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Phosphorylated polymerization polymer dispersant and its preparation method

A technology of polymer dispersant and phosphate esterified methallyl alcohol polyoxyethylene ether, which can be used in chemical instruments and methods, botanical equipment and methods, biocides, etc., and can solve problems such as poor dispersion effect and achieve The effect of improving the degree of ionization and resistance to hard water, and improving the dispersion performance

Active Publication Date: 2014-05-14
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 polymerized polymer dispersant, the comonomer composition and the percentage of the substance are: phosphated hydroxyethyl methacrylate 5.0%, and methacrylic acid 95.0%.

[0012] The preparation method of this dispersant is:

[0013] (1) Add 5.0g of ethanol to a 250mL reactor, stir and wash, let it go, heat and evaporate to dryness, take out the water in the reactor, add 13.0g (0.10mol) of hydroxyethyl methacrylate into the reactor, Raise the temperature to 35°C, add 17.0g (0.12mol) phosphorus pentoxide in 17 times under vigorous stirring, control the addition time at 1.5h, after the addition, raise the temperature to 60°C, react for 2.0h, and add 163.6g (1.90mol) Add methacrylic acid to the reactor and stir evenly; (2) Add 205.0g of water and 10.0g of isopropanol into a 1000mL reactor, and heat to 95°C, and add the above monomer mixture and 193.6g of 5.0% ethanol to it simultaneously. Ammonium sulfate aqueous solution, the dropping time is 2.0h, and the reacti...

Embodiment 2

[0020] A phosphated polymerized polymer dispersant, the composition of the comonomer and the percentage of the substance are: 25.0% of phosphated hydroxypropyl methacrylate and 75.0% of methacrylic acid.

[0021] The preparation method of this dispersant is:

[0022] (1) Add 4.0g of isopropanol to the 250mL reactor, stir and wash, let it go, heat to evaporate to dryness, take out the water in the reactor, and add 36.04g (0.25mol) of hydroxypropyl methacrylate to the reactor Add 42.58g (0.30mol) phosphorus pentoxide in 25 times under vigorous stirring. The addition time is controlled at 2.0h. After the addition, the temperature is raised to 70°C, and the reaction is 2.5h. 64.57g (0.75 mol) Add methacrylic acid into the reactor and stir evenly; (2) Add 180.0g of water and 1.0g of thioglycolic acid into a 1000mL reactor, heat to 85℃, and add the above monomer mixture and 103.0g of 8.0% to it simultaneously Aqueous ammonium persulfate solution. The dripping time is 1.8h, and the reac...

Embodiment 3

[0028] A phosphoric acid esterified polymer dispersant, the comonomer composition and material percentage are: phosphorylated hydroxypropyl acrylate 50.0%, maleic anhydride 5.0%, and acrylic acid 45%.

[0029] The preparation method of this dispersant is:

[0030] (1) Add 4.5g of isopropanol to the 250mL reactor, stir and wash, let it go, heat and evaporate to dryness, take out the water 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. The addition time is controlled at 3.0h. After the addition, the temperature is raised to 70°C and reacted for 3h. 4.90g (0.05mol) Anhydride and 32.43g (0.45mol) of acrylic acid were added to the reactor and stirred evenly; (2) 330.0g of water and 8.0g of sodium bisulfite were added to a 1000mL reactor, the temperature was raised to 90℃, and the above monomers were added dropwise to it. Mixture and 90.0g 10.0%...

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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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Patent Type & Authority Patents(China)
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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