Aromatic polyester-polyols specially designed for board stock for building insulation, polyisocyanurate foams and in combination with polyether-polyols for spraying applications. They are a good compromise among cost and performance above all for fire resistance applications.

Product Name Viscosity
OH Number
mg KOH/g 
High Temperature Resistance Low Temperature Resistance Functionality Biobased Content
Glypol 3920 2200 (25°C) 315 ++ + 2 15% Flexible foam for spraying applications
Glypol 3921 1000 (25°C) 190 ++ + 2 50% Rigid foams for thermal and sound isolation
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