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Polyester polyol is a type of polyol, which is a key ingredient in the production of polyurethanes. It is a polymer that contains multiple hydroxyl (-OH) groups. The chemical structure is based on ester linkages (-COO -). These ester linkages are formed through the condensation reaction of a polyhydric alcohol (such as ethylene glycol or propylene glycol) and a polybasic acid (like adipic acid or phthalic acid). The presence of hydroxyl groups makes it reactive in chemical reactions, especially in polyurethane formation.
| Product model | Outside view | hydroxyl value KOHmg/g | Acid value KOHmg/g | Viscosity mPa.s | Moisture, % |
| HSH-806 | yellow liquid | 360-450 | <3 | 1500-4500 | ≤0.1 |
| HSH-806A | yellow liquid | 350-450 | <3 | 1500-4500 | ≤0.1 |
| HSH-808 | yellow liquid | 380-450 | <3 | 2000-5000 | ≤0.1 |
| HSH-810 | yellow liquid | 280-360 | <3 | 8000-45000 | ≤0.1 |
230kg Iron drums
PIR Boards (Polyurethane Boards)
Polyester polyol is a key component in the formulation of PIR boards. When combined with isocyanates and other additives, it undergoes a polymerization reaction to form a rigid polyurethane foam structure. The polyester polyol provides the necessary chemical backbone and reactivity for the formation of a stable and insulating foam matrix. In the production of PIR boards used for refrigerators, it helps to create a highly efficient thermal insulation layer. The closed - cell structure of the PIR board, which is achieved with the participation of polyester polyol, minimizes heat transfer, allowing the refrigerator to maintain a low internal temperature with reduced energy consumption. Similarly, for water heaters and disinfection cabinets, the PIR boards made with polyester polyol help to retain heat and prevent heat loss, ensuring the efficient operation of these appliances.
Spraying Applications
In spray polyurethane foam insulation systems, polyester polyol is mixed with isocyanate and sprayed onto surfaces. This spraying technique is used for insulating various parts of home appliances and also in building insulation related to the installation of home appliances. The polyester polyol - based spray foam adheres well to different substrates such as metal, plastic, and wood. It quickly expands and cures to form a seamless and continuous insulation layer. For example, in the insulation of pipes connected to water heaters or refrigeration systems, the sprayed polyester polyol - based polyurethane foam provides excellent thermal insulation and protection against condensation. It can also fill in small gaps and irregularities, enhancing the overall insulation performance.
Adhesives
Polyester polyol is used in the formulation of polyurethane adhesives. These adhesives are crucial in the assembly of home appliances. They are used to bond different components together, such as attaching insulation materials to the inner walls of refrigerators or water heaters. The reactivity of polyester polyol with isocyanate in the adhesive formulation results in a strong and durable bond. The adhesive can withstand the temperature changes and mechanical stresses that occur during the operation of the appliances. For example, in the manufacturing of disinfection cabinets, the polyurethane adhesive made with polyester polyol helps to firmly attach the insulation panels and other structural parts, ensuring the integrity and functionality of the appliance.
Pipe Insulation
Polyester polyol - based polyurethane foams are commonly used for insulating pipes. The foam is either pre - formed and then fitted around the pipes or applied using spraying techniques. The insulation layer helps to reduce heat transfer in hot water pipes, preventing heat loss and maintaining the temperature of the water. In refrigeration and air conditioning systems, it also helps to prevent condensation on the cold pipes and protects them from external heat sources. The polyester polyol contributes to the formation of a foam with good compressive strength and dimensional stability, which is essential for long - term and reliable pipe insulation.
Huashihang Chemical Group is China leading chemical company.
Jinan Huashihang Chemical Co., Ltd is its sales company with import and export authority. The company was founded in 2004, located in Jinan City, Shandong, China. It started from a small village collective factory, but has now developed into a large private enterprise group with a complete industrial chain.
Being focused on the research, development, production, trade and service of chemicals, Hushihang chemical is a specialized manufacturer and supplier of fine chemicals, cosmetic materials, daily chemicals and food additives.
The company has established a documented system consisting of manual, procedures and instructions, based on the requirements of ISO 9001:2008. The quality policy has been established, understood and maintained. Products are inspected to ensure their suitability to the requirements, and released for delivery only after checking the fulfillment of all specified requirements.
Q1: Could you offer sample?
A1: Yes,sample is available. We can send samples by couriers or air as client's requirements.
Q2: What is MOQ?
A2: It usually does not have MOQ requirement. We will offer the most cost-effective solution including price and delivery way according to purchasing quantities.
Q3: What is the delivery time?
A3: For non-hazardous,it usually has stock. It can be sent within 7 days. For hazardous chemical,it may be 1~2 weeks. If it is our regular product, the time will be earlier.
Q4: Can you provide relevant documents?
A4: Of course. Bill of loading,Commercial Invoice, Packing List, Origin of Certificate , insurance, COA and SDS are available. Besides, we can offer other documents Certificate of Fumigation, documents approved by CCPIT or Consulate,etc.
Q5: Do you accept third party inspection?
A5: Yes,we do.
Q6: What is your payment term?
A6: TT,LC,Paypal,Western Union, ACH wire are available.
Q7: Is DDU or DDP available?
A7: Yes.
Q8: Could you look for other products on China market and coload one container?
A8: Yes. We have warehouse support to accomplish this.
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