Antibacterial color-fixing polyurethane and preparation method thereof, and application in insole leather

By using antibacterial color fixing polyurethane in polyurethane synthetic leather, combined with oregano fiber and specific additives, the problem of insufficient antibacterial toxicity and color fixing performance of polyurethane synthetic leather is solved, and good antibacterial and color fixing performance is achieved.

CN119144143BActive Publication Date: 2025-03-18XUCHUAN CHEM SUZHOU
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Patent Information

Application Number
CN202411659909.8
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-11-20
Publication Date
2025-03-18
Estimated Expiration
2044-11-20

AI Technical Summary

Technical Problem

The existing polyurethane synthetic leather has the problem of antibacterial agents being toxic to human health and poor color fixing performance, especially the lack of color fixing performance in blue.

Method used

An antibacterial color fixing polyurethane is used, and its raw materials include polyurethane resin, oregano fiber, plasticizer, color paste and organic solvents. Carvacrol, N-methyldiethanolamine and goat soybean are introduced into the polyurethane resin to improve antibacterial and color fixing properties.

Benefits of technology

It achieves antibacterial properties that are non-toxic to human health, and significantly improves the color fixing performance of polyurethane, especially the blue color fixing performance, and enhances wear resistance and mechanical properties.

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Abstract

The invention discloses an antibacterial color-fixing polyurethane, wherein the raw materials include by weight: 100 parts of polyurethane resin, 10-20 parts of oregano fiber, 1-3 parts of plasticizer, 3-8 parts of color paste, and 260-80 parts of organic solvent; wherein the raw materials of polyurethane resin include by weight: 3.7-8.1 parts of diisocyanate, 14-16 parts of polyol, 2-6 parts of dihydroxy silicone oligomer, 0.5-0.7 parts of N-methyldiethanolamine, 0.5-0.55 parts of caprine, 0.03-0.06 parts of antibacterial agent, 0.55-1 parts of chain extender, 0.03-0.06 parts of terminator, 0.5-0.6 parts of organic acid, and 161-66 parts of organic solvent. The invention also discloses a preparation method and application of the above-mentioned antibacterial color-fixing polyurethane. The invention also discloses a polyurethane insole leather and a preparation method thereof. The antibacterial color-fixing polyurethane of the present invention has good antibacterial and color-fixing properties.
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