| 摘要 |
PROBLEM TO BE SOLVED: To provide a use of a multicomponent in situ foaming system for hermetically sealing an opening part and/or a penetrating part in the wall and/or the ceiling of a building, composed of a foamed polyurethane and at least another polymer and to provide a method for hermetically sealing the opening part and/or the penetrating part in the wall and/or the ceiling of the building by using the multicomponent in situ foaming system. SOLUTION: The multicomponent in situ foaming system for producing the interpenetrating polymer network (IPN) comprises a polyisocyanate component (A) and a polyol component (B) for producing polyurethane, and components (C) and (D) for producing another polymer different from the above polyurethane, wherein these components (C) and (D) exist in a form separated in order to prevent reaction, namely in a form encapsulated in capsules. COPYRIGHT: (C)2006,JPO&NCIPI
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