Low-free prepolymers from Lanxess shown at ECS

摘要

Cologne, Germany - Lanxess showcased a number of low-free isocyanate prepolymers from its Adiprene LF and Trixene product lines at the European coating show. The company said that it produces its low-free prepolymers by inserting a vacuum distillation phase after the initial polymerisation of the polyol and the diisocy-anate. This stage removes the residual monomeric diisocyanate from the final polymer.