Polyether polyol is one of the most fundamental polyol raw materials for polyurethane industry. Based on functional initiator, molecular weight, hydroxyl value and target curing system, Hebei Yadong Chemical Group sorts its polyether products into five major technical categories, each with distinct structural characteristics, processing window and end-use boundary. This classification logic helps formulators quickly match proper grades according to product specifications and production equipment.The first category is rigid foam polyether polyol. Its core feature is high functionality and high hydroxyl value. After crosslinking with MDI or polymeric MDI, the cured foam forms dense closed-cell structure, which suppresses heat conduction effectively. Key performance focuses on thermal conductivity, dimensional stability and compressive strength. Typical applications include exterior wall insulation sandwich panels, refrigerator cabinet foaming, cold storage insulation, pipeline thermal protection and PU imitation wood decorative parts.The second category is flexible foam polyether polyol. It adopts glycerin-based triether structure with relatively low hydroxyl value and high molecular weight. The polymerization quality control targets low unsaturation and low volatile organics. The foam exhibits low density, good resilience and soft touch. It is widely used for mattress slabstock foam, sofa cushion, packaging buffer foam and general-purpose packing foam.The third category is high resilience foam polyether polyol. Terminal EO capping is the core technical feature. Primary hydroxyl groups greatly accelerate reaction rate under cold-cure condition, eliminating long heating curing process. The finished foam has excellent ILD curve, low hysteresis loss and outstanding fatigue resistance. Major markets are automotive seat foams, headrest, armrest, bicycle saddle and high-grade office chair cushion.The fourth category is CASE polyether polyol for coating, adhesive, sealant and elastomer. Its design emphasizes narrow molecular distribution, low monohydroxy impurity, stable hydrolysis resistance and controllable reactivity. It does not pursue high foaming ratio, but focuses on mechanical property balance after curing. It is applied for solvent-free protective coating, PU structural adhesive, road joint sealant, roller elastomer, casting polyurethane parts and waterproof membrane base material.The fifth category covers functional special polyether, including pre-blended polyols and coal mining safety polyether polyol. Blended polyols integrate multiple polyether components in fixed proportion, simplifying batching and stabilizing foaming reproducibility. Mining safety polyether is specially engineered for underground grouting reinforcement and water shutoff, with adjustable gel time, low exotherm, good permeability and qualified flame retardant property to satisfy underground safety standards.Yadong’s classification system is not only for product catalog display. The R&D and QC teams use this framework to set independent test standards, storage requirements and technical service schemes for each category. Meanwhile, the team continuously collects feedback from different downstream processes to optimize catalyst system, neutralization and post-treatment process, expanding the applicable boundary of each polyether series.
Hebei Yadong Chemical Group presents four core polyether polyol grades widely adopted in polyurethane formulation systems, namely YD-R3451/1, YD-330N, YD-3048 and YD-360N. Each grade is designed with customized initiator system, PO/EO copolymerization ratio and terminal capping structure, forming differentiated hydroxyl value, viscosity and reactivity profiles to match different foaming and forming processes.YD-R3451/1 belongs to rigid foam polyether, developed with high-functionality starting agent. It features high hydroxyl value, moderate viscosity and good flowability. When compounded with flame retardants, catalysts and blowing agents, it delivers closed-cell rigid foam with low thermal conductivity and stable dimensional performance, mainly applied for building insulation panels, cold-chain equipment insulation and on-site pouring thermal insulation.YD-330N is a classic trifunctional high-resilience polyether polyol, capped with ethylene oxide to form primary hydroxyl terminals. Its stable reactivity, low unsaturation degree and low volatile content make it highly compatible with isocyanate and polymer polyol. It is widely used for cold-cure high-resilience molded foam for automotive seating, armrest, furniture cushions and semi-rural self-skinning parts.YD-3048 is a general-purpose flexible slabstock polyether polyol. Controlled PO polymerization brings balanced viscosity and stable foaming curve. The foam produced shows uniform cell structure, soft hand-feel and stable compression deflection property. It serves continuous slabstock production for mattresses, sofa cushions and packaging flexible foam.YD-360N is a versatile compoundable polyether grade. It can be used independently or blended with other rigid polyols, supporting adjustable cream time and curing speed. Formulators utilize it for composite rigid foam systems, imitation wood PU products and special filling foam. All four grades undergo continuous online monitoring and batch laboratory verification, ensuring consistent indexes including hydroxyl value, moisture, acid value and alkalinity residue for long-term formulation reproducibility.
Hebei Yadong Chemical Group is a national specialized and sophisticated Little Giant enterprise and high-tech enterprise with over 30 years of continuous devotion to polyurethane raw material industry. Rooted in Hengshui, Hebei Province, the group integrates independent R&D, intelligent manufacturing, performance testing and professional formulation technical service, taking polyether polyol as its core product line.Supported by self-built R&D center and accredited testing laboratory, Yadong masters independent polymerization technology for polyether synthesis. The lab is equipped with precise analytical instruments to test hydroxyl value, viscosity, water content, acid value, unsaturation and reactivity of each batch, forming a closed-loop quality management mechanism from raw material feeding, reaction control, post-treatment to finished product delivery.Its diversified polyether portfolio covers Polyether for Rigid Foams, Polyether for Flexible Foams, Polyether for High Resilience Foams, Polyether for CASE, Blended Polyols and Coal Mining Safety Polyether Polyol, including well-known grades YD-R3451/1, YD-330N, YD-3048 and YD-360N. These materials serve building insulation, cold chain, home furniture, automotive interior, coating, adhesive, elastomer and underground mine grouting reinforcement sectors.Beyond standard grades, the technical team carries out customized molecular design according to customers’ process conditions and performance targets, adjusting initiator formula, PO/EO copolymerization ratio and terminal structure to solve practical formulation difficulties. The group strictly follows ISO quality system and green manufacturing standards, continuously optimizes reaction route to cut energy consumption and volatile emissions.Sticking to stable quality and customer-oriented technical support, Hebei Yadong Chemical Group supplies consistent polyether polyol materials and one-stop PU formulation solutions for partners across domestic and overseas markets, striving to be a reliable long-term supplier in the global polyurethane supply chain.
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.
