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

Preparation method of high trans-1,4-isoprene-butadiene copolymer

A technology of isoprene and copolymer, applied in the field of polymer synthesis, can solve the problems of discharge, difficult to dissipate heat, difficult materials, etc.

Inactive Publication Date: 2018-10-02
QINGDAO UNIV OF SCI & TECH
View PDF0 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The catalyst efficiency and orientation of the solution polymerization are not high, the viscosity of the synthesized glue is very high, it is difficult to discharge the material from the reaction vessel, and the production process is complicated, requiring post-processing, resulting in high cost, which is not conducive to large-scale industrial production
The catalyst efficiency and orientation of bulk polymerization are relatively high, and the cost is relatively low, but there are also many unavoidable shortcomings, such as large stirring power and long polymerization time; it is not easy to dissipate heat, and it is easy to explode, which makes the quality of the product difficult to control ; Residual ash such as Ti, Al and other metal ions will cause aging

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
  • Preparation method of high trans-1,4-isoprene-butadiene copolymer
  • Preparation method of high trans-1,4-isoprene-butadiene copolymer
  • Preparation method of high trans-1,4-isoprene-butadiene copolymer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Clean the 30mL polymerization tube, dry it, evacuate it and replace it with high-purity nitrogen several times to ensure that the polymerization tube is free of water and oxygen. After the polymerization tube is cooled to room temperature, isoprene, butadiene, n-hexane, organic aluminum and supported titanium catalyst are added in sequence, wherein the feed ratio of butadiene to isoprene is 5:95 (molar ratio), Al / Ti=50 (molar ratio), Ti / Ip=3×10 -4 (molar ratio), the monomer concentration is 4mol / L, pre-polymerized in an ice bath at 0°C for 30min, then transferred to a water bath at 60°C to continue polymerization for 6h, and finally terminated with an ethanol solution containing anti-aging agent 264 (1% by mass) Reaction, the product is taken out and washed repeatedly with ethanol solution, and the copolymerized product is obtained after vacuum drying.

Embodiment 2

[0034] Example 2 adopts the same experimental procedure as that of Example 1, except that the feed ratio of butadiene and isoprene is set at 10:90 (molar ratio).

Embodiment 3

[0036] Example 3 adopts the same experimental procedure as that of Example 1, except that the feed ratio of butadiene and isoprene is set at 15:85 (molar ratio).

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 invention discloses a preparation method of a high trans-1,4-isoprene-butadiene copolymer. By adopting a solution slurry method, isoprene and butadiene are catalyzed to be polymerized by a supported titanium catalyst and further the high trans-1,4-isoprene-butadiene copolymer is synthesized. The copolymer consists of an isoprene unit with the mole fraction of 42.8 to 89.9 percent and a butadiene unit with the mole fraction of 10.1 to 57.2 percent; the mole contents of trans-1,4-configurations of the isoprene unit and the butadiene unit are both greater than 97 percent. Compared with high trans-1,4-polyisoprene and high trans-1,4-polybutadiene, the copolymer as a novel trans-1,4-polydiolefin has the advantage that processing and blending properties are remarkably improved; meanwhile, the copolymer has excellent dynamic properties such as small rolling resistance, good flexural fatigue resistance and low dynamic heat build-up and provides an ideal sizing material for high-performancegreen tires.

Description

technical field [0001] The invention belongs to the technical field of polymer synthesis, in particular to a method for preparing a high trans-1,4-isoprene-butadiene copolymer and a high trans-1,4-isoprene prepared by the method ene-butadiene copolymers. Background technique [0002] Due to its special structure and properties, high trans-1,4-diene polymer occupies a special position in the spectrum of rubber-plastic materials. Compared with cis-1,4-structured polymers, it has Relatively strong crystallization ability, it behaves as a hard material with high hardness at room temperature, so the processing and blending properties are poor. After long-term practice, relevant researchers have summed up the ideal model of low rolling resistance, high wear resistance, high fatigue resistance and environmental friendliness. Recently, high trans-1,4-diene polymers have attracted more and more attention from the industry because of their excellent dynamic properties, such as excel...

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): C08F236/08C08F236/06C08F4/642
CPCC08F236/08C08F236/06C08F4/642
Inventor 贺继东魏萌萌张伟
Owner QINGDAO UNIV OF SCI & TECH
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