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Production method of glycine diacetic acid derivative chelating agent and production device thereof

A technology of glycine diacetic acid and its production method, which is applied in chemical instruments and methods, preparation of organic compounds, preparation of cyanide reaction, etc., to achieve the effects of less by-products, low device cost and single structure

Pending Publication Date: 2020-09-04
曹清清
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a novel chelating agent production method and production device to solve the problems of manual operation and multi-step reaction in the prior art

Method used

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  • Production method of glycine diacetic acid derivative chelating agent and production device thereof
  • Production method of glycine diacetic acid derivative chelating agent and production device thereof
  • Production method of glycine diacetic acid derivative chelating agent and production device thereof

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Experimental program
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Effect test

Embodiment 1

[0048] The invention discloses a production method of a glycine diacetic acid derivative chelating agent, comprising the following steps:

[0049] Raw material A uses methylglycine; haloacetate uses sodium chloroacetate; alkali uses sodium hydroxide.

[0050] Step 1, mix 1 mol of raw material A with water, then add 0.8 mol of sodium hydroxide to mix and stir evenly, then add 2.1 mol of sodium chloroacetate and stir evenly;

[0051] Step 2: adjust the pH value to 9.5-10.5, and stir for 32 hours under the condition of 55°C-100°C to obtain the product methylglycine diacetate chelating agent.

[0052] The present invention also discloses a production device for the glycine diacetic acid derivative chelating agent, including a reaction device 1, a temperature adjustment device 2, a detection device 3, and a liquid feeding device 4;

[0053] Described reaction device 1 comprises reactor 11, stirrer 12, and described reactor 11 is provided with solid feed port 111, liquid feed port ...

Embodiment 2-3

[0070] Embodiment 2-3 still adopts the method used in Embodiment 1, only the selection of raw materials and the selection of reaction conditions are changed, and the specific scheme is shown in Table 1-3.

[0071] Table 1 embodiment 2-3 raw material selection table

[0072] Example raw material A Haloacetic acids and / or haloacetates 2 Glycine Sodium Chloroacetate 3 monosodium glutamate Potassium chloroacetate

[0073] Table 2 embodiment 2-3 reaction condition table

[0074]

[0075] Table 3 embodiment 1-3 product glycine diacetic acid derivative chelating agent structural formula list

[0076]

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PUM

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Abstract

The invention belongs to the technical field of chelating agents, and particularly relates to a production method of a glycine diacetic acid derivative chelating agent, which comprises the following steps: 1. mixing a raw material A with water, adding haloacetic acid and / or haloacetate and alkali into a mixed solution, and uniformly stirring; 2, adjusting the pH value to be 6-13, stirring is conducted for 6-48 h under the heating condition, and obtaining a product mixed solution. The method has the beneficial effects that industrial raw materials which are widely industrialized and produced inlarge scale are used as main raw materials, the raw materials are simple and easily available and the production cost is low; one-step synthesis is realized, and the synthesis process is simple; reaction conditions are mild, and industrial production is easy; water is used as a solvent, and no organic solvent is used, treated and discharged. The reaction products are single in structure, and no by-products or few by-products are produced. The reaction device is simple, free of high pressure and over-high temperature, low in material requirement and low in device cost.

Description

technical field [0001] The invention belongs to the technical field of chelating agents, and in particular relates to a production method and a production device of a glycine diacetic acid derivative chelating agent. Background technique [0002] Chelating agents currently have a broad application space. Among them, glycine diacetic acid and its derivatives, as new chelating agents, have the characteristics of small toxic and side effects and easy degradation. Because of this, this series of chelating agents are widely used in agriculture, printing and dyeing, washing and other fields. [0003] The production methods of the existing methods all produce a series of isomer by-products, which are difficult to purify. This causes the raising of production cost, has hindered the application of this series of chelating agents. [0004] Based on this, the present invention provides a new synthesis method, which can obtain products in the next step under mild conditions of normal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C227/18C07C227/40C07C229/16B01J19/18
CPCC07C227/18C07C227/40B01J19/18C07C229/16
Inventor 曹清清
Owner 曹清清