Polyols

Polyols Used in Rigid Foam Systems

In rigid foam systems, polyether polyols, which are used in block and sheet foam production, and saturated polyester polyols, which are widely utilized in applications such as foam, footwear, and elastomers, are classified based on their linear or different molecular structures.

These polyols vary in structural properties, viscosity levels, hydroxyl (OH) values, and functionality, making them suitable for various industrial applications. Selecting the right polyol ensures higher efficiency, durability, and improved product performance in manufacturing processes.

Polyester Polyols

Saturated polyester polyols are widely used in foam, footwear, elastomers, and various industrial applications. Depending on their molecular structure, they can be classified as linear or branched polyols. These polyols contribute significantly to product durability, flexibility, and resilience, making them an essential component in high-performance applications.

Key Features of Polyester Polyols:

✔ Diverse chemical structures: Available in different formulations to meet specific application needs.
✔ Viscosity variability: Different viscosity levels provide ease of processing and application.
✔ Varied OH values: Hydroxyl values can be customized to optimize performance.
✔ Different functionality levels: Offer tailored solutions for various industrial applications.

Saturated polyester polyols are particularly preferred in industries requiring high strength and elasticity, such as footwear soles, elastomers, and foam production.

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Polyether Polyols

Polyether polyols are widely used in applications such as floor coatings, OCF (One-Component Foam), rigid foam systems, and block and sheet foam production. These polyols are categorized based on their initiators, each providing unique benefits in different industrial applications.

Classification of Polyether Polyols by Initiator:

✔ Sucrose: Used in rigid foam production due to its carbohydrate-based structure.
✔ Sorbitol: Provides high thermal resistance, making it ideal for insulation applications.
✔ Amine: High chemical stability and reactivity make it suitable for specialized foam systems.
✔ Mannich: Preferred for applications requiring high hardness and mechanical strength.
✔ Glycerol: A multifunctional structure that is utilized in various polyurethane systems.
✔ Bromine: Enhances flame retardancy, making it ideal for fire-resistant foam production.
✔ Soy-Based: A plant-based alternative, used in eco-friendly polyurethane systems.

Key Features of Polyether Polyols:

✔ Different structural properties: Custom formulations for diverse application needs.
✔ Viscosity variability: Flow properties adapted to different production processes.
✔ Varied OH values: Hydroxyl values tailored to meet specific application requirements.
✔ Different functionality levels: Offers varying reactivity and mechanical properties depending on the application.

Polyether polyols are known for their high strength, flexibility, and long-lasting performance, making them essential components in a wide range of industrial and commercial applications.

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