C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
C08L 75/04 (2006.01) C08J 9/32 (2006.01) C08L 63/00 (2006.01) C08L 83/04 (2006.01) C09K 3/10 (2006.01)
Patent
CA 2529233
A multicomponent, in situ foaming system is described for the preparation of interpenetrating polymeric networks (IPN) of foamed polyurethane and at least one further polymer for in situ construction purposes with a polyisocyanate component (A) and a polyol component (B) for forming the polyurethane, and further components (C) and (D) for forming the further polymer, components (A) and (B) being present in a reaction-inhibiting, separate form, characterized in that the components (A), (B), (C) and (D) are present in the form of one or two mixtures, in which the components (A), (B), (C) and/or (D) are contained separately in a micro-encapsulated form in order to inhibit reaction so that the components polymerized with formation of the interpenetrating polymeric network only when the components are brought into contact with one another after destruction or opening of the microcapsules, the use of this multicomponent in situ foaming system for sealing openings and/or bushings in walls and/or ceilings of buildings, and a method for sealing such openings and/or bushings using this multicomponent, in situ foaming system.
Leitner Michael
Schmitt Franz-Josef
Schnoeller Ute
Gierczak Eugene J. A.
Hilti - Aktiengesellschaft
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