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Quickly-dissolved high-molecular anionic polyacrylamide

A polyacrylamide, anionic technology, applied in the field of polyacrylamide, can solve the problems of insoluble raw materials, poor solubility and insolubility of polyacrylamide, and achieve the effect of fast dissolution speed, high molecular weight and good solubility

Inactive Publication Date: 2019-05-07
扬州科苑化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Many polyacrylamides have poor solubility and cannot be dissolved well, resulting in a large amount of waste residue that cannot be dissolved.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Instant polymer anionic polyacrylamide,

[0021] Pre-preparation of raw materials

[0022] Add 90-120kg of acrylamide, 0.5-3kg of acrylic acid, 40-80kg of deionized water, 0.5-3kg of urea, and 1-5kg of thiourea into the polymerization tank;

[0023] Prepared raw materials for polymerization

[0024] Use sodium hydroxide solution to adjust the pH value to about 5-7, pass through high-purity nitrogen, add disodium edetate 0.001-0.005kg, 2.2 azobis (N.N methyl isobutylamidine dihydrochloride) 0.001- 0.009kg, ammonium persulfate 0.001-0.009kg, sodium bisulfite 0.001-0.008kg, turn on ultraviolet light irradiation to initiate polymerization, after 30-100 minutes it becomes a translucent rubber block, add 1-10kg sodium carbonate to the rubber block or add 1-9kg sodium hydroxide, 1-5kg stearic acid, steam, temperature controlled at 80-110°C, hydrolysis for 1-5 hours, granulation, drying temperature controlled at about 90-110°C;

[0025] The raw materials after polymerization...

Embodiment 2

[0036] Instant polymer anionic polyacrylamide,

[0037] Pre-preparation of raw materials

[0038] Add 90-120kg of acrylamide, 0.5-3kg of acrylic acid, 40-80kg of deionized water, 0.5-3kg of urea, and 1-5kg of thiourea into the polymerization tank;

[0039] Prepared raw materials for polymerization

[0040] Use sodium hydroxide solution to adjust the pH value to about 5-7, pass high-purity nitrogen, add disodium edetate 0.001-0.005kg, 2.2 azobis (N.N methyl isobutylamidine dihydrochloride) 0.001- 0.009kg, ammonium persulfate 0.001-0.009kg, sodium bisulfite 0.001-0.008kg, turn on ultraviolet light irradiation to initiate polymerization, after 30-100 minutes it becomes a translucent rubber block, add 1-10kg sodium carbonate or add 1-9kg sodium hydroxide, 1-5kg stearic acid, steam, temperature controlled at 80-110°C, hydrolysis for 1-5 hours, granulation, drying temperature controlled at about 90-110°C;

[0041] The raw materials after polymerization are pulverized

[0042] Fi...

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PUM

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Abstract

The invention provides quickly-dissolved high-molecular anionic polyacrylamide. The polyacrylamide is prepared by the following steps: adding 90-120 kg of acrylamide, 0.5-3 kg of acrylic acid, 40-80 kg of deionized water, 0.5-3 kg of urea and 1-5 kg of thiourea into a polymerization tank, adjusting the pH to about 5-7 by using a sodium hydroxide solution, introducing a high-purity nitrogen gas, adding 0.001-0.005 kg of ethylenediaminetetraacetic acid, 0.001-0.009 kg of 2,2-azobis(N,N-methylisobutylamidine dihydrochloride, 0.001-0.009 kg of ammonium persulfate and 0.001-0.008 kg of sodium hydrogen sulfite, adding deionized water into an acrylamide monomer and anionic monomer acrylic acid or methacrylic acid, performing dilution to a required concentration, introducing a high-purity nitrogengas, adding an auxiliary agent, a complexing agent, a reducing agent and an initiator, and performing a polymerization reaction under irradiation of ultraviolet light to form the translucent rubber block. The product provided by the invention has an ultra-high molecular weight, good solubility and a quick dissolution speed.

Description

technical field [0001] The invention relates to a polyacrylamide, in particular to an instant polymer anionic polyacrylamide. Background technique [0002] The physical and chemical treatment of sewage generally involves adding a flocculant to the sewage to coagulate the fine suspended matter in the sewage. Then add coagulant or flocculant, use the long-chain bridging effect of polyacrylamide macromolecular compound, so that the condensed suspended matter will further increase into alum flowers, or settle in the sedimentation tank, and accumulate into wet sludge Or wet sludge; or in the air flotation tank, under the action of small air bubbles, the wet sludge is collected on the top of the flotation tank and separated from the water, so that the water becomes clear and meets environmental protection requirements, which can be discharged or reused. Many polyacrylamides have poor solubility and cannot be dissolved well, resulting in a large amount of waste residue that cannot...

Claims

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Application Information

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IPC IPC(8): C08F220/56C08F220/06C08F8/12C08F2/48
Inventor 朱定阳
Owner 扬州科苑化工有限公司