The EU has passed the regulation restricting the use of diisocyanates. Low Free (LF) isocyanate technology enables customers to comply with minimal effort and maximum quality.
LANXESS is the only manufacturer offering LF urethane prepolymers with levels of free isocyanate below 0.1% across a wide range of chemistries, including TDI, MDI, pPDI, and HDI, and are constantly working to broaden this offering even further.
Our range of PU prepolymers contain less than 0.1 wt% of residual isocyanate for improved industrial hygiene, and a controlled morphology which offers improved performance and higher productivity across PU elastomers, coatings, and adhesives.
Benefits of Low Free Technology
LANXESS is a leader in low free monomer prepolymer technology -- and prepolymer is the key. Instead of using just raw isocyanate and polyol with a curative to create an elastomer, using prepolymer provides the following benefits:
Unsurpassed Industrial Hygiene
Low Free prepolymers have low residual isocyanate content of less than 0.1 wt% for improved health and safety during handling and processing. These prepolymers protect workers from potential exposure to residual isocyanate, minimize EH&S workload, and offer reduced hazard classifications.
Low Free prepolymers have low residual isocyanate content of less than 0.1 wt% for improved health and safety during handling and processing. These prepolymers protect workers from potential exposure to residual isocyanate, minimize EH&S workload, and offer reduced hazard classifications.
Excellent Performance
Low Free prepolymers are chemically structured to provide superior performance, including excellent toughness, fatigue resistance, longer lifetimes when exposed to extreme conditions of temperature and chemicals, and low hysteretic heat build-up for dynamic applications. These prepolymers are used in the most extreme environments including oil and gas, wheels and tires, and mining, along with many other uses in construction, agriculture, automotive, electrical, office equipment and personal care.
Low Free prepolymers are chemically structured to provide superior performance, including excellent toughness, fatigue resistance, longer lifetimes when exposed to extreme conditions of temperature and chemicals, and low hysteretic heat build-up for dynamic applications. These prepolymers are used in the most extreme environments including oil and gas, wheels and tires, and mining, along with many other uses in construction, agriculture, automotive, electrical, office equipment and personal care.
Superior Processing & Productivity
Low Free prepolymers enable you to streamline your manufacturing processes. With the ability to achieve lower viscosity than conventional prepolymers, they enable the casting of very large and complex parts, can minimize the use of solvents in formulated coatings and adhesives, and may be specially formulated for processing at ambient temperature. These prepolymers offer lower viscosity, longer pot life and faster demolding with a range of curatives and catalysts to enable very high productivity.
Low Free prepolymers enable you to streamline your manufacturing processes. With the ability to achieve lower viscosity than conventional prepolymers, they enable the casting of very large and complex parts, can minimize the use of solvents in formulated coatings and adhesives, and may be specially formulated for processing at ambient temperature. These prepolymers offer lower viscosity, longer pot life and faster demolding with a range of curatives and catalysts to enable very high productivity.
