Conventional Polyester Polyol is a key polymeric polyol synthesized via the polycondensation of dicarboxylic acids (e.g., adipic acid, phthalic acid) and diols (e.g., ethylene glycol, 1,4-butanediol). It features multiple terminal hydroxyl (-OH) groups, enabling high reactivity with polyisocyanates to form polyurethane materials. It is widely used for producing polyurethanes with excellent mechanical strength, chemical resistance, and thermal stability.

PRODUCT PROPERTIES

Property	Specification
Melting Point	Not applicable (N/A) – typically viscous liquid at room temperature; solidifies at low temperatures (varies by grade)
Density	1.1–1.2 g/cm³ (25°C)
Form	Clear to pale yellow viscous liquid; some grades are milky white/slightly yellow solid at room temperature (melts to transparent liquid)
Main Applications	Polyurethane rigid/semi-rigid foams, CASE materials (Coatings, Adhesives, Sealants, Elastomers), elastomers, insulation panels, industrial coatings, automotive parts
InChI	Varies by specific grade (no universal InChI for conventional polyester polyol mixtures)
InChIKey	Varies by specific grade
SMILES	Varies by specific grade (e.g., for adipate-based polyester diol: O(CH₂)ₙO[CO(CH₂)₄CO]ₘO(CH₂)ₙOH, n=2/4, m=polymerization degree)
EINECS Number	258-656-8 (generic for polyester polyol mixtures)
EPA Chemical Information	Listed under EPA’s TSCA (Toxic Substances Control Act) inventory; CAS No. 53637-25-5 (generic)

PRODUCT USES

Polyurethane Foams: Core raw material for rigid insulation foams (construction, refrigeration) and semi-rigid foams (automotive interiors).
CASE Applications: Used in high-performance coatings (corrosion resistance), structural adhesives, industrial sealants, and durable elastomers.
Elastomers: Produces wear-resistant polyurethane elastomers for rollers, seals, and industrial components.
Specialty Materials: Applied in composite materials, pipe insulation, and chemical-resistant equipment parts.

ABOUT US

Shandong Hualu Hengsheng Chemical Co., Ltd. is the core enterprise of Hualu Group's chemical business, with a total output of 60 million tons and over 3,000 employees. The company's products cover ten major areas, including new energy and new materials, chemical fertilizers, organic amines, acetic acid and its derivatives, polyols, synthetic resins, polyurethane, fragrances and flavors, additives and catalysts, and inorganic chemicals, totaling over 100 products.

PACKAGING AND TRANSPORTATION

Our company offers diversified, standardized, and customized packaging services for products. All packaging strictly complies with usage and transportation safety regulations. We support various formats such as standard bags, drums, and ton bags, and can flexibly adjust specifications, materials, and packaging methods according to customer needs to meet different usage scenarios such as warehousing, transportation, and export. Our products are safe, reliable, convenient, and practical.

FAQ

Q: Do you provide technical data and usage guidance?

A: Product manuals, technical parameters, MSDS and other documents are provided, together with professional pre-sales technical consultation and application guidance.

Q: Can you provide samples?

A: Samples are available for some products. Please consult customer service for specific application, quantity and cost.

Q: What should I do if the packaging is damaged upon receipt?

A: Please inspect goods upon receipt. If damage or leakage is found, provide photos for verification and we will handle it promptly.

Q: Do you support export and provide customs clearance documents?

A: Export packaging is supported. Customs clearance documents such as MSDS, packing list and commercial invoice are available to assist with cross-border logistics.

Q: How long will it take to deliver after ordering?

A: Regular in-stock items will be shipped within 1–3 working days. For customized packaging or special orders, delivery time shall be negotiated by both parties.

Q: What is the MOQ of your products?

A: Small-batch samples and large-volume orders are both supported. Specific MOQ can be negotiated based on product model and packaging type.

Q: Is transportation safe and compliant?

A: Transportation is carried out in strict accordance with regulations for general or dangerous chemicals, with qualified logistics and protective measures to ensure full-process safety.

Q: How to store chemical products properly?

A: Store in a cool, dry and ventilated area, away from fire, heat and strong corrosive substances. Store by category to avoid mixed storage risks.

Q: How is product quality guaranteed?

A: Products are produced and tested in strict accordance with industry standards. Quality inspection reports and certificates are available to ensure stable and reliable quality.

Q: Do you support customized packaging?

A: Customization is available. We can customize size, material, label and sealing method according to customer requirements for different storage, transportation and export scenarios.

Q: Is the packaging compliant with transportation and export safety requirements?

A: All packaging complies with safety regulations for storage, transportation and export, with qualified sealing and firmness, suitable for land, sea and other logistics scenarios.

Q: What types of packaging do you provide?

A: We provide regular packaging such as bags, drums and ton bags, as well as standardized and customized packaging. Specifications, materials and sealing methods can be adjusted flexibly according to product characteristics.

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