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A kind of quick-dissolving anionic polyacrylamide inverse emulsion and preparation method thereof

A technology of polyacrylamide and inverse emulsion, which is applied in the field of fast-dissolving anionic polyacrylamide inverse emulsion and its preparation, can solve the problems of unresolved dissolution speed improvement, lack of dissolution equipment and platforms, and inconvenient use, and achieve saving The effect of removing the dissolution device and the storage tank, superior and rapid dissolution effect

Active Publication Date: 2020-03-17
JIANGSU FEYMER TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the anionic polyacrylamide emulsion in the prior art has a relatively long dissolution time and poor stability, which brings great inconvenience to the use of oil extraction and mining beneficiation sites that lack dissolution equipment and platforms
[0004] Patent CN103242613A discloses a preparation method of high-concentration anionic polyacrylamide emulsion, which can prepare high-concentration (solid content ≥ 55%) and instant polyacrylamide emulsion products with excellent stability (no delamination for more than 2 years) , but did not solve the technical problem of increasing the dissolution rate
[0005] Patent CN104250342A provides a method for preparing sulfonic acid polyacrylamide emulsion. The obtained sulfonic acid polyacrylamide emulsion has the ability to quickly dissolve with water, but the dissolution time is about 3 minutes, which cannot effectively meet the market for instant dissolving need

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Dissolve 15g of triblock polymer emulsifier HYPERMER B-246SF and 35g of emulsifier Atlas G-2116 in 300g of 3# white oil to make an oil phase;

[0038] Add 227.5g of solid acrylamide, 250g of prepared 42% sodium acrylate aqueous solution and 17.5g of N-vinylpyrrolidone into 130g of deionized water, and stir until the solution is completely dissolved; then add 10g of 5% EDTA-2Na aqueous solution, 1g mass concentration of 1% tert-butyl hydroperoxide aqueous solution, 0.175g sodium formate and 15g urea, stirred the above solution until completely dissolved, and made an aqueous phase;

[0039] Add the prepared water phase to the oil phase dropwise, and stir while adding, and the dropwise addition takes 15 minutes; then the above mixture is ultrasonically emulsified, and the ultrasonic emulsification time is 15 minutes; the temperature of the above mixture is controlled at 10-15°C, and the mixture is at Under the stirring state, pass nitrogen gas into the mixture for 1.5 hour...

Embodiment 2

[0043] Dissolve 15g of emulsifier HYPERMER-SP6 and 35g of emulsifier Atlas G-2141 with a star-shaped hybrid arm structure in 300g of 5# white oil to make an oil phase;

[0044] 227.5g of solid acrylamide, 250g of the prepared 42% sodium acrylate aqueous solution and 35g of 50% 3-acrylamido-3-methylbutyrate aqueous solution were added to 111.5g of deionized water, Stir until the solution is completely dissolved; then add 10 g of 5% DPTA-5Na aqueous solution, 1 g of 1% potassium bromate, 0.175 g of sodium acetate, 10 g of urea and 5 g of thiourea to the above solution, and stir the above solution until completely dissolved to form an aqueous phase;

[0045] Add the prepared water phase dropwise to the oil phase, and stir while adding dropwise. The dropwise addition takes 30 minutes; then the above mixture is ultrasonically emulsified for 15 minutes; the temperature of the above mixture is controlled at 10-15°C, and the mixture is stirred. Nitrogen was passed through the mixture...

Embodiment 3

[0049] Dissolve 18g of triblock polymer emulsifier HYPERMER-1038SF and 32g of emulsifier Atlas G-2076 in 300g of Isopar M to make an oil phase;

[0050] 227.5g of solid acrylamide, 250g of the prepared mass concentration of 42% sodium acrylate aqueous solution and 58g of 50% mass concentration of 2-acrylamido-2-methylpropanesulfonate sodium aqueous solution were added to 89.5g of deionized In water, stir until the solution is completely dissolved; then add 10g of 5% EDTA-2Na aqueous solution, 1g of 1% sodium bromate aqueous solution, 0.175g of thioglycolic acid, 10g of urea and 5g of anhydrous Sodium sulfate, stir the above solution until completely dissolved to make the water phase;

[0051] Add the prepared water phase dropwise to the oil phase, and stir while adding dropwise. The dropwise addition takes 30 minutes; then the above mixture is ultrasonically emulsified for 15 minutes; the temperature of the above mixture is controlled at 10-15°C, and the mixture is stirred. N...

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PUM

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Abstract

The invention relates to a fast-dissolving anionic polyacrylamide inverse emulsion and a preparation method thereof. The preparation method comprises the following steps: (1) preparing an oil phase and a water phase; (2) adding the water phase to the oil phase dropwise Obtaining the water-in-oil pre-emulsion; (3) carrying out nitrogen and deoxygenation to the water-in-oil pre-emulsion; (4) adding an initiator to the water-in-oil pre-emulsion to initiate polymerization; (5) adding a phase inverting agent to the reaction mixture , to obtain fast-dissolving anionic polyacrylamide inverse emulsion. The fast-dissolving ionic polyacrylamide inverse emulsion provided by the invention has a fast dissolving speed, and the dissolving time in water is less than 1 min, which can realize the effect of dissolving immediately after use.

Description

technical field [0001] The invention relates to the technical field of emulsion preparation, in particular to a fast-dissolving anionic polyacrylamide inverse emulsion and a preparation method thereof. Background technique [0002] Polyacrylamide (PAM) and its derivatives can be used as effective flocculants, thickeners, paper strengthening agents and liquid drag reducers, etc., and are widely used in water treatment, papermaking, petroleum, coal, mining, geology, Textile, construction and other industrial sectors. Emulsion-type PAM has attracted widespread attention because of its superior efficacy over solid PAM. The inverse emulsion polymerization method has become a research hotspot in recent years because of its stable polymerization reaction, uniform heat dissipation, high polymerization efficiency, high polymer molecular weight, and fast dissolution rate. With the exploitation of offshore oil, the inverse emulsion polymerization method has received special attention...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/56C08F220/06C08F226/10C08F220/58C08F2/30
CPCC08F2/30C08F220/56C08F220/06C08F220/585C08F220/58
Inventor 戴明明何国锋王勤岳凯刘竹青魏星光
Owner JIANGSU FEYMER TECH
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