Rigid PU foam applications requiring flame retardancy are generally, building
and construction (roofing, wall sheating) and none dosmestic refrigeration. The
FR performances needed depend strongly on the final application and the
country.
The selection of the right phosphorus FR has a major impact on the final
performances of the foam and typical requirements are :
Efficient
Flame Retardancy Low viscosity
for easier process ability
Good green
strength, particularly in sandwich materials Lower cost
in use