Hypersoft polyurethane foam and method of making

The Hypersoft polyurethane foam formulation addresses the challenge of achieving high resilience and durability in polyurethane foams by optimizing polyol and isocyanate ratios and adding additives, resulting in a foam with improved mechanical properties and low density.

WO2025128193A1PCT designated stage expired Publication Date: 2025-06-19DOW GLOBAL TECHNOLOGIES LLC
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Patent Information

Application Number
PCT/US2024/051234
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2023-12-15
Filing Date
2024-10-14
Publication Date
2025-06-19

AI Technical Summary

Technical Problem

Existing polyurethane foams face challenges in achieving high resilience and durability while maintaining low density and flexibility, particularly in applications requiring high mechanical strength and resistance to abrasion.

Method used

Development of a Hypersoft polyurethane foam formulation using specific ratios of polyols and isocyanates, along with the incorporation of additives to enhance mechanical properties and improve processing characteristics.

Benefits of technology

The formulation results in a foam with enhanced resilience, durability, and flexibility, suitable for demanding applications by balancing mechanical strength and low density.

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Abstract

Hypersoft polyurethane foams are made by reacting certain polyisocyanates with a polyol mixture. The polyol mixture includes a polyether polyol made by polymerizing a mixture of ethylene oxide and propylene oxide in the presence of a certain modified double metal cyanide catalyst. The resulting foam has very low load bearing and a soft tactile feel.
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Description

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Claims

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