Preparation method of macroporous weak-basicity acrylic acid series anion exchange resin

An exchange resin and weakly alkaline technology, which is applied in the direction of ion exchange, ion exchange regeneration, ion exchange treatment devices, etc., can solve the problems of rapid decline in mechanical strength, weak adsorption resin capacity, and low oxidation resistance, and achieve improved Resin exchange capacity, good anti-pollution performance, and high mechanical strength

Active Publication Date: 2019-02-12
扬州金珠树脂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The existing adsorption resins have the characteristics of weak ability in practical application, large volume change after adsorption, rapid decline in mechanical strength, low anti-oxidation ability, and slow exchange rate.

Method used

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  • Preparation method of macroporous weak-basicity acrylic acid series anion exchange resin
  • Preparation method of macroporous weak-basicity acrylic acid series anion exchange resin
  • Preparation method of macroporous weak-basicity acrylic acid series anion exchange resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049](1) Prepare the water phase: add 92g of industrial refined salt to 400mL of deionized water, stir, and wait for it to fully dissolve, add 0.7g of hydroxyethyl cellulose, and then add 0.001g of methylene blue solution with a mass percentage concentration of 1%. To develop color, heat up to 50°C for later use;

[0050] (2) Prepare the organic phase, weigh 120g of methyl acrylate in a 500mL beaker, add 26g of divinylbenzene, then add 30g of liquid paraffin, heat up to 60°C, and wait until it is fully dissolved, then add 1.8g of benzoyl peroxide, Fully mix and stir for 5 minutes, set aside;

[0051] (3) Suspension polymerization reaction: Add the organic phase prepared in step (2) to the aqueous phase prepared in step (1) to obtain a mixed solution, wherein the mass ratio of the organic phase to the aqueous phase is 0.360:1, stir the mixed solution and slowly heat up To 65°C, the heating rate is 5°C / 10min, maintain for 2h, then raise the temperature to 75°C, maintain for 2h...

Embodiment 2

[0056] (1) Prepare the water phase: add 90 g of industrial refined salt to 400 mL of deionized water, stir, and wait for it to fully dissolve, then add 0.7 g of hydroxyethyl cellulose, and then add 0.001 g of methylene blue solution with a concentration of 1% by mass. To develop color, heat up to 50°C for later use;

[0057] (2) Prepare the organic phase, weigh 120g of methyl acrylate in a 500mL beaker, add 26g of divinylbenzene, then add 30g of liquid paraffin, heat up to 60°C, and wait until it is fully dissolved, then add 1.8g of benzoyl peroxide, Fully mix and stir for 5 minutes, set aside;

[0058] (3) Suspension polymerization: Add the organic phase prepared in step (2) to the aqueous phase prepared in step (1) to obtain a mixed solution, wherein the mass ratio of the organic phase to the aqueous phase is 0.36:1, and the mixed solution is stirred and heated slowly To 65°C, the heating rate is 5°C / 10min, maintain for 2h, then raise the temperature to 75°C, maintain for 2...

Embodiment 3

[0063] (1) Prepare the water phase: add 90 g of industrial refined salt to 400 mL of deionized water, stir, and wait for it to fully dissolve, then add 0.7 g of hydroxyethyl cellulose, and then add 0.001 g of methylene blue solution with a concentration of 1% by mass. To develop color, heat up to 50°C for later use;

[0064] (2) Prepare the organic phase, weigh 120g of methyl acrylate in a 500mL beaker, add 26g of divinylbenzene, then add 30g of liquid paraffin, heat up to 60°C, and wait until it is fully dissolved, then add 1.8g of benzoyl peroxide, Fully mix and stir for 5 minutes, set aside;

[0065] (3) Suspension polymerization: Add the organic phase prepared in step (2) to the aqueous phase prepared in step (1) to obtain a mixed solution, wherein the mass ratio of the organic phase to the aqueous phase is 0.36:1, and the mixed solution is stirred and heated slowly To 65°C, the heating rate is 5°C / 10min, maintain for 2h, then raise the temperature to 75°C, maintain for 2...

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Abstract

The invention belongs to the technical field of ion exchange resin, and relates to a preparation method of macroporous weak-basicity acrylic acid series anion exchange resin. The preparation method comprises the following steps: adding industrial refined salt into deionized water and stirring; adding hydroxyethyl cellulose and methylene blue, and heating to obtain a water phase; mixing methyl acrylate, divinylbenzene and liquid paraffin, heating and adding benzoyl peroxide, and stirring to obtain an organic phase; mixing the organic phase with the water phase, stirring and heating for reaction; cooling and filtering to obtain a high-molecular polymer; soaking the polymer in toluene, heating and stirring; thoroughly filtering out the toluene; cleaning, drying and screening to obtain a semi-finished product white ball of resin; after amination and methylation, taking out the resin and rinsing, and filtering out moisture to obtain the macroporous weak-basicity acrylic acid series anion exchange resin. The resin prepared by the invention has the advantages of simple technology, fast exchange velocity, high regeneration efficiency, good anti-pollution property, environmental friendliness, no pollution and broad application prospect.

Description

technical field [0001] The invention belongs to the technical field of ion exchange resins, and in particular relates to a preparation method of macroporous weakly basic acrylic anion exchange resins. Background technique [0002] There are a wide variety of ion exchange resin products. According to the nature of the active groups it carries, it can be divided into strong acid cations, weak acid cations, strong base anions, weak base anions, chelating, amphoteric and redox resins; according to different functions and principles of action, it can be divided into water treatment Resin, adsorption resin and resin catalyst can be divided into gel type and macroporous type according to different pore types. [0003] Adsorption resin is a resin adsorbent characterized by adsorption and has a porous three-dimensional structure; among them, acrylic acid type weakly basic anion exchange resin has been used in drug extraction, decolorization of biological fermentation liquid, prelimi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/14C08F212/36C08F8/32C08F8/00B01D15/08
CPCB01D15/08C08F8/00C08F8/32C08F220/14C08F212/36
Inventor 阮圣如陈必玉张雪峰吉霞卢浩李玉琴
Owner 扬州金珠树脂有限公司
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