Desmodur l 75

Desmodur L 75 (CAS 9081-90-7), also referenced in procurement as Covestro L 75 or Bayer L 75, is a toluene diisocyanate (TDI)-based polyisocyanate supplied as a 75% solution in ethyl acetate.

It functions as a crosslinker and curing agent in two-component polyurethane systems, enabling controlled network formation across coatings, adhesives, and sealant formulations for industrial use.

In industrial and automotive coatings, it crosslinks hydroxyl-functional resins to deliver chemically resistant, durable topcoats suited for OEM and refinish applications across various sectors.

Flexible packaging adhesives rely on it to bond laminate structures where heat resistance and peel strength are critical performance requirements for the final product integrity.

In construction sealants and elastomers, it provides the cure density needed to meet movement accommodation and weathering demands in challenging environmental conditions.

Formulators working with wood coatings and plastic substrates also use it to achieve fast dry times and strong substrate adhesion in high-throughput production lines.

Desmodur L 75 is supplied as a liquid solution, standardized at 75% active isocyanate content in ethyl acetate. It is available in drum and IBC quantities for industrial procurement.

Technical-grade supply is the established market standard for this product. This ensures consistent performance and reliability for large-scale manufacturing and chemical processing applications.