A kind of preparation method of anionic polyacrylamide emulsion and prepared emulsion

A technology of polyacrylamide and anion, which is applied in the field of organic polymer compound preparation, can solve the problems of inconvenient use for transportation customers, poor storage stability (generally 3 to 6 months, harsh working environment, etc.), to maintain technology and products Leading position, expansion of foreign market holdings, effects of important economic and social benefits

Active Publication Date: 2015-08-19
BEIJING HENGJU CHEM GRP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The polyacrylamide powder products in the prior art have defects such as time-consuming and labor-intensive dissolution, harsh working environment, slow dissolution speed, and huge dissolution equipment, which makes the foreign market gradually shift from powder products to emulsion products, but the traditional reverse phase The PAM emulsion product obtained by emulsion polymerization has extremely poor stability and cannot meet the needs of users
At present, the concentration of polyacrylamide emulsion sold in the market is generally low (30-40%), and the storage stability is poor (generally 3 months to 6 months, there will be stratification), which brings great inconvenience to transportation and customer use.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Add 20 g of vinylpyrrolidone and vinyl acetate copolymer (Shanghai Yuang Chemical Technology Development Co., Ltd.), 15 g of polyoxyethylene sorbitan fatty acid ester, and 350 g of organic hydrocarbon solvent gasoline into the oil phase container, and heat the initiator Add 0.05 g of potassium sulfate into the oil phase container, start the stirrer, the stirring speed is 100 rpm, and simultaneously open the condensation system, and control the temperature in the oil phase container to be 15°C.

[0029] Add 344g of deionized water into the water phase container, start the agitator (stirring speed 200rpm) and condensation system (control temperature 20°C), add 250g of monomer components acrylic amine and 0.5g of EDTA, and stir evenly under the low temperature condition . 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; wh...

Embodiment 2

[0032] Add 28g of vinylpyrrolidone and vinyl acetate copolymer, 15g of polyoxyethylene sorbitan fatty acid ester, 380g of organic hydrocarbon solvent kerosene into the oil phase container by weight parts, add 0.08g of thermal initiator in the oil phase container, Start the stirrer at a stirring speed of 100 rpm, and at the same time turn on the condensation system to control the temperature in the oil phase container to 15°C. Add 352g of deionized water into the water phase container, start the agitator (stirring speed 200rpm) and condensation system (control temperature 20°C), add monomer components acrylic amine 250g, EDTA0.5g, and stir evenly under low temperature conditions. 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 completed, pour the emulsion into the reaction kettle. Turn on the cooling...

Embodiment 3

[0035] Add 18 g of vinylpyrrolidone and vinyl acetate copolymer, 13 g of polyoxyethylene sorbitan fatty acid ester, and 350 g of organic hydrocarbon solvent into the oil phase container, add 0.03 g of thermal initiator into the oil phase container, start the stirrer, The stirring speed was 100 rpm, and at the same time, the condensation system was turned on, and the temperature in the oil phase container was controlled to 15°C. Add 344g of deionized water into the water phase container, start the stirrer (stirring speed 200rpm) and condensation system (control temperature 20°C), add 250g of monomer components acrylic amine and 0.5g of EDTA, and stir evenly at low temperature.

[0036]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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PUM

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Abstract

The invention provides a preparation method of an anionic polyacrylamide emulsion, which comprises the following steps: 1) mixing 10-30 parts by weight of high-polymer stabilizer, 10-20 parts of emulsifier and 300-400 parts of organic hydrocarbon solvent; 2) adding 0.01-0.1 part of thermal initiator, and stirring uniformly; 3) mixing 200-400 parts of deionized water, 100-400 parts of monomer and 0.1-1 part of chelator; 4) emulsifying and homogenizing; 5) deoxidizing the emulsified and homogenized emulsion by nitrogen charging for 2-3 hours; and 6) adding 0.01-0.05 part of initiator until the temperature of the reaction mixture increases to a constant value, and keeping the temperature for 15-30 minutes. The reversed phase emulsion polymerization technique of combining the stabilizer and emulsifier can be used for preparing a high-concentration high-stability instant polyacrylamide emulsion product; and in addition, the synthesis technique can be adjusted to obtain the high-concentration anionic polymer emulsion with different molecular weights and different ion degrees.

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] At present, how to further increase the molecular weight of anionic polyacrylamide is being studied at home and abroad to meet the needs of consumers for higher molecular weight products. Although there have been some reports on the development direction of this kind of polymer at home and abroad, due to the poor stability of the product, it is still in the laboratory research stage and has not been industrialized or applied. Because the concentration of anionic polyacrylamide emulsion sold in the market is generally low, the molecular weight is low, and the storage stability is poor, which brings great inconvenience to transportation and customer use. [0003] In patent CN101029107A, anionic polyacrylamide powder is prepared by composite initiati...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L33/26C08L33/06C08L33/24C08F120/56C08F120/06C08F120/58C08F2/32
Inventor 郭文礼杨开吉徐青林
Owner BEIJING HENGJU CHEM GRP
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