Chelated metal iminodisuccinate

A technology of iminodisuccinate and iminodisuccinic acid, which is applied in the field of chelating agents and chelated metal salts, can solve the problems of reduced content of active ingredients, corrosion of chloride ions, and increased risk of storage and transportation, and achieves improved Content and utilization rate, reduction of health hazards, and the effect of expanding the scope of application

Active Publication Date: 2018-05-08
HEBEI XIETONG ENVIRONMENTAL PROTECTION TECH 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-avoi

Method used

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  • Chelated metal iminodisuccinate
  • Chelated metal iminodisuccinate
  • Chelated metal iminodisuccinate

Examples

Experimental program
Comparison scheme
Effect test

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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PUM

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Abstract

The invention discloses a chelated metal iminodisuccinate, and belongs to the field of environment-friendly fertilizers. The chelated metal iminodisuccinate is used for supplementing metal trace elements to crops or soil, and comprises a reaction product of iminodisuccinic acid or iminodisuccinate and a metal element-containing raw material, wherein the metal element-containing raw material is oneor a mixture of several of a metal element, oxide, hydroxide, carbonate and basic carbonate. The content and the utilization rate of an active component in a chelated fertilizer can be significantlyincreased; all the contained components can be completely metabolized and absorbed by plants and can also be degraded by soil microorganisms; the chelated metal iminodisuccinate has the advantages ofhigh stability, good safety, no environmental residue and very low ineffective salt component and can effectively avoid soil calcification; packaging, transporting and using costs are reduced.

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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IPC IPC(8): C07C227/18C07C229/76C05D3/00C05D5/00C05D9/02
CPCC05D3/00C05D5/00C05D9/02C07C227/18C07C229/76
Inventor 唐量
Owner HEBEI XIETONG ENVIRONMENTAL PROTECTION TECH CO LTD
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