A bio-based aspartame polyurea seam beautifying agent and its preparation method

By combining bio-based materials and modified hollow glass microspheres, an asparagus polyurea caulking agent with excellent performance was prepared, which solved the shortcomings of bio-based caulking agents in performance stability and environmental protection, and achieved efficient and safe construction effects.

CN118772824BActive Publication Date: 2025-09-09ANHUI SHUOYANG NEW MATERIAL TECH CO LTD
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Patent Information

Application Number
CN202411018653.2
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-07-29
Publication Date
2025-09-09
Estimated Expiration
2044-07-29

AI Technical Summary

Technical Problem

Bio-based asparagus polyurea caulking agent has defects in production process, formula adjustment and performance optimization, and its performance stability is insufficient, making it difficult to meet the needs of environmental protection and sustainable development.

Method used

Bio-based aspartic acid ester resin, bio-based isocyanate prepolymer and other materials are used in combination with modified hollow glass microspheres and compounded matte silica to prepare bio-based aspartic polyurea caulking agent. The caulking agent with excellent performance is formed through ring-opening reaction and fusion process.

Benefits of technology

The prepared caulking agent has good matteness, weather resistance, antibacterial and mildew resistance, and adhesion. The material is safe, the VOC emission is low, the construction is convenient, and the aesthetics and stability are improved.

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Abstract

The present application discloses a bio-based aspartic polyurea caulking agent and a preparation method thereof, relating to the technical field of bio-based caulking agents. The caulking agent comprises a component A and a component B; in parts by mass, the component A comprises: 70-80 parts of a bio-based polyaspartic acid ester resin, 2-5 parts of a polyurethane resin, 1-3 parts of an epoxy acrylate resin, 0-1.5 parts of a dispersant, 0-1.5 parts of a defoamer, 7-12 parts of a compounded matte silica, 6-8 parts of a hydrophobic fumed silica, 5-8 parts of modified hollow glass microspheres, and 3-7 parts of a color paste; and the component B comprises: 40-60 parts of a bio-based isocyanate prepolymer, 15-30 parts of an HDI trimer, 3-8 parts of diaminodicyclohexylmethane, 10-20 parts of isophorone diamine, 3-8 parts of a coupling agent, 2-5 parts of a hydrophobic fumed silica, and 3-10 parts of a modified hollow glass microsphere. The bio-based asparagus polyurea caulking agent provided in this application has excellent weather resistance, good matteness, small color difference, strong adhesion, and also has good antibacterial properties, and is safe and environmentally friendly.
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