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Process for preparing acrylic amide-acrylic sodium polymer nano particle micro emulsion

A technology of sodium acrylate and acrylamide, which is applied in the field of preparation of acrylamide-sodium acrylate polymer nanoparticle microemulsion, which can solve the problems of cost of fish-eye-shaped insoluble matter, slow powder dissolution rate, complicated preparation process, etc., and achieve low cost , short production cycle and simple preparation system

Inactive Publication Date: 2006-11-08
陈尔凡
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] These methods have certain effects, but they cannot effectively solve the problems of emulsion stability, low product molecular weight, complicated preparation process, slow powder dissolution rate, easy formation of fish-eye insoluble matter and high cost, and are difficult to meet the needs of practical applications.

Method used

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  • Process for preparing acrylic amide-acrylic sodium polymer nano particle micro emulsion

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preparation example Construction

[0028] Preparation process route of the present invention:

[0029] (1) Preparation of monomer aqueous solution: after acrylic acid (AA) is neutralized into sodium acrylate (SA) with sodium hydroxide, the monomer aqueous solution of required concentration is prepared according to the mass ratio of SA and AM;

[0030] (2) Prepare emulsifier solution: dissolve the emulsifier in mineral spirits, and fully emulsify for 30 minutes under slow stirring;

[0031] (3) Microemulsion polymerization: Slowly add the aqueous monomer solution dropwise into the emulsifier solution (30-45°C water bath), at a certain stirring speed, blow nitrogen to drive oxygen, and after blowing nitrogen at a constant temperature for 1 hour, add the required amount of initiator Agent (NH)4S2O8 and NaHSO3, under the protection of nitrogen, initiate polymerization at 40°C, and react for about 1 hour to obtain a transparent AM-SA polymer nanoparticle microemulsion;

[0032] (4) Preparation of powder: after the ...

Embodiment 1

[0036] In the four-necked flask that thermometer, reflux condenser, nitrogen conduit and dropping funnel are equipped with, add 500g kerosene, then add Span80 emulsifier 39.60g, Tween60 emulsifier 20.40g (HLB8.0) and be dissolved in kerosene, in collection Fully emulsify for 30 minutes under slow stirring under a hot magnetic stirrer; add 61.5g AA and dissolve in 200g of 20% sodium hydroxide deionized aqueous solution, and neutralize into SA; add 123g of AM again to make monomer aqueous solution (AM:SA = 2:1); Slowly add the aqueous monomer solution dropwise into the emulsifier solution (30-45°C water bath), at a certain stirring speed, blow nitrogen to drive oxygen, and after blowing nitrogen at constant temperature for 1 hour, add 0.9% of the total amount of monomer ‰ initiator (NH)4S2O8 0.0874g and NaHSO3 0.0786g (1:0.9), under the protection of nitrogen to initiate polymerization, the initiation reaction is carried out at 40°C, and the reaction is about 1h to obtain transpa...

Embodiment 2

[0039] The preparation process route is the same as in Example 1, only the components of the reaction system are changed.

[0040] Change the consumption of composite emulsifier (the amount of emulsifier is 10% of the total mass of the oil phase) and the HLB value (being 9.6), that is, Span80 emulsifier 25g, Tween60 emulsifier 25g are dissolved in 500g kerosene, under the heat collecting magnetic stirrer Fully emulsified for 30 minutes under slow stirring; 36.9gAA was dissolved in 200 g of 12% sodium hydroxide deionized aqueous solution, and neutralized into SA; then added 147.6gAM (AM:SA=4:1) to make monomer aqueous solution; Add the aqueous monomer solution dropwise to the emulsifier solution, add 0.3‰ of the total amount of the monomer (NH)4S2O8 0.0326g and NaHSO30.0228g (1:0.7), initiate the reaction at 40°C, and react for about 1h, that is A transparent AM-SA polymer nanoparticle microemulsion was obtained. The amount of emulsifier is 10% of the total mass of the oil pha...

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Abstract

The preparation process of nanometer microemulsion of acrylamide-sodium acrylate polymer relates to preparation of one kind of new material used in oil production, water treatment, papermaking, textile, printing and dyeing, special paint, adhesive and ink. The process is one reverse microemulsion polymerization process of acrylamide and sodium acrylate as copolymerized monomers, and with composite emulsifier, solvent oil and water as dispersing medium and redox initiation system. The product of the present invention is used widely in oil production, water treatment, papermaking, textile, printing and dyeing, special paint, adhesive, ink and other fields.

Description

technical field [0001] The present invention relates to a material preparation method, in particular to a preparation method of acrylamide-sodium acrylate polymer nanoparticle microemulsion, which is widely used in oil extraction, water treatment, papermaking, textile, printing and dyeing, special coatings, adhesives, inks and Sugar and other fields. Background technique [0002] Acrylamide homopolymers and copolymers are widely used water-soluble polymer materials. The main polymerization methods include aqueous solution polymerization, inverse emulsion polymerization and inverse microemulsion polymerization. The products are dry powder, emulsion, microemulsion or latex. [0003] Due to the limitation of process conditions, the solid content in the aqueous solution polymerization product is low, and imidization reaction easily occurs to form gel, and high molecular weight acrylamide homopolymer and copolymer products cannot be obtained. [0004] Acrylamide homopolymers an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/56C08F2/22C08F4/40C08F220/06
Inventor 陈尔凡
Owner 陈尔凡
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