Low Hydroxyl Polyol Resins
We are a manufacturer based in China. We specialize in providing high-quality Low Hydroxyl Polyol Resins for industrial clients across various sectors. Whether you need chemicals consultation or technical support, our team is here to help.
Category：Paint chemicals Own Brand：MT /MOQ:100KG /From China/ B2B only.
Introduction
Performance Features
Compatibility with CAB381. aluminum orientation, weathering resistance, yellowing resistance, adhesion on ABS plastic, inter-layer adhesion with top PU clear coating.
Main Applications
Plastic coat
Low Hydroxyl Polyol Resins: Overview and Key Properties
| Category | Details |
|---|---|
| Chemical Type | Polyether or polyester polyol |
| Hydroxyl Value | 20–100 mg KOH/g |
| Functionality | 2–3 |
| Viscosity (25°C) | 500–10.000 mPa·s |
Key Characteristics
| Property | Typical Range |
|---|---|
| Molecular Weight | 2.000–8.000 g/mol |
| Acid Value | <1.0 mg KOH/g |
| Water Content | <0.05% |
| Glass Transition Temp. (Tg) | -70°C to +20°C |
Production Methods
| Process | Description |
|---|---|
| Polyether Route | Long-chain alkylene oxide polymerization |
| Polyester Route | High molecular weight diol/acid reaction |
| Caprolactone Based | Ring-opening polymerization |
Primary Applications
| Industry | Use Case | Key Benefit |
|---|---|---|
| Flexible Foams | Mattress, seating | Superior elasticity |
| Coatings | Flexible films | Excellent elongation |
| Adhesives | Pressure-sensitive | Permanent tack |
| Elastomers | Soft-touch components | Low compression set |
Formulation Guidelines
| Component | Role | Typical Ratio |
|---|---|---|
| Polyol Resin | Base polymer | 70–95% |
| Isocyanate | Curing agent | 5–30% |
| Plasticizers | Softness enhancer | 0–20% |
| Stabilizers | UV/heat protection | 0.5–3% |
Performance Advantages
| Feature | Impact |
|---|---|
| Low Crosslink Density | High elongation (>400%) |
| Inherent Flexibility | Shore 00–50A hardness |
| Moisture Resistance | Reduced hydrolysis risk |
Comparison with Other Polyols
| Parameter | Low-OH Polyol | Medium-OH Polyol | High-OH Polyol |
|---|---|---|---|
| Cure Speed | Slow | Moderate | Fast |
| Flexibility | Highest | Medium | Lowest |
| Cost | $ | $ | $$ |
Safety & Handling
| Aspect | Requirement |
|---|---|
| Storage | Dry, <30°C |
| VOC Content | <50 g/L |
| PPE | Minimal (low toxicity) |
Market Data
| Application | Market Share | Growth Rate |
|---|---|---|
| Flexible Foam | 60% | 4.0% CAGR |
| Coatings | 25% | 5.2% CAGR |
| Elastomers | 15% | 6.8% CAGR |
Key Benefits and Limitations
| Advantages | Limitations |
|---|---|
| Exceptional flexibility | Limited load-bearing capacity |
| Lower isocyanate demand | Longer demold times |
| Better hydrolysis resistance | Reduced chemical resistance |
Summary
Low hydroxyl polyol resins excel in applications requiring extreme flexibility and durability. Their long polymer chains enable superior elastic recovery, making them indispensable for comfort-focused products while maintaining cost efficiency.
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