Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A production process of modified conjugated diene-based polymer and a rubber composition using the polymer prepared by this process

A manufacturing method and technology of copolymers, which are applied in transportation and packaging, special tires, tire parts, etc., can solve the problems of difficult to achieve branched structure, difficult to adjust polymer microstructure, and difficult to adjust content.

Active Publication Date: 2017-07-28
한화토탈에너지스주식회사
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In USP 8278395 B2 and KR20045225 B1, a modifier having a polyvalent glycidyl functional group for terminal modification is also added to a conjugated diene polymer that is initiated and polymerized by an organometallic catalyst such as butyllithium. Molecules are produced by introducing modified conjugated diene polymers with such functional groups into inorganic additives such as silica to improve compatibility and dispersibility, but when coupling active linear polymers , it is difficult to achieve a branched structure with a valence of more than 3, and it is not easy to adjust the content, so it is difficult to adjust the fine structure of the polymer
For such reasons, there is a limit to effectively improving physical properties.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A production process of modified conjugated diene-based polymer and a rubber composition using the polymer prepared by this process
  • A production process of modified conjugated diene-based polymer and a rubber composition using the polymer prepared by this process
  • A production process of modified conjugated diene-based polymer and a rubber composition using the polymer prepared by this process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] 1) Manufacturing of linear SBR

[0067] 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. Here, butyl lithium (BuLi) is placed, and a 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 final end of the polymer was replaced with a butadiene active anion over 5 minutes. After that, ethanol was added as a reaction terminator to stop the polymerization, and 0.2% by weight of I-1076 as an antioxidant was added to the polymer to prepare a linear SBR solution.

[0068] 2) Manufacturing of dendritic SBR

[0069] Put 170g of styrene, 630g of 1,3-butadiene, and 4150g of hexane into a 10L autoclave reactor. Aft...

Embodiment 2

[0073] 1) Manufacturing of linear SBR

[0074] 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. Here, butyl lithium (BuLi) is placed, and a 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 final end of the polymer was replaced with a butadiene active anion over 5 minutes. Here, 1.2 moles of fluorobutyl lithium (BuLi) containing the modifier diethoxydimethylsilane was added in a molar ratio of 1.2 moles, and reacted for 10 minutes. After that, ethanol was added as a reaction terminator to stop the polymerization, and 0.2% by weight of I-1076 as an antioxidant was added to the polymer to prepare an SBR ...

Embodiment 3

[0080] 1) Manufacturing of linear SBR

[0081] 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. Here, butyl lithium (BuLi) is placed, and a 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 final end of the polymer was replaced with a butadiene active anion over 5 minutes. Here, 1.2 moles of butyl lithium (BuLi) containing the modifier (3-Cyanopropyl)dimethylchlorosilane ((3-Cyanopropyl)dimethylchlorosilane) was added in a molar ratio of 1.2 moles, and reacted for 10 minutes. After that, ethanol was added as a reaction terminator to stop the polymerization, and 0.2% by weight of terminating I-1076 as a...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The present invention relates to conjugated diene-based polymer which effectively utilizes solution blending and is used for providing tread raw materials which not only improve storage stability of the products and compatibility with inorganic fillers, but also have sheet workability, low hysteresis loss, and slippage resistance good during rubber composite material production utilizing fillers and vulcanizing agents. More specifically, production of the conjugated diene-based polymer by combining a linear structure the tail end of which is modified into functional groups having good silica mixing performance and dendritic conjugated diene-based macromolecular by utilizing a specific structure and an anionic polymerization technique, low-temperature fluidity during product production can be controlled so as to endow the products with storage stability.

Description

Technical field [0001] The present invention relates to a multi-modal (multi-modal) conjugated diene polymer, which not only increases the storage stability of products and the compatibility with inorganic fillers, but also provides a rubber compound using fillers and vulcanizing agents. A raw material for tire treads (tread) with excellent sheet processability, low hysteresis loss, and wet-slip properties at the time of material production. Background technique [0002] Recently, with increasing interest in environmentally friendly raw materials and energy-saving raw materials, modified conjugated diene-based polymer materials with functional chemical substances incorporated into diene-based polymers have been used in various applications. Various uses. In particular, there is an increasing demand for the development of raw material technologies that apply such modified conjugated diene polymers to automobile tires to improve braking performance and fuel ratio on wet roads. As...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C08L15/00C08L9/06C08F236/10C08F212/08C08C19/44B60C1/00
CPCB60C1/0016C08C19/44C08F236/10C08L15/00C08L2205/02C08F212/08C08L9/06
Inventor 崔准杰李度勋郑镇成金冏河
Owner 한화토탈에너지스주식회사
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com