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A kind of preparation method of cationic water-soluble polymer

A water-soluble polymer and cationic technology, applied in chemical instruments and methods, natural water treatment, textile industry wastewater treatment, etc., can solve the problems of low cost, high bridging ability, high flocculation, etc., and achieve good flocculation effect Effect

Active Publication Date: 2019-11-12
GUANGZHOU ZHENQING ENVIRONMENTAL PROTECTION TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current cationic water-soluble acrylic resins are difficult to achieve the combination of low cost, high bridging ability and high flocculation

Method used

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  • A kind of preparation method of cationic water-soluble polymer
  • A kind of preparation method of cationic water-soluble polymer
  • A kind of preparation method of cationic water-soluble polymer

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preparation example Construction

[0020] The present embodiment provides a kind of preparation method of cationic water-soluble polymer, comprising the following steps:

[0021] (1) Synthesis of cationic water-soluble acrylic resin: prepare a mixed solution including acrylic acid, butyl acrylate, β-hydroxyethyl methacrylate, methyl methacrylate and initiator for subsequent use, and put the solvent into a four-neck bottle , heat up to 80-100°C, then add 10-30% mixed solution to the solvent, keep warm for 10-50min, then add the remaining mixed solution dropwise, keep warm for 1-3 hours, then add initiator and solvent, then Insulate and react for 1-3 hours, and finally add methacryloyloxyethyltrimethylammonium chloride dropwise, and insulate for 1-3 hours to prepare a cationic water-soluble acrylic resin;

[0022] (2) Synthesis of cationic water-soluble polymer: mix cationic water-soluble acrylic resin and hexamethoxymethylmelamine in volume ratio of 80-100:10-30 to prepare cationic water-soluble polymer.

[002...

Embodiment 1

[0035]Synthesis of cationic water-soluble acrylic resin: 5.5 mL of methyl methacrylate, 3.5 mL of β-hydroxyethyl methacrylate, 2 mL of acrylic acid, 16 mL of butyl acrylate, and the initiator benzoyl peroxide (BPO) were mixed to obtain mixture. In a four-neck flask equipped with a stirrer, a thermometer, a constant pressure low liquid funnel and a condenser, add 20ml of n-butanol solution, start stirring, heat up the constant temperature water bath to 90°C, first add 20% of the mixed solution dropwise, and keep warm for 30min Finally, add the remaining 80% of the mixed solution dropwise at a constant speed, and the dropwise addition is completed in 2.5-4 hours. After 2 hours of heat preservation, add a certain amount of benzoyl peroxide (BPO) and 5ml n-butanol. 1.25% of the total mass of the body. Finally, keep warm for 2 hours, and then dropwise add methacryloyloxyethyltrimethylammonium chloride, the amount of which accounts for 18% of the total mass of the monomers, keep wa...

Embodiment 2

[0039] Synthesis of cationic water-soluble acrylic resin: 5.5 mL of methyl methacrylate, 4.5 mL of β-hydroxyethyl methacrylate, 5 mL of acrylic acid, 12 mL of butyl acrylate, and the initiator benzoyl peroxide (BPO) were mixed to obtain mixture. Add 45ml of n-butanol solution to a four-necked flask equipped with a stirrer, a thermometer, a constant-pressure low-liquid funnel, and a condenser tube, start stirring, raise the temperature to 90°C in a constant-temperature water bath, first add 10% of the mixed solution dropwise, and keep warm for 30 minutes Finally, add the remaining 90% mixed solution dropwise at a constant speed, and the dropwise addition is completed in 3 hours. After 2 hours of insulation, add a certain amount of benzoyl peroxide (BPO) and 14ml n-butanol. 1.25% of mass. Finally, keep warm for 2 hours, and then dropwise add methacryloyloxyethyltrimethylammonium chloride, the amount of which accounts for 15% of the total mass of the monomers, keep warm for 2 ho...

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Abstract

The invention provides a preparation method of a cationic water-soluble macromolecular polymer. The method includes the steps of: (1) synthesis of cationic water-soluble acrylic resin: preparing a mixed solution containing acrylic acid, butyl acrylate, methacrylic acid-beta-hydroxyl ethyl, methyl methacrylate and an initiator, loading a solvent into a four-neck bottle, performing heating, first adding 10-30% of the mixed solution into the solvent, then adding the remaining mixed solution dropwise, and adding the initiator and the solvent, and finally adding methacryloyloxyethyl trimethyl ammonium chloride dropwise to prepare the cationic water-soluble acrylic resin; and (2) synthesis of the cationic water-soluble macromolecular polymer: mixing the cationic water-soluble acrylic resin withhexamethoxymethyl melamine according to a volume ratio of 80-100:10-30 to obtain the cationic water-soluble macromolecular polymer. The cationic water-soluble macromolecular polymer prepared by the method provided by the invention has a good flocculation effect.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment for environmental governance, and in particular relates to a preparation method of a cationic water-soluble polymer. Background technique [0002] With the enhancement of people's awareness of environmental protection and the continuous improvement of laws, cationic water-soluble polymers have become the main direction of the development of water treatment chemicals. Among them, cationic acrylate resin is widely used in the fields of flocculant, decolorizing agent, chemical industry and environmental protection because of its advantages such as large molecular weight, positive charge, adsorption, decolorization and non-pollution. Generally, the solvents of commercially available acrylic polymers are toluene, xylene, etc., and because these solvents are toxic, they will cause certain pollution to the environment when the solvent is removed. [0003] At the same time, with people's continu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/18C08F220/14C08F220/06C08F220/20C08F265/06C08F220/34C08J3/24C07D251/70C02F1/56C02F103/34C02F103/30C08L33/06
Inventor 陈萌萌宋澄章邹志华
Owner GUANGZHOU ZHENQING ENVIRONMENTAL PROTECTION TECH
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