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Desmophen® 7653 W - for flexible slabstock foams

A reactive trifunctional polyether modified with a polyurea of fine particle size, for the production of high resilience flexible PUR slabstock foams of medium hardness. Hydroxyl Number approx. 27 mg KOH/g

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Product Types

  • Polyol

Material

No data available

General Characterization

Desmophen® 7653 W is a reactive trifunctional polyether modified with a polyurea of fine particle size with a solid content of approx. 10% by weight, for the production of high resilience flexible PUR slabstock foams of medium hardness.

Storage Conditions

Recommended storage temperature (°C): 10 - 35
Shelf life (ex works)
12 months if stored in sealed, moisture-tight containers
Partially used containers should be tightly resealed due to the hygroscopic nature of the product.
Note:
The filler dispersed in Desmophen 7653 W tends to settle. The product must be recirculated or stirred in order to homogenize it before processing.
Recommended temperature for processing (°C): 20 - 25.

Sampling

Moisture access must be prevented when taking product samples.

Packaging Type

No data available

Technical Properties & Datasheets

Characteristics

Property Name Test Method Unit Value
pH 2201-0240101-92-D approx. 8
Density 25 °C DIN 51757 g/cm³ 1.05
Specific heat capacity (Cp) at 25 °C DIN 51007 kJ/kg ^. K 1.801
TDI basic value pbw Desmodur® T calculated on 100 pbw Desmophen® 7653 W in an anhydrous state. 4.34
Thermal conductivity at 20 °C DIN 52612-1 W ^. m^-1 ^. K^-1 0.152
Appearance PET-03-04 opaque, white liquid
The water content must be taken into account when preparing the formulation.

Specifications

Property Name Test Method Unit Value
Hydroxyl number 2201-0135202-90 mg KOH/g 25.5 - 30.5
Viscosity 25 °C PET-10-01 mPa*s 1550 - 2050
Water content PET-19-01 % by wt. 0.23 - 0.33
Viscosity 25 °C PET-10-01 mPa*s 1550 - 2050
Water content PET-19-01 % by wt. 0.23 - 0.33
Hydroxyl number 2201-0135202-90 mg KOH/g 25.5 - 30.5

Downloads

Technical Data Sheet
Safety Data Sheet
No direct download available, please visit www.productsafetyfirst.covestro.com

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