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Organic acid stabilizer and preparation of its percarbonateamide

A technology of stabilizer and percarbonate, applied in the field of synthesis of percarbamide

Inactive Publication Date: 2007-09-12
LIAONING NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this important fine chemical product is still in a blank in the industry and needs to be developed and applied urgently.

Method used

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  • Organic acid stabilizer and preparation of its percarbonateamide

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0012] In a 500ml container, add hydrogen peroxide and a corresponding amount of urea, and control the reaction temperature at a certain temperature. After the urea is completely dissolved, add a small amount of stabilizer benzoic acid. When the reaction is about to end, add the less coating agent dodecylsulfonic acid Sodium, stirring for 35 minutes to complete the reaction, cooling the resulting solution with ice-water mixture for 3-4 hours to obtain a white paste liquid, suction filtration to obtain white powder crystals, and drying in a dryer at 30 ° C. That is, the product is obtained. The yield is 77.36%; the active oxygen content is 16.47%.

example 2

[0014] According to the experimental method of example 1. The stabilizer was replaced by tartaric acid. Obtaining product is the same as example 1. The yield is 75.36%; the active oxygen content is 16.20%.

example 3

[0016] According to the experimental method of example 1. The stabilizer was replaced with citric acid. Obtaining product is the same as example 1. The yield is 76.36%; the active oxygen content is 16.40%.

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Abstract

This invention relates to a fine chemical product of percarbonamide, a crystal addition compound of hydrogen peroxide and urea, the outlook of which is white crystal powder , the theory active oxygen is 17.02%, and easy to be solved in water and the solution has the performance of hydrogen peroxide and urea liquor having good stability, slow releasing of oxygen and is effective for a long time.

Description

technical field [0001] This invention relates to the synthesis method of percarbamide and the screening of novel stabilizer. The synthesis method has simple route, simple operation, high yield, no pollution, and the waste liquid can be recycled. Background technique [0002] Percarbamide is a new fine chemical product. It is a crystal adduct of hydrogen peroxide and urea. It is a white crystalline powder with a theoretical active oxygen content of 17.02%. It is easily soluble in water. The aqueous solution contains both hydrogen peroxide and The properties of urea aqueous solution, good stability, slow release of oxygen, long effective time, has a wide range of uses (such as bleaching, sterilization, disinfection, etc.), and has a wide range of application prospects. However, this important fine chemical product is still in a blank in the industry and needs to be developed and applied urgently. At present, the production capacity of sodium percarbonate complete set has rea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C273/02C07C273/14C01B15/037
Inventor 邢永恒
Owner LIAONING NORMAL UNIVERSITY
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