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Hydrophobically associating dimethyl diallyl ammonium chloride cation flocculating agent and preparation method thereof

A technology of dimethyl diallyl ammonium chloride and cationic flocculants, which is applied in the chemical industry, can solve problems such as not being able to meet the requirements of sewage treatment, and achieve low production costs, stable performance, and environmental friendliness

Inactive Publication Date: 2014-11-26
DALIAN RES & DESIGN INST OF CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Due to the development of modern industry and the improvement of living standards, the content of organic matter in drainage has greatly increased, and the existing flocculants can no longer meet the requirements of sewage treatment.

Method used

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  • Hydrophobically associating dimethyl diallyl ammonium chloride cation flocculating agent and preparation method thereof
  • Hydrophobically associating dimethyl diallyl ammonium chloride cation flocculating agent and preparation method thereof
  • Hydrophobically associating dimethyl diallyl ammonium chloride cation flocculating agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Weigh 270 g of 65% DMDAAC solution, 13.00 g of 1% disodium ethylenediamine tetraacetate, 1.68 g of ammonium persulfate and 7.82 g of deionized water in 1000 ml with four ports equipped with mechanical stirring, thermometer, condenser tube and nitrogen inlet In the flask, nitrogen was passed through to remove oxygen for 30 minutes under stirring, and the reaction was carried out at 45°C and 55°C for 3 hours respectively, and then at 70°C for 24 hours, and an appropriate amount of deionized water was added to the discharge. The solid content is 39.97%, [η]=0.98 dL / g of the unrefined sample, M=15.12×10 4 , [η]=1.02 dL / g of refined sample, M=16.12×10 4 .

Embodiment 2

[0032]Put 270.00 g of 65% DMDAAC solution, 15.50 g of vinyl isobutyl ether, and 13.00 g of 1% disodium edetate in a 1000 ml four-necked flask equipped with mechanical stirring, thermometer, condenser tube and nitrogen inlet, and stir After deoxygenation with nitrogen for 30 min, add 15.00 g of 1% V-50 solution and heat to 50 °C, react at this temperature for 6 h, and then react at 75 °C for 20 h, adding an appropriate amount of water to control the viscosity of the system , The solid content of the final product is 40.0%. Kinematic viscosity at 25°C > 60000 mpa s, intrinsic viscosity [η] of the product is 1.01 dL / g, M=15.83×10 4 , [η]=1.06 dL / g, M=17.05×10 4 .

Embodiment 3

[0034] Mix 90.00 g of 65% DMDAAC solution, 2.86 g of diethylene glycol divinyl ether, 3.60 g of 1% disodium edetate, and 0.18 g of ammonium persulfate in 250 ml with mechanical stirring, thermometer, condenser and nitrogen In the imported four-neck flask, after stirring with nitrogen for 30 min, add 5.80 g of 1% sodium bisulfite solution and heat to 45 °C, react at this temperature for 6 h, and then react at 75 °C for 20 h , during which an appropriate amount of water is added to regulate the viscosity of the system, and the solid content of the final product is 33.5%. The intrinsic viscosity [η] of the product is 0.77 dL / g, M=10.57×10 4 , the [η] of the refined sample is 0.79 dL / g, M=10.98×10 4 .

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Abstract

The invention relates to a hydrophobically associating dimethyl diallyl ammonium chloride cation flocculating agent and a preparation method thereof, which concretely relates to a copolymer by taking dimethyl diallyl ammonium chloride as a main body. According to the invention, a hydrophobic group is introduced in a main chain of poly-dimethyl diallyl ammonium chloride, interacting effect of an organic matter in the flocculating agent and sewage can be increased, performance of the flocculating agent is increased, by adding an auxiliary agent, the fluidity and stability of the product can be increased. The prepared cation flocculating agent is in a liquid state, and has the advantages of low production cost, fast dissolving speed, friendly environment, energy saving and consumption reduction, convenient use and stable performance.

Description

[0001] technical field [0002] The present invention relates to hydrophobic association cationic flocculant and its preparation. It specifically relates to the copolymerization reaction of dimethyl diallyl ammonium chloride and hydrophobic monomers, and the prepared copolymer is mainly used in the fields of water treatment, oil extraction and the like, and belongs to the technical field of chemical industry. [0003] Background technique [0004] Diallyl quaternary ammonium salt polymer, mainly the homopolymer of dimethyl diallyl ammonium chloride (DMDAAC) and its copolymer with acrylamide (AM), acrylic acid, etc., due to the high positive charge density, Good water solubility, high efficiency and non-toxicity, low price and other advantages, it has been widely used in the fields of water treatment, oil exploration, daily chemical industry, sterilization and algae killing and anticorrosion. According to incomplete statistics, in 2006, the global sales volume of polydimeth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F226/02C08F216/18C08F216/12C08F216/20C02F1/56
Inventor 高玉荣陈曲
Owner DALIAN RES & DESIGN INST OF CHEM IND
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