Polythene foam liquid Liquid A is a light brown formulated polyester polyol, especially developed for the manufacture of rigid polyurethane foam for sandwich panel (insulation).
Polyurethane Liquid B is a liquid dark brown mixture of biphenyl methane, ISO cyanate. It is used in conjunction with polyol to produce rigid polyurethane foam.
Usually used for insulated sandwich panels, cold rooms, and freezers.
Also used as boat hull cavity filler and ice box insulation.
Recommended ratio 1:1 by volume.