PRE Polymeric MDI refers to prepolymer-based isocyanate systems used as reactive intermediates in polyurethane manufacturing. These materials remain soluble and processable, allowing better control over reaction speed, viscosity, and final product properties.

Polyurethane systems using prepolymers can be produced through two main methods:

• One-step process: Direct reaction between polyol and isocyanate
• Two-step process: Formation of a prepolymer followed by chain extension to achieve the final polymer structure

Key Applications:

Prepolymer-based MDI systems are widely used in:

• Cast polyurethane components
• Rigid and semi-rigid polyurethane foams
• Flexible polyurethane foams

Common Uses Across Industries:

Insulation: Used in rigid PU foams for high-performance thermal insulation in buildings, cold storage, refrigerators, and refrigerated transport systems.

Construction: Applied in insulated panels, pre-insulated piping systems, and as binders in engineered wood products such as particleboard and fiberboard.

Refrigeration: Essential for maintaining thermal efficiency in domestic and commercial refrigeration equipment.

Automotive: Utilized in seating, dashboards, headliners, and composite material binding for lightweight and durable components.

Coatings, Adhesives, Sealants, and Elastomers (CASE): Widely used in CASE applications, offering excellent adhesion, flexibility, weather resistance, and long-term durability.

Footwear & Sports Equipment: Used in the production of footwear soles, protective gear, and various sports goods requiring strength and flexibility.

Recycling & Binder Applications: Prepolymer-based binders are effective in recycling waste foam and rubber, converting them into value-added products such as orthopedic mattresses, carpet underlays, and rubber flooring tiles.