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A kind of preparation method of epoxy succinic acid polymer containing sulfonic acid group

An epoxy succinic acid, sulfonic acid group-containing technology, applied in chemical instruments and methods, water/sludge/sewage treatment, descaling and water softening, etc., can solve problems such as environmental impact, and achieve high conversion rate of polymerization reaction , good scale inhibition performance and the effect of dispersing iron oxide performance

Active Publication Date: 2021-08-17
ENERGY RESOURCES INST HEBEI ACADEMY OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

CN107857374 discloses a preparation method of a polymer scale inhibitor, which is specifically formed by copolymerization of epoxysuccinic acid, itaconic acid, and 2-acrylamido-2-methylpropanesulfonic acid. , so that the scale inhibition and dispersion properties have been improved to a certain extent, but nitrogen elements still exist in the polymer, which has a certain impact on the environment

Method used

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  • A kind of preparation method of epoxy succinic acid polymer containing sulfonic acid group

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Experimental program
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Effect test

Embodiment 1

[0025] The preparation of embodiment 1 epoxy succinic acid

[0026] A certain amount of maleic anhydride and deionized water are mixed, and the addition of deionized water is 1.5 times of the amount of maleic anhydride water, stirred until dissolved, slowly adding a mass fraction of 50% sodium hydroxide solution in the solution, its The mass is 1.5 times the mass of the raw material maleic anhydride, and the temperature of the solution is controlled below 55°C to hydrolyze the maleic anhydride into maleate, and then heated to 55°C, adding catalyst sodium tungstate, the mass of sodium tungstate is horse 8% of the total mass of anhydride and sodium hydroxide, then slowly add 30% hydrogen peroxide, the amount of hydrogen peroxide added is 2.5 times the mass of the raw material, during the dropwise addition, the pH value is controlled between 4 and 5.5, and the temperature is raised to 85 ℃, epoxidation for 1.5h, stopped heating and white crystals precipitated, waited for the reac...

Embodiment 2

[0028] Weigh a certain amount of epoxysuccinic acid (ESA), itaconic acid (IA), and sodium methacrylate sulfonate (SMAS) prepared in Example 1, the ratio is ESA:IA:SMAS=2:2:1, add In the four-necked flask, and add a certain amount of distilled water, the add-on of deionized water is about the sum of the total mass of raw materials, the add-on of ammonium persulfate is 5% of the total mass of raw materials, and the add-on of isopropanol is the total mass of raw materials 10% of the 10% of the water bath, heated to 96 ° C, using two syringe pumps to drop the concentration of 10% sodium bisulfite solution and the concentration of 30% hydrogen peroxide at the same time, the addition of sodium bisulfite solution and hydrogen peroxide is the total amount of raw materials 15% of the mass. Set the rate of addition so that the addition of the two is completed within 1 h at the same time. The reaction was continued at 96° C. for 5 hours, and after cooling down to room temperature, a lig...

Embodiment 3

[0030] Weigh a certain amount of epoxysuccinic acid (ESA), itaconic acid (IA), and sodium methacrylate sulfonate (SMAS) prepared in Example 1, the ratio is ESA:IA:SMAS=2:2:1, add In the four-necked flask, and add a certain amount of distilled water, the add-on of deionized water is about the sum of the total mass of raw materials, the add-on of ammonium persulfate is 5% of the total mass of raw materials, and the add-on of isopropanol is the total mass of raw materials 15% of 15%, water bath heated to 96 ℃, with two syringe pumps dropwise at the same time 10% concentration of sodium bisulfite solution and 30% concentration of hydrogen peroxide, the addition of sodium bisulfite solution and hydrogen peroxide is the total amount of raw materials 20% of the mass. Set the dropping rate so that the two drops are completed simultaneously within 1.5 hours. The reaction was continued at 96° C. for 6 hours, and after cooling down to room temperature, a light yellow transparent liquid ...

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Abstract

The present invention relates to a kind of preparation method of epoxy succinic acid polymer containing sulfonic acid group, it is obtained by copolymerization of monomer epoxy succinic acid, itaconic acid and sodium methacrylic sulfonate, described epoxy succinic acid, The mass ratio of itaconic acid and sodium methacrylate sulfonate is 2:2:1, and the present invention takes epoxysuccinic acid, itaconic acid and sodium methacrylate sulfonate as monomers, and uses ammonium persulfate as initiator, As a chain transfer agent, isopropanol can effectively promote the polymerization of the three monomers, so that the conversion rate of the polymerization reaction is high, and the obtained polymer has good scale inhibition performance, dispersing iron oxide performance and good biodegradation performance. The present invention provides The ternary polymer is specifically used as a scale inhibitor and dispersant for industrial circulating cooling water. The main feature is that it is non-phosphorus and non-nitrogen, easy to biodegrade, and will not pollute the water environment after long-term use.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to a preparation method of an epoxy succinic acid polymer containing sulfonic acid groups. Background technique [0002] With the restrictions on phosphorus and nitrogen wastewater discharge and the strategic requirements of sustainable development at home and abroad, the development of environmentally friendly scale inhibitors and water treatment processes has become a research focus at home and abroad. At present, the research on environment-friendly water treatment agents at home and abroad is mainly polyaspartic acid (PASP) and polyepoxysuccinic acid (PESA). PASP is phosphorus-free, non-toxic, biodegradable, and has chelating and scale-inhibiting functions. However, PASP molecules contain nitrogen, and long-term use can easily cause eutrophication and damage the water environment. PESA has the characteristics of non-phosphorus, non-nitrogen and biodegradabil...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F283/06C08F222/02C08F228/02C08F2/38C08G65/22C02F5/10
Inventor 闫美芳刘振法刘展张利辉高玉华李海花
Owner ENERGY RESOURCES INST HEBEI ACADEMY OF SCI
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