymerization, and 0.2 wt% of I-1076 ...

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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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Patent Type & Authority Patents(China)
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 HANWHA TOTAL ENERGIES PETROCHEMICAL CO LTD
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