| 摘要 |
<p>Multicomponent-in situ system (I), for the preparation of interpenetrating polymer network (IPN), comprises a polyisocyanate component (A) and a polyol component (B) for forming polyurethane and further component (C) and (D) for forming further polymer, where the components (A-D) are present e.g. in microencapsulated form and their polymerization is carried out after subjecting (A-D) to destruction and/or opening of the microcapsules. Multicomponent-in situ system (I), for the preparation of interpenetrating polymer network (IPN) from foamed polyurethane and at least one further polymer for local forming purposes, comprises a polyisocyanate component (A) and a polyol component (B) for forming polyurethane and further component (C) and (D) for forming further polymer, where the components (A-D) are present: separately in reaction inhibiting form, in the form of one or two mixtures or in microencapsulated form, where the polymerization of (A-D), for forming IPN, is carried out after subjecting (A-D) to destruction and/or opening of the microcapsules. An independent claim is also included for a method for sealing cracks and/or applying in walls or covering buildings comprises providing (I) in the crack, forming an interpenetrating polymer network from the foamed polyurethane and at least one further polymer foam and hardening.</p> |
