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

Olefin copolymer and preparation method and application thereof

An olefin copolymer and copolymerization technology, applied in the field of olefin copolymer, can solve the problems of large rolling resistance of rubber, and achieve the effect of reducing rolling resistance

Active Publication Date: 2016-12-28
CHINA PETROLEUM & CHEM CORP +1
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a kind of olefin copolymer with lower rolling resistance, the preparation method of described olefin copolymer, the olefin copolymer prepared by this method in order to overcome the defect that existing rubber rolling resistance is bigger. and the application of the olefin copolymer in the preparation of tires

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
  • Olefin copolymer and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0022] The preparation method of olefin copolymer provided by the invention comprises the following steps:

[0023] (1) Under an inert gas environment, the tin-containing organic dilithium initiator and a conjugated diene monomer and a monovinylarene monomer are carried out in an inert solvent for the first polymerization reaction;

[0024] (2) When the total monomer conversion rate of the conjugated diene monomer and monovinylarene monomer reaches 70%-85%, the first polymerization reaction product and isoprene monomer are subjected to the second polymerization reaction.

[0025] It can be seen from the principle of polymerization that the olefin copolymer prepared by the above method contains a copolymerization structural unit 1 and a copolymerization structural unit 2, and the copolymerization structural unit 2 is distributed at both ends of the molecular chain of the olefin copolymer, and the copolymerization structural unit 1 is a segment formed by a monovinylarene struct...

Embodiment approach

[0040] According to the present invention, the preparation method of the olefin polymer can be implemented by various existing conventional methods. According to a specific embodiment of the present invention, the preparation method of the olefin polymer may include: replacing the polymerization reactor with high-purity nitrogen for 2-3 times, adding an organic solvent to the polymerization reactor under the protection of high-purity nitrogen, Then add conjugated diolefin monomer, monovinylarene monomer and structure regulator to the polymerization reactor, raise the temperature of the polymerization reaction system to 30-150°C, and then add tin-containing organic dilithium initiator, when When the conversion rate of the total monomers in the polymerization reactor reaches 70%-85%, add isoprene into the polymerization reactor, and after the reaction is complete, add a terminator to carry out the termination reaction.

[0041] According to the present invention, preferably, aft...

preparation example 1

[0052] This preparation example is used to illustrate the tin-containing organic dilithium initiator provided by the present invention and its preparation method.

[0053] In a 250mL three-necked flask, pump and fill nitrogen, add dilithium compound Li(CH 2 ) 4 Li ether solution 20mL, dropwise added (CH 3 (CH 2 ) 7 ) 2 SnCl 2 15 mL of tetrahydrofuran solution, in which the dilithium compound Li(CH 2 ) 4 Li and (CH 3 (CH 2 ) 7 ) 2 SnCl 2 The molar ratio is 2:1, and the reaction is stopped after reacting at 10° C. for 2 hours to obtain a tin-containing organic dilithium initiator. The concentration of active lithium measured by double titration was 0.512 mol / L, and the functionality was 1.88.

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

PropertyMeasurementUnit
molecular weight distributionaaaaaaaaaa
Login to View More

Abstract

The invention relates to the field of polymers, and particularly discloses an olefin copolymer and a preparation method and application thereof. The preparation method of the olefin copolymer comprises the steps that 1, in an inert gas environment, a tin-containing organic dilithium initiator, a conjugated diene monomer and a mono vinyl arene monomer are subjected to a first polymerization reaction in an inert solvent; 2, when the total monomer conversion rate of the conjugated diene monomer and the mono vinyl arene monomer reaches 70%-85%, a first polymerization reaction product and an isoprene monomer are subjected to a second polymerization reaction. According to preparation method, a tin-containing organic dilithium compound is used as the initiator, preparation is conducted in the mode of adding the raw materials step by step, and rubber prepared through the method has low rolling resistance and has a wide application prospect in the tire industry.

Description

technical field [0001] The invention relates to an olefin copolymer, a preparation method of the olefin copolymer, an olefin copolymer prepared by the method and an application of the olefin copolymer in tire preparation. Background technique [0002] In recent years, troubled by energy, environmental pollution and other issues, people began to pay attention to the development of energy-saving materials. As far as the automobile industry is concerned, people's requirements for the safety of tire rubber and energy-saving tread rubber are constantly increasing. Not only must the tire rubber have good wear resistance and wet skid resistance, but also reduce its rolling as much as possible. Resistance, that is, to reduce the hysteresis loss of rubber used in tires. [0003] Among them, in the olefin copolymer used as rubber, there is usually random distribution between different monomer structures, that is, the different monomer structures are basically evenly distributed in th...

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
Patent Type & Authority Applications(China)
IPC IPC(8): C08F297/04C08F4/48C08L53/02
Inventor 张宇婷杜昕毕海鹏刘冬梅
Owner CHINA PETROLEUM & CHEM CORP
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