Method for synthetizing anion type and non-ion type dispersoid for water-soluble polymer

A non-ionic polymer and non-ionic technology, used in the synthesis of anionic and/or non-ionic water-soluble polymer dispersions, can solve the problem of high-viscosity products that have not been reported in the addition of polymers and polyols Separation stability and other issues

Inactive Publication Date: 2004-08-11
王丕新
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, some progress has been made in the research of anionic and nonionic dispersants, such as Japanese patents such as JP 4-39481, JP 3-74682 and JP 6-72170, and U.S. patents US4929655, US5587415 and US5720964. There have been reports on this aspect of research, but the re

Method used

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  • Method for synthetizing anion type and non-ion type dispersoid for water-soluble polymer
  • Method for synthetizing anion type and non-ion type dispersoid for water-soluble polymer
  • Method for synthetizing anion type and non-ion type dispersoid for water-soluble polymer

Examples

Experimental program
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Effect test

Embodiment 1

[0031]In a 500 ml 4-neck round bottom flask equipped with a condenser, thermometer, nitrogen inlet and stirrer, add 77.4 grams of deionized water, 136.6 grams of ammonium sulfate, 17.6 grams of 60% acrylic acid, 189.1 grams of 50% Acrylamide, 2.9 grams of 30% sodium hydroxide to neutralize the anionic monomer of 15 mol%, the copolymer of acrylamide and N,N-dimethylacryloyl of 18.6 grams (3% of the monomer amount) ( Molecular weight is 150,000, concentration 20%), 3.5 gram glycerin (3.2% of monomer weight), be warming up to 25 degree under the condition of stirring, after logical nitrogen 30 minutes, add 0.1 of 2.6 gram ammonium peroxosulfate and sodium sulfite respectively % aqueous solution. After 2.5 hours of reaction, the viscosity of the system can be observed, but with the precipitation of particles, the viscosity of the system no longer increases. After continuing to react for 12 hours, a polymer dispersion was obtained. Particles with a particle diameter of 5-10 micron...

Embodiment 2-4

[0033] The reaction device and operation method were the same as those in Example 1. By changing the molar ratio of acrylic acid monomers to acrylamide monomers as shown in Table 2, a polymer dispersion was synthesized. The results are shown in Table 3.

Embodiment 5

[0035] The reaction apparatus is as in Example 1, adding 57.9 grams of deionized water, 135.4 grams of ammonium sulfate, 14.9 grams of 2-acrylamido-2-methylpropanesulfonic acid, 10.4 grams of 60% concentration of acrylic acid, 173.8 grams of 50% concentration of propylene Amide, 3.8 grams of 30% concentration of sodium hydroxide to neutralize the anionic monomer of 13 mol %, 16.9 grams (3% of the monomer amount) poly N-vinylpyrrolidone (molecular weight is 10,000, concentration 20%), 3.3 Vinyl alcohol (3.0% of the monomer weight) was heated up to 25° C. with stirring, and after 30 minutes of blowing nitrogen, 2.6 g of ammonium peroxosulfate and 0.1% aqueous solution of sodium sulfite were added respectively. After 2.5 hours of reaction, the viscosity of the system can be observed, but with the precipitation of particles, the viscosity of the system no longer increases. After continuing to react for 15 hours, the polymer dispersion was obtained, and particles with a particle di...

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Abstract

A process for synthesizing the anionic and non-ionic water-soluble high-molecular dispersion system features that under the action of the composite disperser composed of more than one non-ionic high-molecular compound soluble in saline and more than one polyol compound, the water-soluble non-ionic monomer and/or water-soluble anionic monomer take part in polymerizing (or copolymerizing) reaction to obtain said dispersion system.

Description

technical field [0001] The invention belongs to the synthesis method of anionic and / or nonionic water-soluble polymer dispersion. Background technique [0002] Anionic water-soluble polymers are widely used as flocculants in many fields. For example, it is used as a general water treatment agent for solid-liquid separation in drainage; combined with cationic flocculant for sludge dewatering; retention aid in paper industry and soil curing agent in civil engineering field, etc. The traditional manufacturing methods of these anionic flocculants are as follows: hydrosol colloid obtained by aqueous solution polymerization; latex body added with hydrophilic emulsification phase inversion agent after polymerization by inverse emulsion method; polymerization by aqueous solution method with 30-50% monomer concentration Afterwards, the powder obtained through granulation and drying processes. Recently, some researchers also proposed a method for synthesizing water-soluble polymers ...

Claims

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Application Information

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IPC IPC(8): C08F2/24C08F16/04
Inventor 王丕新
Owner 王丕新
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