Reactive two-component - poly urethane foaming characteristics if conventionally foamed with mass and a method for the flame-retardant sealing

摘要

Disclosed is a reactive two-component - poly urethane foaming characteristics if conventionally foamed with mass for the generation of heat - and flame-resistant foams with a polyol component (a), the at least one polyester alcohol, one or more catalysts for the reaction of the polyol with the polyisocyanate, at least one chemical blowing agent, at least one physical blowing agent and red phosphorus and contains a poly isocanat component (b), the at least one organic polyisocyanate with an average isocyanate - functionality of more than 2,2 and at least one physical blowing agent and a ratio of isocyanate groups of the polyisocyanate component (b) to oh - groups of the polyol component (a) 1,4 to 3,0 to 1, and free of solid intumescent materials, the volume increase upon heating, as well as a method for the flame-retardant sealing of openings and / or bushings in walls and / or ceilings of buildings with the use of these reactive two-component - poly urethane foaming characteristics if conventionally foamed with mass with the aid of a delivery device with mixing head, in which the two components to be mixed.