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A kind of iminodisuccinic acid chelated metal salt

An iminodisuccinic acid and alloy technology, applied in the field of chelating metal salts and chelating agents, can solve the problems of reducing the content of active ingredients, increasing the risk of storage and transportation, and the corrosion effect of chloride ions, so as to improve the content and utilization rate, The application range is expanded and the safety is good.

Active Publication Date: 2021-05-07
HEBEI THINK DO ENVIRONMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The application of this chelate fertilizer will add unnecessary salt to the soil, such as sulfate, which can easily cause soil calcification and compaction, affecting crop growth; chloride ions have a corrosive effect on equipment, and are not suitable for chlorine-avoiding crops; nitrate has a strong oxidation effect , increase the risk of storage and transportation; in addition, these invalid salts will reduce the content of active ingredients in the product, and increase the cost of packaging, transportation, and use by about 15%.

Method used

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  • A kind of iminodisuccinic acid chelated metal salt
  • A kind of iminodisuccinic acid chelated metal salt
  • A kind of iminodisuccinic acid chelated metal salt

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preparation example Construction

[0031] The preparation method of iminodisuccinic acid chelated metal salt comprises the steps:

[0032] a. After the aqueous solution of iminodisuccinate or iminodisuccinic acid salt with a concentration of 8% to 15% is treated with a strong acid type cation exchange resin, iminodisuccinic acid is obtained;

[0033] b. Add iminodisuccinic acid and raw materials containing metal elements in sequence in a reaction kettle filled with pure water. The molar ratio of iminodisuccinic acid to raw materials containing metal elements is 1:0.25~1, and iminodisuccinic acid When the acid reacts with a certain metal element-containing raw material alone, when the iminodisuccinic acid is 1 equivalent, the copper-containing raw material, magnesium-containing raw material and zinc-containing raw material are 1 equivalent, and the manganese-containing raw material is 0.5 equivalent. The reaction is the most complete when the iron raw material is 0.25 equivalents, and the final mass ratio of the...

Embodiment 1

[0037] A kind of iminodisuccinic acid chelated metal salt, its preparation method is as follows:

[0038] a. After the aqueous solution of iminodisuccinic acid sodium salt with a concentration of 8% is treated with a strong acid type cation exchange resin, iminodisuccinic acid is obtained;

[0039] b. Add iminodisuccinic acid and CuO in sequence in a reactor filled with pure water, the molar ratio of iminodisuccinic acid to CuO is 1:1, the total mass of iminodisuccinic acid and CuO is equal to the mass of water The ratio is 1:5, mix the raw materials thoroughly, heat to 40°C, and react for 2 hours;

[0040] c. Filtrate after the reaction, remove the filter residue, concentrate the liquid part until crystals appear, then centrifuge the water to obtain solid crystals, and dry the crystals to obtain iminodisuccinic acid chelated metal salts.

Embodiment 2～4

[0042] Embodiments 2-4 have the same reaction steps as that of Embodiment 1, and the different types and contents of the reaction raw materials, as well as the different process conditions are shown in Table 1 below. Wherein "concentration" represents the mass concentration of the aqueous solution of iminodisuccinic acid salt or iminodisuccinic acid salt in step a, and "mass ratio" is the total mass of iminodisuccinic acid and the raw material containing metal elements in step b With the mass ratio of water, "temperature" is the temperature heated in step b, and "time" is the reaction time of step b.

[0043] Table 1

[0044]

[0045]

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Abstract

The invention discloses an iminodisuccinic acid chelated metal salt, which belongs to the field of green chemical fertilizers and is used for supplementing metal trace elements to crops or soil, including iminodisuccinic acid or iminodisuccinic acid salt and metal-containing The product of raw material reaction of element, described raw material containing metal element is the mixing of any one or several in metal simple substance, oxide, hydroxide, carbonate or basic carbonate; The present invention can obviously improve The content and utilization rate of active ingredients in chelate fertilizers can be completely metabolized and absorbed by plants, and can also be degraded by soil microorganisms. It has the advantages of high stability, good safety, no environmental residues, and low invalid salt content. It can effectively avoid soil calcification and compaction, and reduce packaging, transportation and use costs.

Description

technical field [0001] The invention relates to a chelating agent, in particular to a chelated metal salt containing metal trace elements, which belongs to the field of green chemical fertilizers and is used for supplementing metal trace elements to crops or soil. Background technique [0002] There are a total of 16 essential elements required for plant growth and development, among which the major elements are carbon, hydrogen, nitrogen, phosphorus, potassium, and the middle and trace elements are calcium, magnesium, sulfur, iron, zinc, manganese, steel, boron, molybdenum ,chlorine. With the development of modern science, the application of chemical fertilizers has made a great contribution to the increase of agricultural production, which has greatly increased the output of agricultural products per unit area. However, the unbalanced fertilization has also led to some crises in modern agriculture, which has a negative impact on environmental resources and human health. s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C227/18C07C229/76C05D3/00C05D5/00C05D9/02
CPCC05D3/00C05D5/00C05D9/02C07C227/18C07C229/76
Inventor 唐量
Owner HEBEI THINK DO ENVIRONMENT CO LTD
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