LANXESS: Low Free Isocyanate Prepolymers for Adhesives and Sealants
LANXESS’ Adiprene LF technology reportedly creates prepolymers with < 0.1 wt% free MDI (methylene diphenyl diisocyanate) and other isocyanates such as TDI (toluene diisocyanate), HDI (hexamethylene diisocyanate), or pPDI (p-phenylene diisocyanate).
At the recent FEICA European Adhesive & Sealant Conference and Expo, LANXESS highlighted its latest developments in low free (LF) isocyanate urethane systems for adhesives, sealants, and one-component foams (OCF). The company’s Adiprene LF technology reportedly creates prepolymers with < 0.1 wt% free MDI (methylene diphenyl diisocyanate) and other isocyanates such as TDI (toluene diisocyanate), HDI (hexamethylene diisocyanate), or pPDI (p-phenylene diisocyanate), providing industrial hygiene standards, excellent performance, and improved processing. According to the company, these prepolymers are particularly suited to address increasingly strict regulatory requirements and provide for final products with lower hazard classifications.
LANXESS reports that its toolbox of Adiprene LF prepolymers is able to tailor the reactivity, viscosity, and polyol backbone of the prepolymer to adjust it to the needs of formulators. By controlling the chemical structure, these prepolymers reportedly have a very structured morphology to offer more consistent processing.