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Maltose modified SBS (styrene-butadiene-styrene block copolymer), preparation method and adhesive formed by modified SBS

A maltose and modified technology, applied in the field of polymers, can solve the problems of short shelf life of SBS adhesives and cannot meet the needs of actual use, and achieve the effect of not being easy to break

Inactive Publication Date: 2014-12-10
王茜茜
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is that the shelf life of the existing SBS adhesive is still very short, which cannot meet the needs of actual use; furthermore, a modified SBS whose outer and inner segments are not easily broken in the use environment is proposed.

Method used

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  • Maltose modified SBS (styrene-butadiene-styrene block copolymer), preparation method and adhesive formed by modified SBS
  • Maltose modified SBS (styrene-butadiene-styrene block copolymer), preparation method and adhesive formed by modified SBS

Examples

Experimental program
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Effect test

preparation example 1

[0028] Add 700g of cyclohexane and 16g of maltose to 325g of styrene, then add 6.5g of tetrahydrofuran and 2.2g of n-butyllithium, carry out the first stage of polymerization reaction at 50-80°C, and add 350g of butanediol after 25-30min of reaction Carry out the second-stage polymerization reaction at 100-120°C. After 25-30min, add the remaining 325g of styrene, 300g cyclohexane and 16.5g maltose, and carry out the third-stage polymerization reaction at 70-100°C. Reaction 25- After 30 min, 10 g of water was added to terminate the reaction and discharge, so as to obtain modified SBS I.

preparation example 2

[0030] Add 1400g of cyclohexane and 238g of maltose to 475g of styrene, then add 28.5g of tetrahydrofuran and 7.6g of n-butyllithium, carry out the first stage of polymerization at 50-80°C, and add 50g of butanediol after 25-30min of reaction Carry out the second-stage polymerization reaction at 70-80°C, react for 25-30min, then add the remaining 475g of styrene, 600g cyclohexane and 237g maltose, carry out the third-stage polymerization reaction at 70-100°C, react for 25-30min After that, 15 g of ethanol was added to terminate the reaction and discharge to obtain modified SBS II.

preparation example 3

[0032] Add 1050g of cyclohexane and 160g of maltose to 400g of styrene, then add 16g of tetrahydrofuran and 4g of n-butyllithium, carry out the first stage of polymerization reaction at 50-80°C, and add 200g of butadiene after 25-30min of reaction, Carry out the second stage of polymerization at 80-120°C, add the remaining 400g of styrene, 450g of cyclohexane and 160g of maltose after 25-30min of reaction, and carry out the third stage of polymerization at 70-100°C, after 25-30min of reaction, add 15g of ethanol terminated the reaction and discharged to obtain modified SBS III.

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Abstract

The invention discloses a maltose modified SBS (styrene-butadiene-styrene block copolymer). The SBS is obtained through reaction among styrene, butadiene and maltose, wherein the mass ratio of styrene to butadiene is (65-95) to (5-35). The invention also discloses a preparation method of the SBS and an adhesive comprising the modified SBS. The adhesive comprising the prepared modified SBS has high stability and shelf life as long as one year after the adhesive is opened.

Description

technical field [0001] The invention belongs to the technical field of macromolecules, and relates to a styrene-butadiene-styrene block copolymer modified by maltose and a preparation method thereof, and also relates to an adhesive using the modified block copolymer. Background technique [0002] At present, styrene-butadiene-styrene block copolymer (SBS) is composed of polystyrene segment and polybutadiene segment, because SBS has the characteristics of both rubber and plastic, and has excellent comprehensive performance, it has been Widely used as an adhesive for interior decoration, furniture manufacturing and other industries. Traditional SBS adhesives also need to add a large amount of volatile organic solvents such as toluene, xylene, and turpentine. Although the above-mentioned organic solvents have played an important role in the uniform dispersion of the main material SBS, benzene solvents are easy to pollute the environment, and turpentine will reduce The speed of...

Claims

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Application Information

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IPC IPC(8): C08F297/04C09J153/02
Inventor 王茜茜
Owner 王茜茜
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