Modified polyester polyols, antibacterial polyurethane microporous elastomers, and methods for preparing elastomers

By preparing and modifying Ag@SiO2 core-shell structures in polyurethane microporous elastomers, and chemically bonding them to modified polyester polyol molecular chains, the problems of easy precipitation of antibacterial components and poor compatibility were solved, thus realizing polyurethane microporous elastomers with long-lasting antibacterial effect and excellent mechanical properties.

CN122011424BActive Publication Date: 2026-07-17SHANDONG INOV POLYURETHANE
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHANDONG INOV POLYURETHANE
Filing Date
2026-04-07
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing polyurethane microporous elastomers have unstable antibacterial effects in humid and hot environments, their antibacterial components are prone to precipitation, and they have poor compatibility with the substrate, which affects their mechanical properties and service life.

Method used

By preparing Ag@SiO2 core-shell structures and modifying them with silane coupling agents, these structures are chemically bonded to the molecular chains of modified polyester polyols. These structures are then compounded with conventional polyester polyols to form an A/B component system, thereby constructing a long-lasting antibacterial polyurethane microporous elastomer.

Benefits of technology

It achieves a balance between long-term stability of antibacterial properties and physical and mechanical properties, inhibits bacterial growth, extends service life, and expands the range of applications.

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Abstract

This invention belongs to the field of polyurethane elastomer technology, specifically relating to modified polyester polyols, antibacterial polyurethane microporous elastomers, and methods for preparing the elastomers. The modified polyester polyols are obtained by grafting Ag@SiO2, and the antibacterial polyurethane microporous elastomers are prepared using these modified polyester polyols. The antibacterial polyurethane microporous elastomers are mainly formed by mixing and curing components A and B. Component A mainly includes conventional polyester polyols and modified polyester polyols, while component B mainly includes conventional polyester polyols, polyether polyols, and isocyanates. The antibacterial polyurethane microporous elastomers and their preparation methods provided by this invention result in polyurethane microporous elastomers with long-lasting and stable antibacterial properties, uniform dispersion, and excellent physical and mechanical properties and microporous structure.
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