Hydroxybenzoyl hydrazine modification-based polyaspartic acid derivative as well as preparation method and application thereof

By introducing the hydroxybenzohydrazide structural fragment into the polyaspartic acid peptide chain, a new type of water treatment agent with scale inhibition, corrosion inhibition, antibacterial and fluorescence characteristics was synthesized, which solved the problems of scale deposition and pipeline corrosion in industrial circulation cooling water, and achieved efficient and multifunctional water treatment effect.

CN119638993AActive Publication Date: 2025-03-18CHANGZHOU WUJIN SHENGYUAN CHEM CO LTD
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Patent Information

Application Number
CN202411808984.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-10
Publication Date
2025-03-18
Estimated Expiration
2044-12-10

AI Technical Summary

Technical Problem

The existing circulating cooling water system has caused scale deposition and pipeline corrosion due to the presence of anion and cations, and the existing technology methods are costly or inconvenient to operate.

Method used

By introducing the hydroxybenzohydrazide structural fragment into the polyaspartic peptide chain, a new type of water treatment agent with scale inhibition, corrosion inhibition, bacteriostatic and fluorescence characteristics are synthesized.

Benefits of technology

It realizes effective scale inhibition, corrosion inhibition and bacteriostatic prevention in industrial circulation cooling water, improves the multifunctional performance of water treatment agents, and simplifies the detection of water treatment agent concentration through fluorescence tracer function.

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Abstract

The invention discloses a polyaspartic acid derivative based on hydroxybenzoyl hydrazine modification and a preparation method and application thereof.The hydroxybenzoyl hydrazine is introduced into a peptide chain of polyaspartic acid through a graft copolymerization method, three derivatives are synthesized, the derivatives can be combined with metal ions such as Ca < 2 + > to generate water-soluble complexes, and the water-soluble complexes can be used for preparing the polyaspartic acid derivative based on hydroxybenzoyl hydrazine modification and the preparation method and application of the polyaspartic acid derivative based on hydroxybenzoyl hydrazine modification. The scale inhibitor has good scale inhibition and antibacterial properties, and also has a certain corrosion inhibition effect. In addition, the derivative has a good inhibition effect on escherichia coli, and the escherichia coli is a main pollution source in circulating cooling water. The derivative also has better optical properties, and is convenient to cooperate with a fluorescence monitor in industrial production to monitor the concentration of the derivative in a circulating cooling water pipeline in real time, so that the industrial production process is optimized. Therefore, the scale inhibition performance, the corrosion inhibition performance and the antibacterial performance of the polyaspartic acid derivative are remarkably improved by modifying the polyaspartic acid derivative through the hydroxybenzoyl hydrazine, meanwhile, application of phosphorus-containing compounds is avoided, and the negative influence on the environment is effectively relieved.
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