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Method for preparing non-ionic polyacrylamide emulsion and prepared emulsion

A polyacrylamide, non-ionic technology, applied in the field of organic polymer compound preparation, can solve the problem of no synthesis process, and achieve the effect of maintaining the leading position of technology and products, good stability and enhancing competitiveness

Active Publication Date: 2015-04-29
BEIJING HENGJU CHEM GRP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is no known synthetic process for the synthesis of high molecular weight, stable nonionic polyacrylamide high-concentration emulsions

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Add 20 g of styrene and maleic anhydride copolymer (Wuhan Yuancheng Technology Development Co., Ltd.) stabilizer, 12 g of polyoxyethylene sorbitan fatty acid ester emulsifier, and 350 g of organic hydrocarbon solvent gasoline into the oil phase container in parts by weight , add thermal initiator azobisisobutyronitrile 0.1g into the oil phase container, start the stirrer, the stirring speed is 100rpm, open the condensation system at the same time, control the temperature in the oil phase container to 15°C.

[0029] Add 330g of deionized water into the water phase container, start the stirrer (stirring speed 200rpm) and condensation system (control temperature 20°C), add monomer component acrylic amine 280g, EDTA 0.6g, stir evenly under low temperature conditions.

[0030] Add the monomer solution in the water phase container to the oil phase system in the oil phase container for emulsification and homogenization for 15 minutes, and the emulsification speed is 9000r / min; ...

Embodiment 2

[0033] Add 23 g of copolymers of styrene and maleic anhydride, 13 g of polyoxyethylene sorbitan fatty acid ester, and 350 g of organic hydrocarbon solvent gasoline into the oil phase container in parts by weight, and add the thermal initiator 2,2'-azobis Add 0.12 g of (isobutyronitrile) into the oil phase container, start the stirrer at a stirring speed of 100 rpm, and at the same time turn on the condensation system, and control the temperature in the oil phase container to 15°C.

[0034] Add 335g of deionized water into the water phase container, start the stirrer (stirring speed 200rpm) and condensation system (control temperature 20°C), add monomer components acrylic amine 260g, EDTA0.8g, and stir evenly under low temperature conditions.

[0035] Add the monomer solution in the water phase container to the oil phase system in the oil phase container for emulsification and homogenization for 15 minutes, and the emulsification speed is 9000r / min; when the emulsification is co...

Embodiment 3

[0038] The copolymer 18g of styrene and maleic anhydride of weight part, polyoxyethylene sorbitan fatty acid ester 14g, organic hydrocarbon solvent white oil 350g add oil phase container, thermal initiator azobisisovaleronitrile 0.13 g into the oil phase container, start the stirrer, the stirring speed is 100rpm, open the condensation system at the same time, control the temperature in the oil phase container to 15°C.

[0039] Add 330g of deionized water into the water phase container, start the stirrer (stirring speed 200rpm) and condensation system (control temperature 20°C), add monomer component acrylic amine 250g, EDTA 0.14g, stir evenly under low temperature conditions.

[0040]Add the monomer solution in the water phase container to the oil phase system in the oil phase container for emulsification and homogenization for 15 minutes, and the emulsification speed is 9000r / min; when the emulsification is complete, pour the emulsion into the reaction kettle. Turn on the coo...

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Abstract

The invention provides a method for preparing a non-ionic polyacrylamide emulsion. The method comprises the steps of: (1) mixing 15-30 parts by weight of stabilizing agent, 10-15 parts by weight of emulsifying agent and 300-500 parts by weight of organic hydrocarbon solvent, adding 0.1-0.15 part by weight of thermal initiator, and stirring uniformly; (2) uniformly mixing 200-400 parts by weight of deionized water, 200-400 parts by weight of monomer and 0.1-1 part by weight of chelating agent, wherein the monomer is acrylamide; (3) emulsifying and homogenizing; (4) carrying out emulsification, homogenization, nitrogenization and deoxidation for 2-3 hours; and (5) adding 0.05-0.1 part by weight of initiator in 3 to 5 batches until the reaction temperature rises to the highest and keeps constant, and carrying out heat preservation for 15-30 minutes. According to the method, quick-dissolving polyacrylamide emulsion products with high concentration and good stability can be prepared by adopting an inverse emulsion polymerization process that the stabilizing agent and the emulsifying agent are used in a compounding manner, and high-concentration polyacrylamide emulsions of different molecular weights can be obtained through adjusting a synthesis process.

Description

technical field [0001] The invention belongs to the field of preparation of organic polymer compounds, and in particular relates to a method for preparing an acrylamide polymer and a prepared product. Background technique [0002] Nonionic polyacrylamide is a water-soluble polymer or polyelectrolyte. Because its molecular chain contains a certain number of polar groups, it can absorb solid particles suspended in water to bridge between particles or agglomerate particles to form large flocs through charge neutralization. Therefore, it can accelerate the settling of particles in the suspension, and has a very obvious effect of accelerating solution clarification and promoting filtration. It is widely used in the flocculation and sedimentation of various industrial wastewater, sedimentation clarification treatment, such as wastewater treatment in the paper industry, mineral processing and metal smelting industries, etc. In order to meet the needs of consumers for higher perfo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F120/56C08F2/32
Inventor 杨开吉郭文礼徐青林
Owner BEIJING HENGJU CHEM GRP
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