LANXESS has presented innovative material developments at this year’s Polyurethane Manufacturers Association (PMA) annual meeting.
They presented two new prepolymers of the Adiprene range that are produced using low free (LF) technology so they contain very low diisocyanate content.
Ian Laskowitz, Applications Development Manager for Urethane Systems at LANXESS, will highlight at the PMA Meeting the novel Adiprene LF TR400 high-temperature prepolymer, which is based on polycarbonate.
This low-free TDI prepolymer is cured with MCDEA (4,4′-methylenebis(3-chloro-2,6-diethyl-aniline) It is much easier to process than comparable prepolymer systems for high-temperature applications.
Laskowitz’s presentation will expand on the use of physical property testing at high temperature, comparing this new prepolymer to standard cast urethane materials, as well as high-temperature physical property retention after heat aging at high application temperatures. The processing needs of the materials will also be discussed.
LANXESS developed a unique 1K blocked prepolymer, Adiprene K LFM E820, based on caprolactam (CAP) blocked prepolymer and diamine curatives. This was the focus of the presentation given by Senior Chemist George Brereton at the PMA annual meeting.
The variety of possible applications of blocked LF prepolymers ranges from small thicknesses of 1-2 mm to really large parts up to several tons. For example, these systems are used as abrasive pad binders or coatings of industrial rollers, as well as in the impregnation of industrial belts. Another advantage for the processor is the elimination of the need for a mixing and metering system, which pays off in terms of component costs.
Potential applications include dynamic bend stiffeners for thick cables such as submarine cables, industrial rolls, components for wind turbine rotor blades or large composite structures.
The LANXESS Urethane Systems business unit is one of the world’s leading suppliers of polyurethane systems for elastomers, coatings, adhesives and sealants with a special focus on solvent-free and monomer-free systems, and provides its customers decades of urethane chemistry know-how, comprehensive application expertise, and deep manufacturing experience.