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Phosphorylated polymerization polymer dispersant and its preparation method

A technology of polymer dispersant and phosphate ester, applied in chemical instruments and methods, botanical equipment and methods, biocides, etc., can solve problems such as poor dispersion effect, improve ionization degree and hard water resistance, and improve The effect of dispersion performance

Active Publication Date: 2013-05-08
中化化工科学技术研究总院有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, polymeric polymer dispersants are generally polycarboxylate dispersants, and there are carboxylate ions in its molecules. Since carboxylate particles are weak particles, the dispersion effect is not good in hard water with more calcium and magnesium ions.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] A phosphated polymeric polymer dispersant, the comonomer composition and material percentages are: phosphated hydroxyethyl methacrylate 5.0%, methacrylic acid 95.0%.

[0012] The preparation method of this dispersant is:

[0013] (1) Add 5.0g of ethanol into a 250mL reactor, stir and wash it, let it go, heat and evaporate to dryness, take out the moisture in the reactor, add 13.0g (0.10mol) hydroxyethyl methacrylate into the reactor, Raise the temperature to 35°C, add 17.0g (0.12mol) phosphorus pentoxide in 17 times under vigorous stirring, the addition time is controlled at 1.5h, after the addition is completed, raise the temperature to 60°C, and react for 2.0h Add methacrylic acid into the reactor and stir evenly; (2) Add 205.0g of water and 10.0g of isopropanol into a 1000mL reactor, raise the temperature to 95°C, and dropwise add the above monomer mixture and 193.6g of 5.0% super Ammonium sulfate aqueous solution, dropwise for 2.0h, continue to react for 3.0h; (3) ...

Embodiment 2

[0020] A phosphated polymeric polymer dispersant, the comonomer composition and material percentages are: 25.0% phosphated hydroxypropyl methacrylate, 75.0% methacrylic acid.

[0021] The preparation method of this dispersant is:

[0022] (1) Add 4.0g of isopropanol into a 250mL reactor, stir and wash it, let it go, heat and evaporate to dryness, take out the moisture in the reactor, and add 36.04g (0.25mol) of hydroxypropyl methacrylate into the reactor In the middle, the temperature was raised to 35°C, and 42.58g (0.30mol) of phosphorus pentoxide was added in 25 times under vigorous stirring, and the addition time was controlled at 2.0h. mol) methacrylic acid was added to the reactor and stirred evenly; (2) 180.0g water and 1.0g thioglycolic acid were added to a 1000mL reactor, the temperature was raised to 85°C, and the above monomer mixture and 103.0g 8.0% Aqueous solution of ammonium persulfate. The dropping time is 1.8h, and the reaction is continued for 3.0h; (3) Afte...

Embodiment 3

[0028] A phosphated polymeric polymer dispersant, the comonomer composition and material percentages are: 50.0% phosphated hydroxypropyl acrylate, 5.0% maleic anhydride, and 45% acrylic acid.

[0029] The preparation method of this dispersant is:

[0030] (1) Add 4.5g of isopropanol into a 250mL reactor, stir and wash, let it go, heat and evaporate to dryness, take out the moisture in the reactor, add 65.07g (0.50mol) of hydroxypropyl acrylate into the reactor, Raise the temperature to 35°C, add 85.16g (0.60mol) phosphorus pentoxide in 30 times under vigorous stirring, and control the addition time at 3.0h. Anhydride and 32.43g (0.45mol) acrylic acid were added to the reactor and stirred evenly; (2) 330.0g water and 8.0g sodium bisulfite were added to a 1000mL reactor, the temperature was raised to 90°C, and the above monomers were added dropwise to it at the same time The mixture and 90.0g of 10.0% ammonium persulfate aqueous solution were added dropwise for 3.0 hours, and t...

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PUM

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Abstract

The invention belongs to the polymer synthesis field and concretely relates to a phosphorylated polymerization polymer dispersant and its preparation method. The dispersant is characterized in that the dispersant comprises 5.0-100.0% by mole of a phosphorylated polymerization monomer and 0-95.0% by mole of other unsaturated copolymerization monomers, and the preparation method of the dispersant comprises a step of the synthesis of the phosphorylated polymerization monomer and a step of the copolymerization of the phosphorylated polymerization monomer with the other monomers. The introduction of phosphate radicals in the dispersant improves the hard water resistance and the dispersion suspension performance of the dispersant.

Description

technical field [0001] The invention belongs to the field of polymer material synthesis, and in particular relates to a phosphated polymerized polymer dispersant and a preparation method thereof. Background technique [0002] Dispersant is a kind of surfactant with hydrophilic group and lipophilic group. It is a substance that can prevent the aggregation of solid or liquid particles in the dispersion system. It has been widely used in food, pesticides, coatings, dyes, construction and other fields. . The reason why the dispersant can prevent particle aggregation is mainly because its lipophilic group is adsorbed on the surface of the particle, and the particle is wrapped by the dispersant, and electrostatic repulsion, steric hindrance, etc. are generated between the particles to maintain stability. It can be seen that the hydrophilic group of the dispersant plays a vital role in particle stabilization. At present, polymeric polymer dispersants are generally polycarboxylate...

Claims

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Application Information

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IPC IPC(8): B01F17/52B01F17/14B01F17/42A01N25/30A01N25/14C08F230/02C08F220/06C08F222/06C08F212/14C09K23/52C09K23/14C09K23/42
Inventor 卢忠利张宗俭刘宁仲晓萍
Owner 中化化工科学技术研究总院有限公司
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