A kind of diacetone acrylamide-acryloyloxyethyltrimethylammonium chloride copolymer and preparation method thereof

A technology of acryloyloxyethyltrimethylammonium chloride and diacetone acrylamide is applied in the field of diacetone acrylamide-acryloyloxyethyltrimethylammonium chloride copolymer and preparation thereof, and can solve the residual cost , flocculant toxicity and other problems, to achieve the effect of less side reactions, short process cycle and high purity

Active Publication Date: 2015-09-30
SHAANXI UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0018] The purpose of the present invention is to provide a diacetone acrylamide-acryloyloxyethyltrimethylammonium chloride copolymer and its preparation method and application, so as to solve the problems of existing flocculant toxicity residue and high cost

Method used

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  • A kind of diacetone acrylamide-acryloyloxyethyltrimethylammonium chloride copolymer and preparation method thereof
  • A kind of diacetone acrylamide-acryloyloxyethyltrimethylammonium chloride copolymer and preparation method thereof
  • A kind of diacetone acrylamide-acryloyloxyethyltrimethylammonium chloride copolymer and preparation method thereof

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Embodiment 1

[0045] A preparation method of diacetone acrylamide-acryloyloxyethyltrimethylammonium chloride copolymer, comprising the following steps:

[0046] (1) Dissolve 3g of reaction monomer diacetone acrylamide in 20mL of distilled water, stir until completely dissolved to make diacetone acrylamide solution; weigh 0.1g potassium persulfate and 0.05g sodium bisulfite, add diacetone acrylamide solution, N 2 Deoxygenation, stirring at 40°C until fully mixed to obtain a diacetone acrylamide solution containing an initiator;

[0047] (2) Under nitrogen gas, weigh 15 g of acryloyloxyethyltrimethylammonium chloride with a mass fraction of 60% (mass ratio of acryloyloxyethyltrimethylammonium chloride: diacetone acrylamide = 3 : 1), add dropwise at a rate of 4 drops / min into the diacetone acrylamide solution containing the initiator, after dropping for 1.5h, continue the reaction at 30°C for 7h to obtain diacetoneacrylamide-acryloyloxyethyl The crude product solution of trimethylammonium ch...

Embodiment 2

[0050] A preparation method of diacetone acrylamide-acryloyloxyethyltrimethylammonium chloride copolymer, comprising the following steps:

[0051] (1) Dissolve 5g of reaction monomer diacetone acrylamide in 35mL of distilled water, stir until completely dissolved to make diacetone acrylamide solution; weigh 0.16g of potassium persulfate and 0.08g of sodium bisulfite, add diacetone acrylamide solution, N 2 Deoxygenation, stirring at 40°C until fully mixed to obtain a diacetone acrylamide solution containing an initiator;

[0052] (2) Weigh 33.3 g of acryloyloxyethyltrimethylammonium chloride with a mass fraction of 60%: mass ratio of diacetone acrylamide = 4:1), add 4 drops / Add it dropwise into the diacetone acrylamide solution containing the initiator at a speed of 1 minute, and then continue to react at 45°C for 5 hours after dropping for 1 hour to obtain diacetone acrylamide-acryloyloxyethyltrimethylammonium chloride copolymer Crude solution;

[0053] (3) At 80°C, the ob...

Embodiment 3

[0055] A preparation method of diacetone acrylamide-acryloyloxyethyltrimethylammonium chloride copolymer, comprising the following steps:

[0056] (1) Dissolve 6g of reaction monomer diacetone acrylamide in 50mL of distilled water, stir until completely dissolved to make diacetone acrylamide solution; weigh 0.12g of potassium persulfate and 0.06g of sodium bisulfite, add diacetone acrylamide solution, N 2 Deoxygenation, stirring at 40°C until fully mixed to obtain a diacetone acrylamide solution containing an initiator;

[0057] (2) Weigh 20 g of acryloyloxyethyltrimethylammonium chloride with a mass fraction of 60%, and add it dropwise to the diacetone acrylamide solution containing the initiator at a rate of 4 drops / min. After 1.5 hours of dropping , and continue to react at 50° C. for 4 hours to obtain a crude product solution of diacetone acrylamide-acryloyloxyethyltrimethylammonium chloride copolymer;

[0058] (3) At 80°C, the obtained crude copolymer was subjected to S...

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Abstract

The invention discloses a diacetone acrylamide-acryloyloxyethyl trimethyl ammonium chloride copolymer, as well as a preparation method and application thereof, and belongs to the field of a preparation method for waste water treatment flocculant. The invention solves the problems that the flocculant in the prior art has poor waste treatment effect and high cost. According to the method, an aqueous solution free radical polymerization chain type reaction mechanism is adopted; non-toxic, odorless and green raw materials comprising diacetone acrylamide and acryloyloxyethyl trimethyl ammonium chloride serve as reaction monomers; potassium peroxodisulfate serves as an initiator; and the diacetone acrylamide-acryloyloxyethyl trimethyl ammonium chloride copolymer is obtained through reaction. The method has little side reaction. The obtained novel flocculant product is high in purity, simple in reaction steps, short in process period, easy to operate, environment-friendly and suitable for industrialized large-scale production.

Description

technical field [0001] The invention belongs to the technical field of flocculants, and relates to a diacetone acrylamide-acryloyloxyethyltrimethylammonium chloride copolymer and a preparation method thereof. Background technique [0002] In the field of industrial wastewater treatment, there are many flocculants for wastewater treatment, which are widely used and economical. Including inorganic polymer flocculants, organic polymer flocculants, microbial flocculants and composite flocculants. With the enhancement of the world's environmental protection awareness and the implementation of my country's sustainable development strategy, in recent years, in order to ensure the sustainable use of fresh water resources and solve the problem of water environmental pollution in different degrees, a lot of research has been done on water treatment at home and abroad, and many developments have been made. Various wastewater treatment processes, such as flocculation precipitation metho...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/34C08F220/58C08F2/10C08F4/40C02F1/56
Inventor 郭睿乔宇窦尹辰王安琪郑淑华白万乔张慧月
Owner SHAANXI UNIV OF SCI & TECH
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