Polystyrene resin of containing double bond, and preparation method

A polystyrene resin and resin technology, applied in the field of functional polymers, can solve the problems of low double bond content and low cross-linking degree, and achieve the effects of simple reaction steps, high double bond content and high degree of substitution

Inactive Publication Date: 2007-07-25
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Generally, the degree of crosslinking of St-DVB copolymers is low, resulting in a low content of pendant double bonds in t

Method used

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  • Polystyrene resin of containing double bond, and preparation method
  • Polystyrene resin of containing double bond, and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Take 1g of polystyrene (cross-linking degree: 80% DVB, particle size: 5μm) into a three-neck reaction flask, add anhydrous dichloromethane to swell, stir to make it evenly dispersed, add 1ml of acryloyl chloride dropwise, blow in nitrogen, and stir 1.95 g of aluminum trichloride was added under the pressure, and the reaction was carried out at normal temperature and pressure for 4 hours. That is, a double bond-containing polystyrene resin having a double bond content of 0.93 mmol / g was obtained.

Embodiment 2

[0020] Take 1g of polystyrene (cross-linking degree: 7% DVB, particle size: 20μm) into a three-necked reaction flask, add anhydrous dichloroethane to swell, stir to make it evenly dispersed, add dropwise 1ml of acryloyl chloride, and blow in nitrogen, Add 0.64 g of aluminum trichloride under stirring, and react at room temperature and pressure for 1 hour. That is, a double bond-containing polystyrene styrene resin having a double bond content of 2.50 mmol / g was obtained.

Embodiment 3

[0022] Take 1g of polystyrene (cross-linking degree: 55% DVB, particle size: 20μm) into a three-necked reaction flask, add anhydrous nitrobenzene to swell, stir to make it evenly dispersed, add 1ml of acryloyl bromide dropwise, and blow in nitrogen. Add 0.3ml SnCl with stirring 4 , React at room temperature and pressure for 15 minutes. That is, a double bond-containing polystyrene resin having a double bond content of 2.17 mmol / g was obtained.

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Abstract

This invention discloses a method for preparing polystyrene resin containing double bonds, which is prepared from linear or crosslinked polystyrene resin or polystyrene copolymer, and acyl halide reagent containing double bonds via Friedel-Crafts acylation reaction. The double bonds thus derived can react with double bonds of other functional monomers to introduce functional groups onto the resin, thus widening the application range of the resin. The double bond content of the polystyrene resin is up to 0-5.50 mmol/g dry resin.

Description

technical field [0001] The invention belongs to the field of functional polymers. Specifically relates to a polystyrene resin containing double bonds and a preparation method thereof. Background technique [0002] At present, polystyrene resins (PS) (linear, cross-linked and structured microspheres) have been paid attention to because they can endow the resin with new and wider uses after being functionalized. There are many ways to functionalize PS, such as: sulfonation, halogenation, nitration, metallation, alkylation, acylation and so on. After functional derivatization, PS with different functional groups can be obtained, such as: sulfonic acid group, halogen group, nitro group, alkyl group with different carbon chains, etc. [0003] The double bond group is also an important functional group. It can react with other double bonded monomers or with many reagents. However, the method of deriving double bond groups on PS is usually obtained by the residual (or called: h...

Claims

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Application Information

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IPC IPC(8): C08F112/08C08F257/02C08F8/10C08J3/24
Inventor 刘晓宁魏荣卿周渊
Owner NANJING UNIV OF TECH
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