Rainwater-washing-resistant and long-acting antibacterial liquid-liquid condensed phase as well as preparation method and application thereof

The liquid-liquid condensed phase constructed by polyethyleneimine and sodium deoxycholate solves the problem of pesticides being easily washed away during the rainy season, realizing a highly efficient and low-cost rain-resistant fungicide suitable for the prevention and control of various plant diseases.

CN121014664APending Publication Date: 2025-11-28SUZHOU INST FOR ADVANCED STUDY USTC +1
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Patent Information

Application Number
CN202511177920.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-08-21
Publication Date
2025-11-28

AI Technical Summary

Technical Problem

Existing pesticides are easily washed away by rainwater during the rainy season, resulting in low utilization rates. Furthermore, traditional methods for enhancing pesticide adhesion to leaves are costly, complex to synthesize, and have poor biocompatibility, making them difficult to promote on a large scale.

Method used

A fully water-based liquid-liquid condensed phase was constructed using polyethyleneimine and sodium deoxycholate. A network microstructure was formed through electrostatic and hydrophobic interactions to enhance the resistance to rainwater erosion. Furthermore, sodium deoxycholate was used to disrupt fungal cell membranes, and the cationic antibacterial properties of polyethyleneimine were utilized to achieve broad-spectrum antibacterial activity.

Benefits of technology

It significantly improves the pesticide's resistance to rain washout and its adhesion, reduces production costs, has broad-spectrum antibacterial activity, is suitable for the prevention and control of a variety of plant pathogens, and meets the needs of green agricultural development.

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Abstract

The invention provides a rain wash resistant and long-acting antibacterial liquid-liquid condensed phase and a preparation method and application thereof.The liquid-liquid condensed phase comprises polyethyleneimine, sodium deoxycholate and metal chloride salt, the concentration of the polyethyleneimine is 0.5 g / L-5 g / L, and the molecular weight of the polyethyleneimine is 600-25000; the concentration of the sodium deoxycholate is 0.5 mM to 50 mM.
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