Polyether Polyols

Polyether Polyols

Polyether polyols are oligomers featuring ether linkages in the backbone and multiple terminal hydroxyl groups, primarily produced through the addition polymerization of an initiator and an epoxide. They are core raw materials in the polyurethane industry and are widely used in applications such as foams, coatings, and adhesives.
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Chemical Properties

AppearanceColorless ~ light yellow transparent viscous liquid, no suspended solids
Color (APHA / Gardner)Flexible foam: ≤50 APHARigid foam: ≤8 Gardner
Viscosity (25℃, mPa·s)Flexible foam: 300 ~ 1200Rigid foam: 3000 ~ 8000
Hydroxyl Value (mgKOH/g)Flexible foam: 28 ~ 60Rigid foam: 400 ~ 500
Moisture Content≤0.05% (Premium grade ≤0.03%)
Acid Value≤0.10 mgKOH/g
pH Value5.0 ~ 7.5
Potassium & Sodium Ions (K⁺+Na⁺)≤5ppm (High-end CASE / Elastomer grade)
Density1.00 ~ 1.05 g/cm³
SolubilityMiscible with water, alcohols, DMF, esters; insoluble in alkanes
Flash Point≥200℃
Visual InspectionHigh-functionality sucrose type tends to have darker color
GB/T 1722Darker color indicates more by-products
GB/T 2794Higher hydroxyl value & functionality lead to higher viscosity
GB/T 12008.3Core purchasing index, determines crosslink density
GB/T 22313Excessive moisture causes bubbles & voids during foaming
GB/T 12008.4Acidity consumes catalyst and impairs curing effect
Potentiometric MethodAmine ether type is alkaline: 8 ~ 11
Atomic Absorption SpectrometryMetal ions affect storage stability and cause over-catalysis
GB/T 1033Higher PO content results in slightly lower density
—Higher EO content brings stronger water solubility
GB/T 261Combustible, not classified as hazardous chemicals

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FAQ

Q1:Does it support customized products?

A1:Yes, it does. Formulations can be adjusted and customized production can be carried out according to customer's industry needs and performance parameters.


Q2:Can samples be provided?

A2:We support free sample delivery and testing services to meet customers' early testing needs.


Q3:Is the product quality stable? 

A3:With full-process quality inspection and control, there are minimal batch differences, and the purity and stability strictly meet the standards.


Q4:What is the shipping cycle?

A4:For regular inventory, we offer quick delivery. For customized orders, we arrange production according to demand and ensure timely delivery.

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