New sprayable Polyurethane System for the production of fire resistant articles and coatings

摘要

An increasing interest in fire resistant articles and coatings is expected due to a world wide growing awareness of fire safety, especially in building and construction applications. In order to meet these requirements, LANXESS, has now developed an innovative sprayable intumescent polyurethane system. This PU system is based on our known intumescent Bayfomox raw material system which has now been adapted to the spray process. Thus, it can be applied with a fast and economical technology without losing its excellent level of fire resistance. The general properties of the PU raw material system, as well as the intumescent mode of action are presented. Furthermore, the spray processing of the material and the necessary machinery set up are explained. Fire tests demonstrate the general fire resistance properties. These tests also show that the fire resistance was not influenced by the way the system was applied.