A neutralizing corrosion inhibitor and a method for preparing the same

By using polysuccinimide, triaminopyrimidine, and tryptophan derivatives in the neutralizing corrosion inhibitor to form coordination bonds and π-π stacking, combined with the flexible chain of ethylene glycol diglycidyl ether, the adsorption performance and film stability problems of existing corrosion inhibitors under harsh working conditions are solved, achieving efficient protection of metal components.

CN122169091AActive Publication Date: 2026-06-09JIANGSU CHUANGXIN PETROCHEM
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
JIANGSU CHUANGXIN PETROCHEM
Filing Date
2026-05-09
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

Existing neutralizing corrosion inhibitors have insufficient adsorption performance under complex multiphase flow, high temperature and high pressure and high flow rate conditions, poor film stability, and cannot effectively protect metal components.

Method used

Using polysuccinimide, triaminopyrimidine, and tryptophan derivatives as the main components, coordination bonds and π-π stacking are formed through esterification reaction to enhance the binding force with the metal matrix. Ethylene glycol diglycidyl ether is used to provide flexible chains to form a physical network, thereby improving the stability of the film layer.

Benefits of technology

It enhances the adhesion and film stability of the neutralizing corrosion inhibitor to the metal surface, effectively protecting metal components and reducing corrosion rate under harsh working conditions.

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Abstract

This application belongs to the field of metal corrosion inhibition, specifically providing a neutralizing corrosion inhibitor and its preparation method. A neutralizing corrosion inhibitor comprises the following components by weight: 50-60 parts deionized water, 18-20 parts corrosion inhibitor matrix, 10-14 parts triethanolamine, 3-5 parts benzotriazole, and 6-8 parts ethylene glycol. The corrosion inhibitor matrix of this application is made from raw materials including polysuccinimide, triaminopyrimidine, and tryptophan derivatives. The neutralizing corrosion inhibitor prepared by this application exhibits good thermal stability and excellent corrosion inhibition performance.
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