Check patentability & draft patents in minutes with Patsnap Eureka AI!

In-chain polarized butadiene-styrene copolymer and preparation method thereof

A technology of styrene copolymer and tert-butoxystyrene, which is applied in the field of polymer chemistry, can solve the problems of introducing functionalized groups, many side reactions, complicated processes, etc. heat effect

Pending Publication Date: 2022-08-05
DALIAN UNIV OF TECH
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the problems of complex process, many side reactions and inability to introduce functional groups in the chain of styrene-butadiene polymer in the prior art, and to provide a kind of very Personalized butadiene-styrene copolymer and preparation method thereof

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
  • In-chain polarized butadiene-styrene copolymer and preparation method thereof
  • In-chain polarized butadiene-styrene copolymer and preparation method thereof
  • In-chain polarized butadiene-styrene copolymer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] In a 2-liter stainless steel reactor with stirring, add 1.2 liters of cyclohexane, 6 ml of tetrahydrofuran, 75 grams of butadiene, 20 grams of styrene, and 5 grams of p-tert-butoxystyrene, turn on the stirring, and heat up to 30 ℃, inject the cyclohexane solution of n-butyllithium with a syringe, and the dosage of butyllithium is 1×10 -3 After 90 minutes of polymerization, water was added to terminate the reaction, the polymer was precipitated with absolute ethanol, and dried to constant weight to obtain a polarized butadiene-styrene copolymer containing p-tert-butoxyphenyl in the chain.

[0031] Using nuclear magnetic resonance spectrometer ( 1H-NMR) to analyze and test the composition of the copolymer, the mass percentage of the combined butadiene content is 75.2%, the combined mass percentage of the styrene content is 19.9%, and the combined mass percentage of the p-tert-butoxystyrene content is 4.9%; The microstructure of the copolymer was analyzed and tested by an...

Embodiment 2

[0033] In a 2 liter stainless steel reactor with stirring, add 1.2 liters of cyclohexane, 1 ml of ditetrahydrofurfuryl propane (DTHFP), 75 grams of butadiene, 15 grams of styrene, and 10 grams of p-tert-butoxystyrene , turn on stirring, raise the temperature to 30°C, inject the cyclohexane solution of n-butyllithium with a syringe, and the dosage of butyllithium is 1×10 -3 After 90 minutes of polymerization, water was added to terminate the reaction, the polymer was precipitated with absolute ethanol, and dried to constant weight to obtain a polarized butadiene-styrene copolymer containing p-tert-butoxyphenyl in the chain.

[0034] Using nuclear magnetic resonance spectrometer ( 1 H-NMR) to analyze and test the composition of the copolymer, the mass percentage of the combined butadiene content is 75.3%, the combined mass percentage of the styrene content is 14.9%, and the combined mass percentage of the ethylene oxide content is 9.8%; The microstructure of the copolymer was a...

Embodiment 3

[0036] In a 2-liter stainless steel reactor with stirring, add 1.2 liters of cyclohexane, 1 ml of ditetrahydrofurfuryl propane (DTHFP), 60 grams of butadiene, 35 grams of styrene, and 5 grams of p-tert-butoxystyrene. , turn on the stirring, raise the temperature to 30°C, inject the cyclohexane solution of n-butyllithium with a syringe, and the dosage of butyllithium is 0.67×10 -3 After 90 minutes of polymerization, water was added to terminate the reaction, the polymer was precipitated with absolute ethanol, and dried to constant weight to obtain a polarized butadiene-styrene copolymer containing p-tert-butoxyphenyl in the chain.

[0037] Using nuclear magnetic resonance spectrometer ( 1 H-NMR) to analyze and test the composition of the copolymer, the mass percentage of the combined butadiene content is 60.3%, the combined mass percentage of the styrene content is 34.9%, and the combined mass percentage of the ethylene oxide content is 4.8%; The microstructure of the copolyme...

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 chain polarized butadiene-styrene copolymer and a preparation method thereof, and the preparation method of the butadiene-styrene copolymer comprises the following steps: 1) adding a polar activator and three monomers of butadiene, styrene and p-tert-butoxystyrene into a reactor in a non-polar hydrocarbon solvent; (2) starting stirring, adding an alkyl lithium initiator, and carrying out a polymerization reaction, and (3) after the polymerization reaction is completed, terminating the reaction, and separating and drying a polymer, so as to obtain the chain polarized butadiene-styrene copolymer. The copolymer provided by the invention is a polarized butadiene-styrene copolymer containing an ether bond group in a chain, the copolymer has excellent compatibility with carbon black, silicon dioxide and a polar polymer, the mechanical property of a composition containing the copolymer can be remarkably improved, and heat generation is reduced. The copolymer has wide application prospects in the fields of high-performance tire manufacturing, plastic modification and the like.

Description

technical field [0001] The invention belongs to the field of polymer chemistry, and in particular relates to a mid-chain polarized butadiene-styrene copolymer and a preparation method. Background technique [0002] Butadiene-styrene copolymer is a synthetic rubber material with excellent comprehensive properties, commonly known as styrene-butadiene rubber, which is widely used in industrial products such as automobile tires, rubber hoses, tapes, rubber sheets, etc. It is an ideal type of rubber, and can also be used for vibration damping, insulation, foaming materials, asphalt, plastic modification and other fields. Butadiene-styrene copolymers are polymerized from non-polar butadiene and styrene monomers, and have poor compatibility with polar inorganic fillers for reinforcement, such as carbon black and silica. By increasing the polarity of butadiene-styrene copolymer, its compatibility with carbon black, silica or polar polymer materials can be improved, and it has a wid...

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): C08F236/10C08F212/08C08F212/14
CPCC08F236/10C08F212/08C08F212/22Y02E60/10
Inventor 张春庆吕航赵忠夫李战胜
Owner DALIAN UNIV OF TECH
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com