UL Prospector

Desmodur® N 3400

Covestro makes their documentation available in the regions indicated below:

Desmodur® N 3400 is a solvent free low viscosity aliphatic polyisocyanate resin based on hexamethylene diisocyanate (HDI). Can be used as a hardener or reactive diluent for 100% solids, solvent-borne and aqueous, two-pack polyurethane coatings. Depending on the polyol used, the coatings yield tough but flexible films that can be either soft or extremely hard, have good resistance to chemicals and solvents, good weather stability and good resistance to abrasion.


Covestro manufactures adhesive raw materials for use in the production of contact and heat-activated adhesives, as well as reactive and hot-melt adhesives for the transportation, furniture, footwear, packaging, and construction markets. Bayer offers a comprehensive range based on polyurethane and polychloroprene, with specialty raw materials that offer UV light and weather resistance.

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