Foam material system or bag and application thereof

Abstract

The present invention relates to a foam material system and/or especially a foam material-package which contains at least one component (a prepolymer with its ends capped with alkoxyl silane) for generating a foam material, and comprises further one or a plurality of other components, with the conditions being that at least two separated reactants exist in at least two of the components mentioned above, wherein said reactants form a gas when being contacted mutually. If the foam material-package (abbreviated as 'package' below) or the foam material system are used according to preset purposes, a gas is formed, when the reactants contact, to generate foams thereby. The present invention relates also to applications of the components and the method, when the foam material system or the package are used.

Description

technical field The present invention relates to foam systems and / or kits suitable for use on the basis of alkoxysilane-terminated prepolymers, their use in the production of isocyanate-free foams and in the production of said foams and / or kits Application of gas generating agent. The described foam system and / or the bag and the application of the foam are for example suitable for the field of construction or other fields where the use of foam may be suitable, for example for filling cavities, for sealing or for thermal insulation, so that the present invention A corresponding method thereof is also related. Background technique Foamable mixtures based on prepolymer-containing polyurethanes are known which have a high concentration of isocyanate groups. The reaction to harden the spray foam can occur at room temperature by reaction with suitable reactants such as water and / or polyolefins. Foaming is induced by the propellant gas supplied to the spray box and / or by the ca...

AI Technical Summary

Problems solved by technology

The use of this propelling gas can lead to ecological problems, as demixing can occur due to the poor solubility of the alkoxysilane-terminated prepolymers or other components present, and adequate explosion protection measures must be taken. is under pressure, and since the propellant must absorb energy, there is constant cooling of the shot contents while spraying, which can lead to uneven foaming over time

Since the reaction has already taken place in the spray box, the water required for hardening (polymerization) can only be introduced via air humidity or via water from the substrate to be sprayed, which can only produce slow and possibly uneven hardening