Mineral dispersant and preparation method thereof

A dispersant and mineral technology, applied in the field of mineral dispersant and its preparation, can solve the problems of weakened dispersion effect, too many free dispersants, and large volatilization loss, so as to reduce the polydispersity coefficient, improve the system stability, and improve the The effect of dispersing power

Active Publication Date: 2011-08-24
JIANGSU FEYMER TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1) In order to adjust the molecular weight, a large amount of sodium hypophosphite or other phosphorus compounds are used; resulting in eutrophication of the application environment, which is easy to breed algae and cause environmental pollution
[0005] 2) In order to adjust the molecular weight, a large amount of organic solvents such as isopropanol are used, such as patents CN92101664, WO2002049765, etc., which increase the production energy consumption and complexity on the one hand; on the other hand, the volatilization loss is relatively large when the solvent is recovered and applied mechanically, which is unfavorable to the environment; , the organic matter remaining in the dispersant will enter the downstream application system with the dispersant and have a negative impact
[0006] 3) In order to adjust the molecular weight, the patent CN200610098170 uses mercaptoethanol, and mercaptoethanol has safety and stability problems, so it cannot be popularized and used basically
[0007] 4) Unreasonable configuration of active groups, poor application effect and loss of function
In addition, -

Method used

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  • Mineral dispersant and preparation method thereof
  • Mineral dispersant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] 1) Preparation of initiator aqueous solution: Weigh 176 kg of ammonium persulfate and dissolve in 352 kg of deionized water.

[0047] 2) Preparation of alkenyl carboxylic acid aqueous solution: Weigh 1000kg of acrylic acid into the reaction kettle, add 100kg of water, start stirring and refrigerated circulating water in the jacket, add 86kg of 32% liquid alkali dropwise, and stir for 30 minutes after the drop is completed.

[0048]3) Put 1200kg of water and 2-hydroxy-3-allyloxy-1-propylsulfonate into a jacketed stainless steel autoclave equipped with a reflux condenser, a pressurized constant-speed injection pump, and a jacketed stainless steel autoclave that can be raised and lowered in temperature Acid 560kg, allyl polyoxyethylene (10) sulfonic acid 1360kg, propylene alcohol 14kg, sealed autoclave. After removing the air by replacing with nitrogen, raise the temperature to 95°C, use two pressurized constant-speed syringe pumps to add the initiator aqueous solution and...

Embodiment 2

[0050] 1) Preparation of initiator aqueous solution: Weigh 122kg of potassium persulfate and dissolve it in 244kg of deionized water.

[0051] 2) Preparation of alkenyl carboxylic acid aqueous solution: Weigh 1300kg of methacrylic acid into the reaction kettle, add 130kg of water, start stirring and the refrigerated circulating water in the jacket, add dropwise 94kg of 32% liquid caustic soda, and stir for 30 minutes after the dropping.

[0052] 3) Put 1200kg of water and 2-hydroxy-3-allyloxy-1-propylsulfonate into a jacketed stainless steel autoclave equipped with a reflux condenser, a pressurized constant-speed injection pump, and a jacketed stainless steel autoclave that can be raised and lowered in temperature 350kg of sodium nitrate, 1400kg of allyl polyoxyethylene (12) sulfonic acid, 12kg of cis-3-hexenol, and a closed autoclave. After removing the air by replacing with nitrogen, raise the temperature to 95°C, use two pressurized constant-speed syringe pumps to add the i...

Embodiment 3

[0054] 1) Preparation of initiator aqueous solution: Weigh 404kg of 50% hydrogen peroxide and dissolve in 202kg of deionized water.

[0055] 2) Preparation of alkenyl carboxylic acid aqueous solution: Weigh 1200kg of acrylic acid into the reaction kettle, add 120kg of water, start stirring and refrigerated circulating water in the jacket, add dropwise 95kg of 32% liquid caustic soda, and stir for 30 minutes after dropping.

[0056] 3) Put 1200kg of water and 2-hydroxy-3-allyloxy-1-propylsulfonate into a jacketed stainless steel autoclave equipped with a reflux condenser, a pressurized constant-speed injection pump, and a jacketed stainless steel autoclave that can be raised and lowered in temperature Acid 480kg, allyl polyoxyethylene (8) ammonium sulfonate 1200kg, 2-methacryl alcohol 6kg, sealed autoclave. After removing the air by replacing with nitrogen, raise the temperature to 95°C, use two pressurized constant-speed syringe pumps to add the initiator aqueous solution and ...

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PUM

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Abstract

The invention discloses a mineral dispersant and a preparation method thereof. The mineral dispersant is an aqueous solution of anionic copolymer, wherein the anionic copolymer is formed by four monomers through free radical polymerization, and neutralized into the mineral dispersant through two different alkaline substances. The mineral dispersant producing process is green and environmentally friendly, the product performance is excellent and stable, the product is easily degraded in the natural world, polydispersity index is lower than 2.2; the mineral dispersant can be used for dispersionof minerals, including mineral grinding dispersion required by industry, water treatment scale dispersion, cement additive and the like.

Description

technical field [0001] The invention relates to a mineral dispersant and a preparation method thereof. Background technique [0002] In the grinding and dispersing of paper-making fillers, the grinding and dispersing of porcelain materials, the water reduction of cement, the anti-scaling of water bodies, the grinding and dispersing of fillers in water-based coatings, etc., a mineral dispersant is required to increase the slurry content during grinding and dispersing. , The system is stable and has good fluidity. During water treatment, it can stabilize the easily scaling substances such as carbonates, phosphates, and silicates in the water body and suspend in the microcrystalline state without depositing in the water body. [0003] This dispersant has relied on acrylic acid homopolymers for a long time to play a leading role. There are also research reports or a small amount of production and sales of various copolymers added with a small amount of functional monomers, but t...

Claims

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Application Information

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IPC IPC(8): B01F17/44B01F17/38C08F220/06C08F216/14C08F216/08C08F290/06C08F216/04C09K23/44C09K23/38
Inventor 李胜兵庄东青冯立鹏
Owner JIANGSU FEYMER TECH
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