Zero vocs epoxy modified waterborne polyurethane emulsion, its preparation method and application
By using high-boiling-point raw materials and reacting with specific groups, the problem of VOCs residue in waterborne polyurethane emulsions was solved, and a zero-VOCs epoxy-modified waterborne polyurethane emulsion with high adhesion and media resistance was prepared.
CN120795269BActive Publication Date: 2026-06-09NANCHANG HANGKONG UNIVERSITY
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- NANCHANG HANGKONG UNIVERSITY
- Filing Date
- 2025-08-11
- Publication Date
- 2026-06-09
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Figure CN120795269B_ABST
Abstract
This invention discloses a zero-VOCs epoxy-modified waterborne polyurethane emulsion, its preparation method, and its application, belonging to the field of waterborne polyurethane resin technology. The zero-VOCs epoxy-modified waterborne polyurethane emulsion of this invention is composed of the following raw materials: one of ethylenediamine-terminated polyethyleneimine and a zero-VOCs-terminated amino-hydrophilic oligomer, a zero-VOCs-terminated isocyanate-based hydrophilic polyurethane prepolymer, and water. The zero-VOCs-terminated isocyanate-based hydrophilic polyurethane prepolymer provides isocyanate groups for subsequent reactions; the ethylenediamine-terminated polyethyleneimine or the zero-VOCs-terminated amino-based hydrophilic oligomer provides amino groups for subsequent reactions; and water reduces resin viscosity. Furthermore, all raw materials are high-boiling-point zero-VOCs substances, ensuring that VOCs will not be present due to incomplete reactions.
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