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Ternary copolymerization anionic polyacrylamide and preparation method thereof

A polyacrylamide and anionic technology, which is applied in the field of ternary copolymerized anionic polyacrylamide and its preparation, can solve the problems of increasing synthesis cost, affecting product performance, and low level of serialization, so as to reduce production cost and facilitate configuration , The effect of simplifying the generation process

Active Publication Date: 2016-12-07
HENAN HONGKANG ENVIRONMENTAL PROTECTION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] At present, domestic organic polymer flocculants have already had a considerable scale of industrial production, but overall, the existing industrially produced organic polymer flocculants have problems such as a small number of products, insufficient quality, and a low level of serialization. Especially the anionic flocculants are far from meeting the needs of the market
The synthesis of traditional anionic polyacrylamide often requires the use of a large amount of organic solvents and surfactants, which not only increases the synthesis cost, but also may cause secondary pollution and affect product performance.

Method used

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  • Ternary copolymerization anionic polyacrylamide and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The ternary copolymerized anionic polyacrylamide provided in this example is prepared by the following steps:

[0025] 1) Weigh 15g of nonionic monomer methacrylamide, 9g of anionic monomer maleic acid and 1g of 2-acrylamido-2-methylpropanesulfonic acid in proportion, add 75g of distilled water, and stir until completely Dissolving, that is, preparing an aqueous monomer solution with a total monomer mass concentration of 25%;

[0026] 2) Add 0.05g urea and 0.1g ascorbic acid to the monomer aqueous solution as co-solvent, 0.5g disodium ethylenediamine tetraacetate as a complexing agent, then transfer to a polytetrafluoroethylene reactor, and pass high-purity nitrogen gas for 15min ;

[0027] 3) Add 0.3g of redox agent to the product obtained in step 2) (ammonium persulfate and sodium bisulfite are the oxidizing agent and reducing agent respectively, and the mass ratio is 1:1) and 2g of initiator azobisisobutyl Imidazoline hydrochloride, continue to feed high-purity nit...

Embodiment 2

[0031] The ternary copolymerized anionic polyacrylamide provided in this example is prepared by the following steps:

[0032] 1) Weigh 20g of nonionic monomer methacrylamide, 8g of anionic monomer maleic acid and 2g of 2-acrylamido-2-methylpropanesulfonic acid in proportion, add 70g of distilled water, and stir until completely Dissolving, that is, preparing an aqueous monomer solution with a total monomer mass concentration of 30%;

[0033] 2) Add 0.08g of urea and 0.15g of ascorbic acid to the monomer aqueous solution as a co-solvent, 0.5g of disodium edetate as a complexing agent, then transfer to a polytetrafluoroethylene reactor, and pass through high-purity nitrogen for 20min ;

[0034] 3) Add 0.4g of redox agent to the product obtained in step 2) (the oxidant and reducing agent are ammonium persulfate and sodium bisulfite respectively, the mass ratio is 1: 2) and 3g of initiator azobisisobutyl Imidazoline hydrochloride, continue to feed high-purity nitrogen for 10 min...

Embodiment 3

[0038] The ternary copolymerized anionic polyacrylamide provided in this example is prepared by the following steps:

[0039] 1) Weigh 23g of nonionic monomer methacrylamide, 10g of anionic monomer maleic acid and 2g of 2-acrylamido-2-methylpropanesulfonic acid in proportion, add 65g of distilled water, and stir until completely Dissolving, that is, preparing an aqueous monomer solution with a total monomer mass concentration of 35%;

[0040] 2) Add 0.1g urea and 0.1g ascorbic acid to the monomer aqueous solution as co-solvent, 1.0g disodium ethylenediamine tetraacetate as a complexing agent, then transfer to a polytetrafluoroethylene reactor, and pass high-purity nitrogen for 30min ;

[0041] 3) Add 0.5g of redox agent to the product obtained in step 2) (the oxidant and reducing agent are ammonium persulfate and sodium bisulfite respectively, the mass ratio is 1:1) and 5g of initiator azobisisobutyl Imidazoline hydrochloride, continue to feed high-purity nitrogen for 10 min...

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Abstract

The invention relates to ternary copolymerization anionic polyacrylamide which comprises a monomer aqueous solution, urea, ascorbic acid, ethylene diamine tetraacetic acid, an oxidizing and reducing agent, azobisisobutylimidazoline hydrochloride and m-dihydroxybenzene, wherein the urea, the ascorbic acid, the ethylene diamine tetraacetic acid, the oxidizing and reducing agent, the azobisisobutylimidazoline hydrochloride and the m-dihydroxybenzene respectively account for 0.05-0.1 percent, 0.05-0.15 percent, 0.1-1.0 percent, 0.2-0.5 percent, 1-5 percent and 1-2 percent of the weight of the monomer aqueous solution; the monomer aqueous solution comprises the following raw materials in percentage by weight: 15-25 percent of methacrylamide, 5-10 percent of maleic acid, 1-2 percent of 2-crylamido-2-methylpropanesulfonic acid and 60-75 percent of dilated of distilled water. The ternary copolymerization anionic polyacrylamide provided by the invention has the advantages of being simple in synthetic method, good in product water solubility, environment-friendly, low in cost and the like.

Description

technical field [0001] The invention belongs to the technical field of water-soluble polymer materials, and in particular relates to a ternary copolymerized anionic polyacrylamide and a preparation method thereof. Background technique [0002] Polyacrylamide (PAM) is a linear organic high molecular polymer and also a high molecular water treatment flocculant product. Because of its good flocculation effect, PAM is used as a flocculant in water treatment and is widely used in sewage treatment. According to the ionic characteristics, it can be divided into four types: non-ionic (NPAM), anionic (APAM), cationic (CPAM) and amphoteric. [0003] Anionic polyacrylamide (APAM) has both chemically active amide groups and negatively charged carboxylic acid functional groups on its molecular chain, such as: carboxylate anion (-COO - ), sulfonic acid anions (-SO 3 - ), Sulfate anion (-OSO 3 - ), etc., the activity of these groups makes it have the characteristics of reducing dosag...

Claims

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Application Information

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IPC IPC(8): C08F220/56C08F222/02C08F220/58C08F2/10C08F2/42C08F4/04C08F4/40
CPCC08F2/10C08F2/42C08F4/04C08F4/40C08F220/56C08F222/02C08F220/585
Inventor 汤广斌李丰登孙长城桑书梅凡月慧韩娟刘凤仙
Owner HENAN HONGKANG ENVIRONMENTAL PROTECTION TECH
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