Polyether Polyol

Polyether Polyol is a class of high-molecular-weight polymers produced through the ring-opening polymerization of propylene oxide (PO) and/or ethylene oxide (EO), using low-molecular-weight polyols or amine compounds as initiators under the action of catalysts. Common initiators include ethylene glycol, propylene glycol, glycerol, and pentaerythritol, while commonly used catalyst systems include potassium hydroxide (KOH) and double metal cyanide (DMC) catalysts.

The molecular chains of polyether polyols contain terminal active hydroxyl groups (-OH), providing excellent reactivity with isocyanates to form polyurethane materials. Depending on molecular structure design, polyether polyols typically have a functionality range of 2–8, molecular weights ranging from approximately 200 to 12,000, and hydroxyl values of approximately 20–600 mgKOH/g.
As the core raw material of the B-side (polyol component) in polyurethane systems, the molecular weight, functionality, and EO/PO ratio of polyether polyols directly influence the final performance of polyurethane products. Among them:
Molecular weight determines the flexibility, resilience, and elongation properties of polyurethane materials;
Functionality affects crosslinking density, hardness, and dimensional stability;
EO-capping structure influences hydrophilicity, reaction speed, and foaming performance.
Through tailored molecular structure design, polyether polyols can meet the requirements of various polyurethane applications, including flexible foams, rigid foams, elastomers, adhesives, and sealants.

Product Applications
WANOL series polyether polyols are widely used in:
High-resilience flexible polyurethane foam (HR Foam)
Sofas
Mattresses
Automotive seats
Rigid polyurethane insulation foam
Refrigerator and freezer insulation layers
Building insulation boards
Cold storage insulation systems
Spray polyurethane insulation materials
Polyurethane adhesives
Polyurethane sealants
Polyurethane elastomers
CASE materials (Coatings, Adhesives, Sealants, Elastomers)
Pipeline insulation and industrial energy-saving materials