Biomass-Derived Polyol Composition for Reactive Polyurethane Foam

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Solution Overview

Problem

Existing polyol compositions derived from petroleum-based materials face challenges in achieving high reactivity with isocyanate, leading to suboptimal mechanical properties and appearance quality in polyurethane foam, while also posing environmental concerns due to non-renewable resource depletion and greenhouse gas emissions.

Innovation Solution

A polyol composition incorporating a compound derived from 1,4:3,6-dianhydrohexitol, such as isosorbide, with a controlled ratio of linear and branched alkylene groups, optimized for reactivity and hardness, featuring a block copolymer structure and low unsaturation, acid value, and high hydroxyl group content.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If petroleum-based polyol is used, then reactivity with isocyanate is insufficient, but using biomass-derived polyol may improve reactivity while facing challenges in mechanical properties and appearance quality

Engineering Contradiction:

Improvereactivity with isocyanateVSAvoidappearance quality of polyurethane foam

Core Design Contradiction:

ReliabilityVSManufacturing precision

Solution Approach 1:

The patent creates a composite polyol system by combining biomass-derived polyol (containing 1,4:3,6-dianhydrohexitol units) with conventional polyol components. This composite approach allows the biomass portion to provide high reactivity through primary hydroxyl groups while the overall composition is optimized to maintain mechanical properties and appearance quality, thus resolving the contradiction between improved reactivity and manufacturing precision.

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

The patent optimizes specific parameters of the polyol composition including the content of 1,4:3,6-dianhydrohexitol (5-50 wt%), number average molecular weight (300-12,000 g/mol), polydispersity index (1.0-1.3), acid value (0.0005-0.0100 mg KOH/g), and degree of unsaturation (0.02 meq/g or less). By precisely controlling these parameters, the invention achieves both high reactivity with isocyanate and excellent appearance quality of the resulting foam.

Inventive Principle:

Principle #35Parameter changes

2Strength

If polyol composition is optimized for high reactivity, then mechanical properties improve, but environmental sustainability may be compromised

Engineering Contradiction:

Improvemechanical properties of polyurethane foamVSAvoidenvironmental impact

Core Design Contradiction:

StrengthVSObject-affected harmful factors

Solution Approach 1:

The patent converts the potential disadvantage of biomass-derived polyol (lower mechanical properties) into a benefit by utilizing the high reactivity of primary hydroxyl groups in 1,4:3,6-dianhydrohexitol. This high reactivity enables formation of strong chemical bonds with isocyanate, actually improving mechanical properties while maintaining environmental sustainability through renewable resource usage.

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

Solution Approach 2:

The patent optimizes the molecular weight (300-12,000 g/mol) and polydispersity index (1.0-1.3) to ensure that the biomass-derived polyol achieves both high mechanical strength and environmental sustainability. The controlled parameters allow the renewable resource-based polyol to perform as well as or better than petroleum-based alternatives.

Inventive Principle:

Principle #35Parameter changes

3Strength

If polyol composition is optimized for hardness, then structural integrity improves, but reactivity with isocyanate may be reduced

Engineering Contradiction:

Improvehardness of polyurethane foamVSAvoidreactivity with isocyanate

Core Design Contradiction:

StrengthVSReliability

Solution Approach 1:

The patent applies local quality by having different functional regions within the polyol molecule: the 1,4:3,6-dianhydrohexitol units provide high reactivity through primary hydroxyl groups, while the polyether or polyester backbone provides structural integrity and hardness. This spatial separation of functions allows both high reactivity and appropriate hardness to be achieved simultaneously.

Inventive Principle:

Principle #3Local quality

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The polyol composition enhances reactivity with isocyanate, resulting in polyurethane foam with improved mechanical properties, processability, and transparency, while being eco-friendly and reducing environmental impact.

Implementation Method 1

polyurethane can be manufactured by polyaddition reaction of polyol and isocyanate

Methodology Applied

Scientific EffectPolyaddition reaction: Chemical Bonding

Data Source

PatentUS20260062510A1Polyol composition and preparation method therefor, composition for polyurethane preparation comprising polyol composition, and battery module

Publication Date: 2026.03.05 PUCORE CO LTD

AI summary

A polyol composition, a composition for polyurethane preparation comprising the polyol composition, and a battery module according to the present invention comprise a compound represented by chemical formula 1 (see the description of the invention). In addition, the polyol composition according to the present invention comprises a first unit derived from at least one type of 1,4:3,6-dianhydrohexitol and a second unit derived from an alkylene oxide, and has a degree of unsaturation of 0.02 meq/g or less according to the following measurement method (see the description of the invention).