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Hydrophobic associated anionic polyacrylamide water-in-water emulsion and preparation method thereof

A technology of polyacrylamide and water-in-water emulsion, which is applied in the field of water-soluble polymer synthesis, can solve the problems such as hydrophobic association without mentioning, and achieve the effects of reducing dust pollution, good salt tolerance, and high content of active substances

Inactive Publication Date: 2015-03-11
SHENGLI OILFIELD SHENGLI CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the invention mentions the use of hydrophobic monomers, the patent does not mention hydrophobic associations

Method used

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  • Hydrophobic associated anionic polyacrylamide water-in-water emulsion and preparation method thereof
  • Hydrophobic associated anionic polyacrylamide water-in-water emulsion and preparation method thereof
  • Hydrophobic associated anionic polyacrylamide water-in-water emulsion and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Into a 500mL four-necked flask equipped with stirring, nitrogen tube and thermometer, add 190.51g of deionized water, start stirring, add 52.19g of acrylamide, 3.74g of 2-acrylamido-2-methylpropanesulfonic acid, 14.63g of acrylic acid g.AMC 12 S1.44g, 17.18g of 25% sodium hydroxide aqueous solution was added, and the pH value was adjusted to between 4-5, and then 75.66g of ammonium sulfate, 25.20g of anion stabilizer, and 0.02g of disodium edetate were added. Raise the temperature to 30-33°C with a water bath, pass nitrogen for 30 minutes, add 0.022g of sodium bisulfite, stir for 5 minutes, add 0.042g of ammonium persulfate, add 0.042g of ammonium persulfate for 12 hours, react for 20 hours, add 19.47 g of ammonium sulfate was poured after stirring for 30 minutes. Measure its intrinsic viscosity 650mL / g.

Embodiment 2

[0034] Into a 500mL four-necked flask equipped with stirring, nitrogen tube, and thermometer, add 190.51g of deionized water, start stirring, add 52.19g of acrylamide, 3.12g of 2-acrylamido-2-methylpropanesulfonic acid, 14.53g of acrylic acid g.AMC 12 S2.06g, 17.18g of 25% sodium hydroxide aqueous solution was added, and the pH value was adjusted to between 4-5, then 70.66g of ammonium sulfate, 30.20g of anion stabilizer, and 0.02g of disodium edetate were added. Raise the temperature to 30-33°C with a water bath, pass nitrogen for 30 minutes, add 0.022g of sodium bisulfite, stir for 5 minutes, add 0.042g of ammonium persulfate, add 0.042g of ammonium persulfate for 12 hours, react for 20 hours, add 19.47 g of ammonium sulfate was poured after stirring for 30 minutes. Measure its intrinsic viscosity 612mL / g.

Embodiment 3

[0036] Into a 500mL four-necked flask equipped with stirring, nitrogen tube and thermometer, add 190.51g of deionized water, start stirring, add 52.19g of acrylamide, 3.74g of 2-acrylamido-2-methylpropanesulfonic acid, 14.63g of acrylic acid g.AMC 16 S1.44g, 17.18g of 25% sodium hydroxide aqueous solution was added, and the pH value was adjusted to between 4-5, and then 75.66g of ammonium sulfate, 25.20g of anion stabilizer, and 0.02g of disodium edetate were added. Warm up to 30-33°C with a water bath, pass nitrogen gas for 30 minutes, add 0.022g sodium bisulfite, stir for 5 minutes, add 0.042g ammonium persulfate, add 0.042g ammonium persulfate for 12 hours, react for 20 hours, add 19.47 g of ammonium sulfate was poured after stirring for 30 minutes. Measure its intrinsic viscosity 630mL / g.

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Abstract

The invention discloses a hydrophobic associated anionic polyacrylamide water-in-water emulsion and a preparation method thereof. The hydrophobic associated anionic polyacrylamide water-in-water emulsion is prepared by initiating and polymerizing a water solution system which comprises inorganic salt, nonionic monomers, anionic monomers, hydrophobic monomers, a stabilizer, a chelating agent and deionized water through an initiating agent. The hydrophobic associated anionic polyacrylamide water-in-water emulsion can be quickly dispersed and dissolved in water, has a high viscosity-enhancing capability and a high salt-resistant capability, and has a wide application prospect in the oil and gas exploitation field.

Description

technical field [0001] The invention relates to the technical field of water-soluble polymer synthesis, in particular to a hydrophobic association anionic polyacrylamide water-in-water emulsion and a preparation method thereof. Background technique [0002] Polyacrylamide is known as "all-industry additive" and is widely used in water treatment, paper industry, petroleum industry and other fields, but it has disadvantages such as easy shear degradation and poor temperature and salt resistance during use. Hydrophobic association is an important direction to overcome these shortcomings. Hydrophobic association polyacrylamide refers to a water-soluble polymer with a small amount of hydrophobic groups on the hydrophilic macromolecular chain, and its solution has unique properties. In aqueous solution, the hydrophobic groups of such polyacrylamides aggregate due to hydrophobic interactions, resulting in intramolecular and intermolecular associations of macromolecular chains. Wh...

Claims

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Application Information

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IPC IPC(8): C08F220/56C08F220/58C08F220/06C08F2/22
Inventor 冯玉军张云山刘长胜张嵩刘萍
Owner SHENGLI OILFIELD SHENGLI CHEM
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