Anionic water-based non-isocyanate polyurethane and preparation method thereof

CN119350616APending Publication Date: 2025-01-24XIANYANG NORMAL UNIV
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Patent Information

Application Number
CN202411485537.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-10-23
Publication Date
2025-01-24

AI Technical Summary

Technical Problem

The isocyanate monomer used in the preparation process of traditional polyurethane materials is toxic, easy to react with water and volatile, resulting in environmental protection and production cost problems. Research on the water-based utilization of non-isocyanate polyurethane is imminent.

Method used

Polyether diamine, double five-membered ring carbonate and L-lysine are used as raw materials, and the non-isocyanate polyurethane prepolymer is reacted under the action of a catalyst, and then a water-based non-isocyanate polyurethane emulsion is obtained through neutralization and dispersion treatment.

Benefits of technology

The characteristics of water -based non -galcus polyurethane polyurethane, low gel rate, good membrane performance, and high hardness of pencils, avoid the use of isocyanate, and improve the environmental protection and performance of materials.

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Abstract

The invention provides anionic water-based non-isocyanate polyurethane and a preparation method thereof, and relates to the technical field of high polymer materials. The preparation method comprises the following steps: firstly, carrying out reaction on polyether diamine, double five-membered cyclic carbonate and L-lysine to obtain a non-isocyanate polyurethane prepolymer; then triethylamine is added for a neutralization reaction; and finally, adding deionized water, and stirring and dispersing to obtain the anionic water-based non-isocyanate polyurethane emulsion. The water-based non-isocyanate polyurethane product prepared by the invention has the characteristics of good water dispersibility, low gel rate, good film-forming property and high pencil hardness.
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Citation Information

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