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Polyester Polyol For All Water foaming

Polyester polyols are key components in water-blown polyurethane (PU) foams, offering advantages like high mechanical strength, thermal stability, and flame resistance compared to polyether polyols. They are widely used in rigid foams, coatings, adhesives, and elastomers.
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Product Overview


Polyester Polyol For All Water foaming is a water-reactive polyol designed for water-blown polyurethane foam systems, eliminating the need for hydrocarbon or fluorinated blowing agents. This polyol leverages the isocyanate-water reaction to generate CO₂ gas, enabling low-VOC, halogen-free foam production. Its molecular structure balances hydrophilic segments (for water compatibility) and hydrophobic chains (for foam stability), with a hydroxyl number of 200–350 mg KOH/g and functionality of 2.8–3.2. With a viscosity of 4,000–8,000 cps at 25°C, it supports diverse processing methods including spray, pour, and molding.


Features


Water Compatibility

The controlled hydrophilic-lipophilic balance (HLB) ensures uniform mixing with water (up to 10% by weight), preventing phase separation and enabling stable foam rise with cell size distribution ≤50 μm.


Efficient CO₂ Generation

Optimizes the isocyanate-water reaction to produce consistent CO₂ output, achieving foam density 25–40 kg/m³ with closed-cell content ≥85% in rigid formulations. This reduces material usage while maintaining insulation performance.


Environmental Advantages

Enables zero ozone depletion potential (ODP) and low GWP (≤1) foam systems, complying with EU Ecolabel and LEED requirements. Foams emit ≤5 ppm VOCs and contain no formaldehyde or halogens.


Processing Versatility

Adaptable to rigid and semi-rigid applications, with adjustable cure times (10–30 minutes) to suit production needs. Compatible with standard PU additives like surfactants and flame retardants without performance loss.


Applications


Building Insulation

Spray Foam: Used in open-cell and closed-cell spray insulation for walls and attics, providing air sealing and thermal resistance (λ-value ≤0.024 W/m·K).

Insulation Boards: Manufactures rigid foam boards for retrofitting existing buildings, with compressive strength ≥0.8 MPa and moisture resistance (water absorption ≤1.0%).


Packaging and Cushioning

Molded Foam Inserts: Creates custom-fit packaging for electronics and medical devices, with shock absorption ≥80% at 1m drop height.

Loose-Fill Packaging: Produces lightweight, biodegradable loose-fill as an alternative to polystyrene peanuts.


Automotive and Industrial

Interior Trim: Forms semi-rigid foam for door panels and headliners, with low odor and VOC emissions ≤3 ppm to meet automotive standards.

Sound Insulation: Used in acoustic foam barriers for machinery enclosures, reducing noise transmission by 20–30% (measured at 1kHz).


Storage


Container: Store in airtight HDPE or stainless steel containers to prevent moisture absorption (water content ≤0.2%).

Conditions: Maintain temperatures at 5–30°C with humidity ≤60%, away from direct sunlight.

Handling: Avoid contact with strong acids and isocyanates when not in production, as premature reaction may occur.


Technical Specifications


Parameter

Value

Appearance

Pale yellow liquid

Hydroxyl Number

200–350 mg KOH/g

Viscosity (25°C)

4,000–8,000 cps

Functionality

2.8–3.2

Water Compatibility

≥10% (by weight)

Acid Value

≤1.0 mg KOH/g

Density (25°C)

1.01–1.05 g/cm³


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