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H472 Blended polyol (low density)

Application:
  Refrigerators and freezers.
Introduction:
  H476 is designed for HCFC-141b blowing system. H476 can be used in both high and low pressure foaming machine.
Preponderances:
  Low mould density and good dimensional stability
Properties:
  Appearance                                         Yellow viscous liquid
  Viscosity                        cp, 25 Centigrade      2500-4000
  OH number                    mgKOH/g                 340-420
  Special gravity                g/ml, 20 Centigrade    1.11
Recommended formulation:
  H472                             pbw                           100
  HCFC-141b                   pbw                           22-26
  MDI                               pbw                           145-150
Reaction characteristics (hand mixing, 23-24 Centigrade):
  Cream time                    s                                8-12
  Gel time                         s                                60-80
  Tack free time                s                                90-120
  FRD                              Kg/m3                       23.0-26.0
Foam performances:
  Mould density                Kg/m3                         32.0
  Initial K factor                W/m.K                       0.0190
  Closed cell content         %                              95MIN
  Compressive strength     KPa                          150MIN
  Dimensional stability      
    -30 Centigrade, 72hrs    %                              1.0MAX
Packing:
  215Kg/drum, 1000Kg/drum or about 22MT/isotank
Storage and shelf life:
  Environment temperature is 10-25 Centigrade. Shelf life is 6 month.
Safety data:
  Please feel free to contact us for MSDS.

 
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