Hebei Yadong Chemical Group builds a complete polyether polyol portfolio covering conventional foam polyether, CASE-grade polyether, blended polyols and functional special polyether, covering nearly all mainstream polyurethane application branches. The whole product line is divided by molecular design orientation: rigid foam system, flexible foam system, high-resilience foam system, CASE system and mining safety functional system.
Polyether for rigid foams adopts high-functionality sucrose, sorbitol or composite initiator, characterized by high hydroxyl value, high crosslink density and low thermal conductivity after foaming. It is the core raw material for thermal insulation in construction, refrigeration, cold storage and pipeline insulation. Flexible foam polyether is mainly triol with higher molecular weight. The polymerization process controls unsaturation strictly to avoid foam shrinkage, coarse cells and odor problems, suitable for continuous slabstock and simple molded flexible foam.
Polyether for high resilience foams uses EO end-capping technology to raise primary hydroxyl ratio, achieving fast cold curing without post-curing heating. Foams made from this grade feature high load-bearing, low compression set and excellent comfort, which is the preferred material for automotive interior and high-end furniture seating.
CASE polyether polyol series is developed for Coatings, Adhesives, Sealants and Elastomers. The molecular weight range and reactivity are precisely tuned. Compared with foam polyether, CASE polyether has narrower molecular distribution, low mono-ol content and stable hydrolysis resistance. It helps formulators produce solvent-free polyurethane coating, structural adhesive, construction sealant and cast elastomer with balanced tensile strength and elongation.
Blended polyols are pre-compounded polyether mixtures. Yadong’s technical team completes proportional optimization inside the factory. It simplifies the batching operation for downstream users, reduces formulation error and stabilizes foam physical performance.
The coal mining safety polyether polyol is a flagship functional special grade independently optimized for underground coal mine grouting, surrounding rock reinforcement, water shutoff and air leakage sealing scenarios. Its molecular framework is specially modified to meet underground mine safety specifications. It maintains low initial viscosity to realize deep penetration into micro-fractures of broken coal and rock mass. The gelation time and curing speed can be flexibly adjusted through catalyst matching, while the peak exothermic temperature of the polymerization reaction is well controlled to prevent high-temperature risk underground. The cured consolidation body owns high compressive strength, outstanding bonding force and suitable toughness to adapt to slight strata displacement. This grade integrates intrinsic flame-retardant and anti-static structural design, satisfying strict underground safety indexes including oxygen index, surface resistance and toxic fume limitation. It is widely deployed for roadway surrounding rock consolidation, goaf sealing, water inrush plugging and gas drainage borehole sealing.
All series are produced in dedicated reaction lines with independent sampling and inspection protocols. Formulation support, sample testing and customized modification service are available for partners with special index demands.
