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Humic acid-based polymer as well as preparation method and application thereof

A polymer, humic acid technology, applied in chemical instruments and methods, chemical/physical processes, transportation and packaging, etc., can solve problems such as poor stability of dispersion systems, achieve short production cycle, wide source, good temperature resistance and resistance. salty effect

Inactive Publication Date: 2014-12-03
山东川成医药有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004]Humic acid is a mixture of macromolecular multi-substituted aromatic phenolic carboxylic acids with different molecular weights and structures. Dispersion performance and other characteristics, when used alone, due to the poor stability of the dispersion system, it is not well used in the field of dispersants

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] One, the preparation of humic acid-based graft polymer, the steps are as follows:

[0036] Add 5.0 g of sodium humate, 2.5 g of isopropanol, and 60 ml of water into a three-neck flask equipped with a thermometer, a stirrer, and a constant pressure dropping funnel, turn on the electric stirrer, and heat in a constant temperature water bath. The temperature was raised to 65°C, and a mixed aqueous solution of 15g of acrylic acid and 5g of sodium methallylsulfonate (the two monomers were dissolved in 20ml of water) was started dropwise, and the dropwise addition was completed in about 0.5 hours. While adding the mixed aqueous solution dropwise, the initiator aqueous solution (2.5g of ammonium persulfate dissolved in 20ml of water) was started dropwise, and the dropwise addition was completed in about 1 hour. The temperature was raised to 75° C., and the reaction was kept for 3 hours. After the solution is cooled below 30°C, add dropwise a 35% sodium hydroxide solution to a...

Embodiment 2

[0053] Add 2.5 g of sodium humate, 2.5 g of sodium bisulfite, and 60 ml of water into a three-neck flask equipped with a thermometer, a stirrer, and a constant pressure dropping funnel, turn on the electric stirrer, and heat in a constant temperature water bath. The temperature was raised to 65°C, and a mixed aqueous solution of 17.5 g of maleic anhydride and 5 g of sodium methallylsulfonate (the two monomers were dissolved in 20 ml of water) was started dropwise, and the dropwise addition was completed in about 1 hour. While adding the mixed aqueous solution dropwise, the initiator aqueous solution (1.25g of ammonium persulfate dissolved in 20ml of water) was started dropwise, and the dropwise addition was completed in about 1.5 hours. The temperature was raised to 70° C., and the reaction was kept for 3 hours. After the solution is cooled below 30°C, add dropwise a 35% sodium hydroxide solution to adjust the pH to 7-8. The solution is dried in a constant temperature oven (a...

Embodiment 3

[0056] Add 7.5g of sodium humate, 1.25g of sodium bisulfite, and 60ml of water into a three-necked flask equipped with a thermometer, a stirrer, and a constant pressure dropping funnel, turn on the electric stirrer, and heat in a constant temperature water bath. The temperature was raised to 65°C, and a mixed aqueous solution of 10 g of methacrylic acid and 7.5 g of sodium vinylsulfonate (the two monomers were dissolved in 20 ml of water) was started dropwise, and the dropwise addition was completed in about 1 hour. While adding the mixed aqueous solution dropwise, the initiator aqueous solution (2.5g of ammonium persulfate dissolved in 20ml of water) was started dropwise, and the dropwise addition was completed in about 1.5 hours. The temperature was raised to 70° C., and the reaction was kept for 3 hours. After the solution is cooled below 30°C, add dropwise a 35% sodium hydroxide solution to adjust the pH to 7-8. The solution is dried in a constant temperature oven (at a t...

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Abstract

The invention discloses a preparation process and application method of a humic acid-based polymer with low production cost and excellent dispersion performance. The humic acid-based polymer is formed by graft polymerization of sodium humate, unsaturated carboxylic acid monomers and sulfonic unsaturated monomers through free radicals. The polymer is strong in adaptability to acidic and alkaline environments and good in temperature resistance and salt resistance, can effectively improve the uniformity and stability of a system, has a very good dispersion effect on iron oxide, titanium dioxide, atrazine and fipronil, and can be widely applied in the fields of industrial circulating water, ceramics, pesticides and the like; moreover, raw materials are simple and easily available, a production process is simple, the production cycle is short, the production principle of green chemistry is satisfied, and very good promotion values are achieved.

Description

technical field [0001] The invention relates to an inorganic powder and a pesticide dispersant and a preparation method thereof, in particular to a humic acid-based polymer, a preparation method and application thereof. Background technique [0002] Polymers are widely used in coatings, plastics, coal water slurry, medicine, papermaking and other fields. The mechanism of action is mainly to increase the steric hindrance by increasing the thickness of the polymer adsorption layer. available in the medium. The research on non-aqueous hyperdispersants is becoming more and more perfect. With the continuous improvement of the country's environmental protection requirements, the research on water-based hyperdispersants is imminent. The main disadvantages of current water-based hyperdispersants are small molecular weight, weak electrostatic repulsion and steric hindrance, poor stability to particles, and the problem of not cheap raw material cost. [0003] CN 103910832 A disclose...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F289/00C08F220/06C08F228/02C08F222/06C08F220/58B01F17/52C09K23/52
Inventor 吴宏坚孟庆亮周艳明闫海英田延红刘怀敬刘怀昌
Owner 山东川成医药有限公司