Two component local foaming system and its use for filling cavities for the purpose of fire-protection

摘要

a two-component ortschaumsystem are described for the production of a intumeszierenden brandchutzschaums with a density of less than 200 kg / m3 and high fire resistance, with a polyol component (a), at least a polyol, a catalyst for the reaction of the polyols with the polyisocyanat,water or a foaming agent on the basis of a compressed or liquefied gas as schaumbildner and at least a intumeszierendes material on the basis of a su00e4urebildners, a carbon producing compound and a gasbildners and contains a polyisocyanat - component e (b), at least one polyisocyanat is characterised by the.the polyol component (a) at least one polyesterpolyol, at least a aminopolyol, at least a halogenhaltiges polyol, at least one blu00e4hgraphit acidifying gases, and at least one aschekrustenstabilisator.contains, with the proportions of the polyols and polyisocyanat (s) are tuned to the intended to mix the polyol component (a) with the component (b) polyisocyanat molverhu00e4ltnis of isocyanatgruppen of polyisocyanats to oh groups of the polyols (nco: oh - v erhu00e4ltnis) of greater than 1: 1, and the use of the ausschu00e4umen openingscable and rohrdurchfu00fchrungen in walls, floors and ceilings of buildings and / or for the purpose of fire protection.