HDI

HDI (Hexamethylene-1,6-Diisocyanate)

Chemical Name: Hexamethylene Diisocyanate (HDI)

Synonyms: 1,6-Hexamethylene Diisocyanate; 1,6-Diisocyanatohexane

Molecular Formula: C₈H₁₂N₂O₂

Description: HDI is a colorless to slightly yellowish liquid aliphatic diisocyanate with a pungent, irritating odor. It is highly reactive and serves as a key building block in the production of high-performance polyurethane materials.

Key Properties:

Appearance:Colorless liquid
NCO Content:≥49.7
Purity: ≥99.5%
Colour value:≤30
Hydrolyzed chlorine content:≤100mg/kg
Density (20°C): 1.05 g/cm³

Applications: HDI is primarily used as a raw material for synthesizing polyisocyanates (e.g., HDI trimer, biuret, or uretdione derivatives) for two-component polyurethane coatings, adhesives, elastomers, and sealants. These products offer excellent weather resistance, non-yellowing properties, gloss retention, and UV stability, making them ideal for:

Automotive refinish and OEM coatings
High-grade wood coatings
Industrial and anticorrosion coatings
Plastic coatings
Adhesives and elastomers

Safety Notes:

HDI monomer is highly reactive and toxic. It may cause respiratory sensitization and skin irritation. Proper ventilation and protective equipment are required during handling.

HDI

HDI (Hexamethylene-1,6-Diisocyanate)

Key Properties:

Safety Notes:

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