Rigid Foam Polyether Polyol R403

Overview

Polyether polyol R403 is an ethylenediamine-based, four-functional polyether polyol with a high hydroxyl value (760±15 mgKOH/g). Its tertiary amine groups make it self-catalyzing, so it speeds up the foaming reaction and improves foam strength.

Also known as

Polyether 403; Amine-initiated polyether polyol

Specifications

Test items	Specifications
Appearance	Colorless to light yellow transparent liquid
Hydroxyl value /(mgKOH/g)	760±15
Water content /%	≤0.15
Viscosity (25℃) /mPa·s	1400-2400
Acid value /(mgKOH/g)	≤0.08
pH	10.0-13.0

Applications

• Co-polyol for rigid polyurethane foam to raise reactivity and strength
• Spray foam and fast-curing rigid foam systems
• Crosslinker in polyurethane formulations

Packaging

210 kg/drum; 1000 kg/IBC; ISO tank or flexitank on request.

Storage

Store in sealed containers in a dry place at 15–35 ℃. Polyols absorb moisture, so keep containers closed; a nitrogen blanket is recommended for bulk storage.